cartevoirUser guide · Layer reference

Layer reference

The map's catalogue holds 113 layers in 13 categories; 6 of them show only live data and have nothing to show in the past. This list describes each layer. It is not a status board: a layer being listed does not mean its feed is running at this moment. On the map, each layer's row shows its live state.

aviation · 4

FAA delays: US airport ground stops, closures and delay programs.; Source: FAA · Updates: 2 min · Resolution: airport · Confidence: reported (issued by an agency or publisher)
Rocket launches: Every announced orbital and suborbital launch worldwide, at the pad it will fly from, from The Space Devs' Launch Library. THE DATE IS THE THING TO READ CAREFULLY: the API returns a full ISO timestamp for every launch and publishes its own precision beside it, and those are wildly different claims. Sampled 2026-08-30, of 100 upcoming launches only 4 carried second-level precision and 7 minute-level, while 47 were …; Source: The Space Devs, Launch Library 2 · Updates: cached every 30 minutes · Resolution: launch pad · Confidence: reported (issued by an agency or publisher) · off by default
Satellites (live orbits): 281 satellites across five chosen groups — crewed stations, the GPS constellation, the GOES imagers this console renders from, weather orbiters, and the ~150 brightest objects. EVERY POSITION IS A PREDICTION: SGP4 propagation of CelesTrak orbit models, computed in the browser each two seconds. Accuracy degrades with orbit-model age (~1 km/day in low orbit), so each satellite carries its epoch age and models older …; Source: CelesTrak TLEs, propagated client-side (satellite.js SGP4) · Updates: TLEs ~daily upstream, refetched every 3 h; positions re-propagated every 2 s · Resolution: sub-satellite point · Confidence: modelled · off by default
SIGMETs: Hazardous aviation weather advisories.; Source: NOAA AWC / FIR MWOs · Updates: advisory · Resolution: polygon · Confidence: reported (issued by an agency or publisher)

derived · 4

Affected assets: YOUR OWN ASSETS THAT SOMETHING IS CURRENTLY INTERSECTING — the output of the intersection engine, on the map instead of only in the rail. A halo marks the asset, a dashed connector runs to the hazard, and both are coloured by the hazard's own severity so this introduces no new palette. THE CONNECTOR IS A RELATIONSHIP AND NOT A PATH: it asserts that these two things intersect and nothing travels along it, which is …; Source: Cartevoir intersection engine over your assets and the live hazard feeds · Updates: recomputed as the feeds move · Resolution: asset position, or its centroid where it is an area · Confidence: derived (computed by Cartevoir)
Current-event priority: Transparent Hazard × Exposure × Vulnerability score using current GDACS events and dated national indicators.; Source: Stormglass / GDACS / World Bank / UNHCR · Updates: event + annual inputs · Resolution: country · Confidence: derived (computed by Cartevoir) · off by default
Flood exposure scenario: Transparent county-level scenario index.; Source: Stormglass / Census · Updates: with outlook · Resolution: US county · Confidence: derived (computed by Cartevoir) · off by default
Scenario storm: A what-if you drew: a track, a corridor width and a forward speed, swept along the time scrubber. Every number that comes out of it — the corridor, the population inside it, the assets it crosses — follows from assumptions YOU made, not from a model run and not from an observation. It carries the SCEN epistemic state for exactly that reason, and it is deliberately styled so it can never be mistaken for feed truth.…; Source: Operator-authored · Updates: on edit · Resolution: corridor polygon · Confidence: derived (computed by Cartevoir) · off by default

economy · 8

Chinese development finance: 20,985 Chinese official development-finance projects committed 2000–2021, from AidData's Global Chinese Development Finance Dataset v3. ONLY 9,404 CARRY COORDINATES AND ONLY THOSE ARE DRAWN; the other 11,581 are real projects with no published location, counted per country in the panel so a country with 3 mapped and 60 unmapped projects does not read as barely touched. Nothing is geocoded from a project name. AMOU…; Source: AidData GCDF v3 (cite AidData); Geo-GCDF geometry ODC-By with ODbL parts; GreenFDC/Nedopil 2025 MoU list · Updates: static through the 2021 commitment year · Resolution: project point — 6,464 exact, 2,340 city-level, 600 within ~5 km · Confidence: reported (issued by an agency or publisher) · off by default
Exchanges & central banks: Stock exchanges and central banks at their registered addresses, from Wikidata under CC0 — 121 institutions across 86 countries, counted 2026-08-30. COVERAGE IS WIKIDATA'S, thorough for major markets and patchy below them: a country with no marker has an exchange or a central bank nobody has given coordinates to, never an absence of one. Positions are the institution's registered address, which for a modern exchan…; Source: Wikidata (CC0) · Updates: cached weekly · Resolution: registered address · Confidence: reported (issued by an agency or publisher) · off by default
Fuel supply tightness: Weekly EIA ending stocks for gasoline, distillate, jet fuel and crude (excl. SPR) per petroleum district (PADD), colored by distance from that district's OWN five-year same-week average — the WPSR's framing, never a national threshold. Retail gasoline and diesel prices ride along per district. Stocks are regional inventory, not station availability. Published weekly: stocks run ~7 days behind, prices ~4; every pan…; Source: EIA Weekly Petroleum Status Report · Updates: weekly (Wed stocks, Mon prices) · Resolution: PADD (5 districts, drawn as member states) · Confidence: observed · off by default
Listed companies: Constituents of 22 major stock indices, drawn at their registered headquarters and coloured by industry. MEMBERSHIP IS THE FACT THIS LAYER ASSERTS — a company either is in the S&P 500 or it is not — and that is deliberate: Wikidata's market-capitalisation values are dated user-maintained snapshots, and the naive query returns Saudi Aramco at $24.6 TRILLION, wrong by more than tenfold. Only 160 of 1,481 constituent…; Source: Wikidata (CC0) — index membership, headquarters, industry · Updates: daily pull; membership changes quarterly · Resolution: headquarters point · Confidence: reported (issued by an agency or publisher) · off by default
Multinationals: Locations of major global brands in the current view, from OpenStreetMap joined on brand:wikidata — the same identifier tags a brand on every continent (verified across Manhattan and London samples). A curated catalogue of genuinely multinational chains across food, retail, fuel, banking, logistics, technology and hospitality; local chains and bike-share docks are deliberately out of scope. COVERAGE COUNTS, NOT ST…; Source: OpenStreetMap (Overpass) · Updates: viewport query · Resolution: site point · Confidence: reported (issued by an agency or publisher) · off by default
Startups: Two provenances, both stated on every card. THE ROSTER: 2,850 owner-curated companies at headquarters cities — 2,497 from named VC portfolios and YC batches, 353 added 2026-09-06 from Wikidata for AI, space and Web3 — editorial by design, a company is here because it is tracked. THE RESEARCH EXTENSION (2026-09-15): 10,162 more companies from the Intellivoir company-research release of 2026-09-08 (YC, Techstars, 50…; Source: Owner-curated roster (compiled by local agent, 2026-09-02) + Wikidata CC0 (2026-09-06) + Intellivoir company-research release 2026-09-08 (GeoNames CC BY 4.0 city points) · Updates: on rebuild · Resolution: headquarters city · Confidence: reported (issued by an agency or publisher) · off by default
US bilateral trade: Annual goods trade by partner country.; Source: UN Comtrade · Updates: annual · Resolution: country · Confidence: reported (issued by an agency or publisher) · off by default
US election results: Certified US returns 2016-2024 — president, senate, house and governor — drawn by winner at county, congressional-district or state level. Aggregated from MEDSL's 52,384,370-row precinct master, which stays out of this repository; what ships is the reduction, 234,110 county rows across 3,147 counties. A UNIT WITH NO ROW IS NOT REPORTED, NEVER ZERO, and this is the layer where that distinction does the most work: a…; Source: MEDSL precinct returns; US Census TIGER cartographic boundaries · Updates: static through the 2024 cycle · Resolution: county / congressional district / state · Confidence: reported (issued by an agency or publisher) · off by default

environment · 22

3D terrain: Renders the same static ~2017 elevation model as true 3D relief at 1.35x vertical exaggeration, with a dusk sky. An exaggerated display of real measurements: heights read qualitatively, not for line-of-sight or flood-depth work. Enabling it tilts the camera — flat-on, 3D relief is invisible.; Source: Mapzen / AWS Open Data terrain tiles · Updates: static (~2017 compilation) · Resolution: raster DEM, ~10-90 m by region · Confidence: observed · off by default
Air quality: Two ground networks on one row, drawn as two fleets. FILLED dots are EPA AirNow hourly surface observations for the US, Canada and Mexico — 2,021 monitors at probe time, coloured by each site's worst per-pollutant AQI (ozone, PM2.5, PM10, NO2), published ~2 hours behind the observation hour. RINGED dots are OpenAQ's global network — 8,422 stations reporting worldwide in the last six hours, carrying PM2.5 as a raw …; Source: EPA AirNow (files.airnowtech.org, keyless mirror) + OpenAQ v3 · Updates: hourly (AirNow, ~2 h lag); 15-min snapshot (OpenAQ) · Resolution: monitor point · Confidence: observed · off by default
Aurora forecast: Probability of visible aurora from the NOAA OVATION model. A forecast, not an observation: the grid describes a moment about an hour after the solar-wind measurements that drive it, and both times are shown. Operationally this is the HF-radio degradation map for polar flights.; Source: NOAA SWPC (OVATION) · Updates: ~5 minutes · Resolution: 1 degree grid · Confidence: modelled · off by default
Caves & karst access: Mapped named cave entrances and cave access points with source popups.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: entrance point · Confidence: reported (issued by an agency or publisher) · off by default
Climate zones (Köppen-Geiger): All 30 Köppen-Geiger climate classes for 1991–2020, in Beck et al.'s own published palette, with the full key in the rail. A CLIMATOLOGY, not weather: it says what the climate has been over three decades, not what today looks like — the live layers above it carry today.; Source: Beck et al. (2023), Scientific Data 10, 724 — CC-BY 4.0 · Updates: static 1991–2020 climatology · Resolution: 0.1° · Confidence: reported (issued by an agency or publisher) · off by default
Coral bleaching stress: NOAA Coral Reef Watch 5 km Bleaching Alert Area — the worst thermal-stress alert at each point over the last 7 days, on CRW's five-level scale. Colored water is heat stress everywhere; it matters where reefs are. Shown for the reef belt (±40°), reprojected properly rather than smeared (equirect source, mercator map). Updated ~daily, about a day behind.; Source: NOAA Coral Reef Watch · Updates: ~daily (7-day max composite) · Resolution: 5 km · Confidence: derived (computed by Cartevoir) · off by default
Deforestation (tree cover loss): Cumulative global tree cover loss 2001–present at ~30 m, from the Hansen/UMD Landsat analysis via Global Forest Watch (CC-BY 4.0). Pink marks where tree cover was LOST at any point since 2001 — a two-decade scar map, not a live alert; recent loss and 2001 loss look the same here. Loss ≠ deforestation in the legal sense (fires, harvest rotation, and storms also register).; Source: Hansen/UMD/Google/USGS/NASA via Global Forest Watch · Updates: annual dataset · Resolution: ~30 m · Confidence: derived (computed by Cartevoir) · off by default
Drought (USDM): Weekly U.S. Drought Monitor classes D0-D4, drawn by a rotating human analyst — reported judgment, not a model or live observation. Classes are nested (D4 area is also inside D0-D3), so area figures read as '% in this class or worse'. The polygons carry no date; the valid week is joined from the USDM statistics service and shown, and the layer flags itself once a map is over 10 days old. Boundaries are simplified ~…; Source: U.S. Drought Monitor — NDMC / USDA / NOAA · Updates: weekly (released Thursdays) · Resolution: analyst-drawn national polygons · Confidence: reported (issued by an agency or publisher) · off by default
Endangered species: GBIF occurrence records for IUCN critically-endangered, endangered and vulnerable species in the current view. Each dot is a RECORD OF AN OBSERVATION — frequently a museum specimen or an old survey — never a live sighting, a population, or a range map. Blank areas mean nobody recorded and published there; recording follows naturalists, not species. Publishers generalize coordinates for poaching-sensitive species, …; Source: GBIF · Updates: viewport query · Resolution: record point · Confidence: reported (issued by an agency or publisher) · off by default
Ground photos: Geotagged public photographs within 10 km of the view centre. Shows what a place looks like from the ground; says nothing about now — capture dates range from recent to decades old and travel with every image.; Source: Wikimedia Commons · Updates: on pan (cached 10 min) · Resolution: camera position, contributor-supplied · Confidence: reported (issued by an agency or publisher) · off by default
Land cover: Annual IGBP land-cover classification; categorical context, not current land-use change.; Source: NASA GIBS / MODIS · Updates: annual · Resolution: satellite raster · Confidence: modelled · off by default
National Park System: All 474 units of the US National Park System, with official boundaries from NPS's Land Resources Division joined to NPS's own descriptions, designations, states and links. ONLY 59 OF THE 474 ARE NATIONAL PARKS: the rest are monuments, historic sites, seashores, battlefields, parkways and preserves, and the layer carries each unit's real designation rather than flattening them — a reader who filters for national pa…; Source: National Park Service — Land Resources Division boundaries + NPS Data API · Updates: boundaries on legislative change; descriptions daily · Resolution: unit boundary polygon · Confidence: reported (issued by an agency or publisher) · off by default
Park webcams (NPS): 233 active National Park Service webcams, mapped to where they look from. The thumbnails NPS publishes alongside these are PROMOTIONAL PHOTOGRAPHS, not live frames — one measured 18 months old and byte-identical across fetches — so this layer places the cameras and links to the NPS page carrying the actual live view rather than showing a still that would read as current. 46 further cameras are published as inactiv…; Source: National Park Service · Updates: camera locations change over months; the views themselves are live at nps.gov · Resolution: camera position · Confidence: reported (issued by an agency or publisher) · off by default
Sea surface temperature: GHRSST MUR L4 sea-surface-temperature analysis. A daily blended analysis shown at a 2-day lag for availability — yesterday's map is published but 404s through the early UTC morning, and a layer that vanishes on schedule is worse than one honestly two days old. Health of the tiles themselves is not observable from the console.; Source: NASA GIBS / GHRSST MUR L4 · Updates: daily analysis, shown at 2-day lag · Resolution: ~1 km analysis raster · Confidence: modelled · off by default
Snow cover (NDSI): VIIRS normalized-difference snow index, shown at a 2-day lag for availability. A daytime optical retrieval: clouds, polar night and swath gaps leave real holes, so a blank pixel is unobserved, not snow-free.; Source: NASA GIBS / VIIRS NOAA-20 · Updates: daily, shown at 2-day lag · Resolution: satellite raster · Confidence: observed · off by default
Surface air temperature: Latest published daily daytime surface-air temperature retrieval; not a forecast or heat-index product.; Source: NASA GIBS / AIRS · Updates: daily with latency · Resolution: satellite raster · Confidence: observed · off by default
Tectonic plates: All 52 plates of Peter Bird's PB2002 model, labeled, with their 241 boundary segments — subduction zones drawn distinctly. A REFERENCE layer, not a hazard product: it says where the plates are, not where they will next slip; earthquakes are the live layer beside it.; Source: Peter Bird, PB2002 (2003) — GeoJSON by Hugo Ahlenius / Nordpil, ODC-BY 1.0 · Updates: static model, 2003 edition · Resolution: plate boundary line · Confidence: reported (issued by an agency or publisher) · off by default
Terrain relief: Subtle hillshade computed from the Mapzen terrarium elevation tiles (SRTM, NED, ETOPO1 and friends merged). The elevation model is STATIC, compiled around 2017 — it shows the shape of the land, not any current condition, and recent volcanic, mining or construction changes are absent.; Source: Mapzen / AWS Open Data terrain tiles · Updates: static (~2017 compilation) · Resolution: raster DEM, ~10-90 m by region · Confidence: observed
Transboundary aquifers: 2025 global transboundary aquifer boundaries.; Source: IGRAC / UNESCO-IHP · Updates: 2025 edition · Resolution: aquifer polygon · Confidence: reported (issued by an agency or publisher) · off by default
Vegetation health (NDVI): Latest published 8-day normalized difference vegetation index composite.; Source: NASA GIBS / VIIRS NOAA-20 · Updates: 8-day composite · Resolution: satellite raster · Confidence: observed · off by default
World marine protected areas: Marine and coastal protected areas worldwide from UNEP-WCMC's WDPA — 314,378 polygons counted 2026-08-28, which is why this is viewport-scoped and capped at 400 per view rather than fetched whole. Includes marine reserves, coastal parks and no-take zones; the no-take flag and reported marine area travel with each record. Coverage is what governments have reported to WDPA, so an unmarked stretch of sea means unrepo…; Source: UNEP-WCMC / IUCN, World Database on Protected Areas · Updates: monthly WDPA release · Resolution: site polygon · Confidence: reported (issued by an agency or publisher) · off by default
World national parks: National parks worldwide from UNEP-WCMC's World Database on Protected Areas — 2,882 sites counted 2026-08-28, filtered on the English designation 'National Park'. That is a legal DESIGNATION, not an IUCN category: widening to IUCN II would sweep in reserves that do not call themselves national parks, so the narrower checkable filter is used. Each polygon carries its IUCN category, reported area, designation year, …; Source: UNEP-WCMC / IUCN, World Database on Protected Areas · Updates: monthly WDPA release · Resolution: site polygon · Confidence: reported (issued by an agency or publisher) · off by default

hazards · 18

Areas of interest: Standing watches over places worth looking at — chokepoints, lines of contact, and the land crossings an exodus would use — plus any area you draw yourself. Each opens a panel of what EVIDENCE EXISTS there right now: Sentinel-1 SAR and Sentinel-2 optical scene recency from the Copernicus catalogue, open activity the workspace has already loaded, and links to the analysts who assess these places openly. It reports …; Source: Cartevoir editorial set + Copernicus CDSE STAC · Updates: on open · Resolution: bounding box · Confidence: derived (computed by Cartevoir) · off by default
Aviation accidents (YTD): NTSB aviation accidents and incidents this year, extracted from NTSB's published database. Positions are added as an investigation proceeds, so recent events are the LEAST likely to have one — measured at extract time, 638 of 864 events this year could be placed, and the missing quarter is weighted towards the most recent weeks. NTSB also records foreign events where a US operator, manufacturer or registration is …; Source: NTSB Aviation Accident Database (offline extract) · Updates: monthly, and only when the extract script is re-run · Resolution: accident site · Confidence: reported (issued by an agency or publisher) · off by default
Disaster response (CEMS): Copernicus Emergency Management Service rapid-mapping activations: a government has formally requested EU satellite mapping of a disaster. A REPORTED signal that response is underway at a place, not a hazard footprint. Ended activations older than 30 days are dropped, per the currency discipline that keeps GDACS honest.; Source: Copernicus CEMS · Updates: event · Resolution: activation centroid · Confidence: reported (issued by an agency or publisher) · off by default
Earthquakes: M2.5+ events in the last day.; Source: USGS · Updates: minutes · Resolution: event point · Confidence: observed
Fatal road crashes (YTD): Every road crash with a fatality this year in New York, Chicago and Austin. THREE CITIES, NOT A COUNTRY: there is no usable national feed (NHTSA's CrashAPI refuses this egress and NTSB's query API is internal), so an empty map elsewhere means nobody here publishes that area, not that nobody died there. The cities also publish at different speeds, so their totals cover different amounts of the year.; Source: NYC, Chicago and Austin open-data portals · Updates: daily at best; per-city lag runs weeks to months · Resolution: crash point · Confidence: reported (issued by an agency or publisher) · off by default
Fire cameras: Live fire-detection cameras on California ridgelines and towers. Each still is a real observation with its own timestamp, so cameras age from OBS to STALE like any other contact. Many pan continuously — a frame shows one bearing at one moment.; Source: ALERTCalifornia (UC San Diego / CAL FIRE) · Updates: frames every ~1-2 minutes · Resolution: camera position · Confidence: observed · off by default
Fire weather (global): Global fire-weather danger from the Copernicus/JRC GWIS service (NASA GPM Fire Weather Index). A MODELED field — the meteorological potential for fire spread, not observed fire; it says nothing about whether anything is burning. Complements the US-only NIFC wildfire layer with worldwide coverage.; Source: Copernicus GWIS / JRC (NASA GPM FWI) · Updates: daily · Resolution: ~0.25° raster · Confidence: modelled · off by default
Flood outlook: Rainfall outlooks, flood zones and forecast gauges.; Source: NOAA WPC / FEMA · Updates: daily to minutes · Resolution: mixed · Confidence: modelled
Global disasters: Worldwide disaster alerts and footprints.; Source: GDACS · Updates: event · Resolution: event / polygon · Confidence: reported (issued by an agency or publisher)
Hail guidance: Next-hour severe-hail GUIDANCE from ProbHail and radar-estimated MESH, screened at 10% probability or 0.75 inch MESH, with current SPC ground hail reports drawn as a separate reported symbol. This is not a verified hail event. A core drawn with a solid heavy edge has at least one ground report within 15 km and 2 h of its valid time; every other pairing is left unmade. MESH is an estimate, not a measured stone and …; Source: NOAA/CIMSS ProbSevere v3 / NOAA SPC · Updates: ~2 min guidance / ~10 min reports · Resolution: storm-object polygon / report point · Confidence: modelled · off by default
HF radio blackout (D-RAP): Live HF radio absorption worldwide, from NOAA SWPC's D-Region Absorption Prediction — the operational answer to "is the Sun breaking radio right now". A solar flare's X-rays ionise the D-region over the sunlit hemisphere and HF traffic is absorbed instead of reflected; each 4°×2° cell carries the HIGHEST AFFECTED FREQUENCY there, and a transmitter below it is degraded or gone. QUIET DRAWS NOTHING, DELIBERATELY: me…; Source: NOAA SWPC D-RAP (US Government, public domain) · Updates: cached 5 minutes; product regenerates continuously · Resolution: 4°×2° grid cells · Confidence: modelled · off by default
Official warnings (world): Every active weather and hazard warning issued by a national meteorological or hydrological service outside the United States, as aggregated by the WMO Severe Weather Information Centre from the members' own CAP feeds — 1,481 warnings when first read on 2026-09-05, from 80-plus issuers. Where the CAP carries a polygon or circle the footprint is drawn in the issuer's severity; where it carries only a place code (In…; Source: WMO SWIC (members' CAP feeds); issuer named per warning. Europe: MeteoAlarm, CC BY 4.0, exact polygons · Updates: 5 minutes · Resolution: CAP polygon, or issuer centroid (hollow) · Confidence: reported (issued by an agency or publisher) · off by default
River flood alerts (GloFAS): Copernicus GloFAS reporting points where the ensemble forecast exceeds the 2-year (Medium, yellow) and 5-year (High, red) return-period discharge, for the latest 00 UTC run, drawn as the service's own WMS raster. The Severe (20-year) layer is not drawn: the service answers it with an error tile on every date tried. A MODEL, worldwide, at 0.05°: it says where a river is forecast to run unusually high, not where wat…; Source: Copernicus GloFAS WMS (ows.globalfloods.eu) · Updates: daily run, tiles live · Resolution: 0.05° reporting points · Confidence: modelled · off by default
Severe weather: SPC outlooks and ProbSevere guidance.; Source: NOAA SPC / CIMSS · Updates: minutes · Resolution: storm object / polygon · Confidence: modelled
Storm reports: Tornado, wind and hail reports for the current 12Z convective day — what was actually reported on the ground, against which the ProbSevere forecast can be read. Observed REPORTING, not observed weather: density follows population, so an unreported area is not a quiet one.; Source: NOAA Storm Prediction Center · Updates: ~10 minutes · Resolution: report point · Confidence: observed · off by default
Tropical systems: NHC tracks, cones and outlooks.; Source: NOAA / NHC · Updates: advisory · Resolution: track / polygon · Confidence: modelled
Volcanic alerts: US volcanoes currently ABOVE normal background, carrying the ICAO aviation colour code that volcanic-ash SIGMETs respond to. A volcano at GREEN/NORMAL is absent from the feed entirely, so the count is not a census.; Source: USGS Volcano Hazards Program · Updates: on notice · Resolution: volcano point · Confidence: reported (issued by an agency or publisher) · off by default
Wildfire: Incidents, perimeters, thermal detections, smoke and fire weather.; Source: NIFC / NASA / NOAA · Updates: minutes to daily · Resolution: mixed · Confidence: reported (issued by an agency or publisher)

health humanitarian · 2

Food deserts (US): USDA Food Access Research Atlas 2025: census tracts that are both LOW-INCOME and LOW-ACCESS — over 1 mile (urban) or 10 miles (rural) by driving distance from a supermarket. A tract-level classification, not a store map: a shaded tract is a statistical designation about the tract as a whole, and unshaded means it failed one of the two tests, not that groceries are close. US only.; Source: USDA ERS Food Access Research Atlas · Updates: periodic (2025 edition) · Resolution: census tract · Confidence: derived (computed by Cartevoir) · off by default
Hospitals & clinics: Hospitals and clinics from OpenStreetMap, drawn in the current viewport via the shared Overpass query. Coverage is OSM coverage: strong in well-mapped regions, thin where mappers are few — an empty area means unmapped, not care-free. Click a site for its operator and OSM record.; Source: OpenStreetMap (Overpass) · Updates: viewport query · Resolution: facility point/area · Confidence: reported (issued by an agency or publisher) · off by default

infrastructure · 18

Critical infrastructure: Viewport-scoped airports, rail, border, power, hospital, pipeline, data-center, mine and logistics features.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: OSM feature / representative point · Confidence: reported (issued by an agency or publisher) · off by default
Critical minerals: 7,433 mines, deposits, processing plants, smelters, refineries and brine operations carrying at least one of ten critical commodities — lithium, cobalt, nickel, rare earths, copper, graphite, manganese, uranium, gallium, germanium — cut from a 143,319-row open master. IT IS US-DENSE, NOT GLOBAL: 4,020 sites (54%) are in the United States because the backbone is USGS MRDS, a US survey; Canada (NRCan) and Australia …; Source: USGS MRDS / PP 1802 / critical mineral deposits v2 (public domain) · Geoscience Australia 2025 (CC BY 4.0) · Natural Resources Canada (OGL-Canada) · Wikidata (CC0); compiled 2026-09-01 · Updates: static compilation; rebuilt on demand · Resolution: site point — 6,538 site, 840 approximate, 55 regional · Confidence: reported (issued by an agency or publisher) · off by default
Data centers: TWO PROVENANCES, DRAWN DISTINCTLY AND NEVER BLENDED. Indigo squares are PeeringDB — the interconnection industry's own registry, ~5,200 placed facilities sized by how many networks are actually present (an Equinix hub and a single-tenant server room are not the same object). Amber squares are hyperscale and AI campuses from a compiled research master (owner-supplied, 2026-09-01), sized by REPORTED capacity in MW —…; Source: PeeringDB + compiled master (mixed: OSM, operator pages, Wikidata, Epoch AI) · Updates: PeeringDB cached 12 h; master is a committed compilation · Resolution: facility point · Confidence: reported (issued by an agency or publisher) · off by default
Local agendas (data centres): ONE MARK PER WATCHED LOCAL GOVERNMENT, IN FOUR STATES THAT ARE NEVER BLENDED. Intellivoir's policy service watches the council and planning agendas of 971 US cities and counties (the top-800 Census places, the 150 largest counties and the data-centre corridors; 2026-09-06) for the moment a data-centre item is posted on an UPCOMING meeting. Filled amber, sized by count: a SITING-class item (rezoning, a named projec…; Source: AI Policy Signals agenda watch (Legistar, PrimeGov, CivicPlus, Granicus, IQM2, OnBase, CivicWeb, Municode, eScribe, CivicClerk and plain pages) · US Census 2024 cartographic boundaries for placement · Updates: watch runs 06:00 and 18:00 UTC; map reads it every 5 minutes · Resolution: government (county, incorporated place or township) centroid · Confidence: reported (issued by an agency or publisher) · off by default
Major construction: Mapped construction projects and transport works in the current viewport.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: OSM feature · Confidence: reported (issued by an agency or publisher) · off by default
Mines, fields & rigs: Mapped mines, quarries, petroleum wells, named oil fields and offshore platforms.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: OSM feature · Confidence: reported (issued by an agency or publisher) · off by default
Offshore platforms: Offshore oil and gas platforms worldwide from OpenStreetMap — 4,093 structures counted 2026-08-28. COVERAGE IS VERY UNEVEN and that is a mapping fact, not an industry one: the North Sea is richly attributed (of 183 sampled, 120 named, 69 with an operator, 145 categorised by seamark type), while the Gulf of Mexico is almost entirely unnamed points with no operator or product. A blank stretch of sea means nobody has…; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication, cached daily · Resolution: structure point · Confidence: reported (issued by an agency or publisher) · off by default
Oil & shale plays: EIA's tight-oil and shale-gas play boundaries for the Lower 48 — 50 plays including the Permian family (Spraberry, Wolfcamp, Wolfcamp-Midland, Bone Spring), the Bakken, Eagle Ford, Marcellus and Utica. Each carries its stratigraphic age and lithology, so the layer doubles as a coarse geologic overlay: colour is the geologic era the source rock belongs to. A PLAY IS A GEOLOGIC EXTENT — where the formation is, at th…; Source: US Energy Information Administration, Tight Oil and Shale Gas Plays (Lower 48) · Updates: revised when EIA republishes a play map · Resolution: play boundary polygon · Confidence: reported (issued by an agency or publisher) · off by default
Petroleum storage: Oil, refined-product and gas storage tanks from OpenStreetMap, coloured by what each is tagged as holding. THIS IS COUNT AND POSITION, NOT CAPACITY, and the distinction is the whole caveat: probed over the Fujairah tank farms 2026-08-30, 332 of 332 petroleum tanks carry a height tag and NOT ONE carries a capacity or volume. So the layer shows where storage stands and how much of it there is by tank count; it canno…; Source: OpenStreetMap / Overpass (ODbL) · Updates: viewport query, cached hourly · Resolution: individual tank · Confidence: reported (issued by an agency or publisher) · off by default
Power generation & grid: Mapped generation plants, substations and transmission lines; direction of electricity flow is generally unavailable.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: OSM feature · Confidence: reported (issued by an agency or publisher) · off by default
Power grid & interchange (US): The 85 US balancing authorities as territories, coloured by which synchronous interconnection they belong to — Eastern, Western, Texas (ERCOT) or Québec — plus the power actually flowing between them in the most recent settlement hour EIA has published. Lines are drawn between authority centroids, not along transmission corridors: this shows WHO is exchanging power with whom and how much, never the physical path i…; Source: EIA-930 hourly interchange + balancing-authority boundary polygons · Updates: hourly, ~1 h publication lag · Resolution: balancing-authority territory · Confidence: reported (issued by an agency or publisher) · off by default
Power plants & nuclear: Global generating capacity from the World Resources Institute's Global Power Plant Database — 34,936 stations in 160+ countries, each with a primary fuel and a declared nameplate capacity. Nuclear stations (195 worldwide) are coloured distinctly because that is the class most readers are scanning for. CAPACITY IS NAMEPLATE: what the plant could produce at full output, never what it is producing now — this layer sa…; Source: WRI Global Power Plant Database v1.3 (CC BY 4.0), via Esri · Updates: annual database revision · Resolution: station point · Confidence: reported (issued by an agency or publisher) · off by default
River gauges: Observed and forecast river stages.; Source: NOAA NWPS · Updates: minutes · Resolution: station · Confidence: observed
Road & rail infrastructure: Viewport-scoped primary roads, railway corridors, stations and yards.; Source: OpenStreetMap / Overpass · Updates: OpenStreetMap replication · Resolution: OSM feature · Confidence: reported (issued by an agency or publisher) · off by default
Road route: A driving route between two points you click, drawn from a real road network — and then intersected against every live hazard the console is holding, because the route is handed to the same asset-intersection engine that watches imported assets. That is the question this layer exists for: not where the road goes, but what is on it. Distance and drive time come from the routing engine and assume ordinary conditions…; Source: OpenRouteService (keyed) or OSRM demo server; road network from OpenStreetMap · Updates: on demand · Resolution: road segment · Confidence: modelled · off by default
Submarine cables & pipelines: Seabed telecommunications cables, power interconnectors and pipelines from OpenStreetMap, coloured by what they carry. COVERAGE IS THE THING TO UNDERSTAND HERE, and it is very uneven: of 7,266 submarine ways worldwide counted 2026-08-30, 77% carry a Finnish Transport Agency import id and 86% lie in the Baltic — so Finnish coastal waters are mapped in far more detail than any other sea, and DENSITY ON THIS LAYER IS…; Source: OpenStreetMap / Overpass (ODbL) · Updates: viewport query, cached hourly · Resolution: mapped cable route · Confidence: reported (issued by an agency or publisher) · off by default
Traffic cameras: Public traffic webcams for ground-truthing visibility and road conditions.; Source: Windy Webcams · Updates: operator-dependent · Resolution: point · Confidence: observed · off by default
Zoning: data-centre use: ZONING DISTRICTS PAINTED BY WHAT THE ORDINANCE SAYS ABOUT DATA CENTRES, FOR THE COUNTIES WHOSE ORDINANCE WAS READ. Each county's own GIS zoning layer, joined by district code to a dated reading of its use table: teal = permitted by right (size caps in the panel), amber = special exception or special use permit only, slate = not permitted (the table's blank cell or a section naming the district), outline only = rul…; Source: County GIS zoning services (Loudoun COL/Zoning; Prince William Planning/Zoning; Henrico Layers/Zoning; Stafford Zoning, dissolved) + each county's zoning ordinance as published (encodeplus, Municode, county PDFs), read and cited per district · Updates: polygons cached one day; verdicts are dated readings, re-read when an ordinance changes · Resolution: zoning district polygon (county-simplified, ~20 m) · Confidence: reported (issued by an agency or publisher) · off by default

maritime · 6

Iceberg tracking: Large named Antarctic icebergs from US National Ice Center analysis via NASA EONET, with each berg's full drift trail. Positions are periodic satellite-image analyses on a roughly weekly cadence, not live GPS — a berg's marker can be a week old while being the freshest fact that exists. EONET keeps events 'open' for years after analysis stops (20 of 33 at probe time, the oldest since 2011); those are counted as do…; Source: US National Ice Center via NASA EONET · Updates: ~weekly · Resolution: berg point + drift trail · Confidence: observed · off by default
Magnetic declination: Isogonic lines — each one a line of equal magnetic declination, the angle between true north and where a compass actually points — at 2° intervals, computed here from the official World Magnetic Model 2025 coefficients. NOTHING IS FETCHED FOR THIS LAYER: NGA publishes its Magnetic Variation charts as PDFs, and tracing contours out of an image would be inventing geometry from a picture, so this evaluates the same 9…; Source: WMM-2025 — NOAA NCEI / NGA (US Government, public domain) · Updates: computed; the model is issued for 2025–2030 · Resolution: 2° grid, 70°N–70°S · Confidence: modelled · off by default
Ports and chokepoints: Major ports and strategic maritime passages.; Source: IMF PortWatch · Updates: annual · Resolution: point · Confidence: derived (computed by Cartevoir)
Water levels & tides: Latest observed water level at NOAA CO-OPS stations (301 network-wide, up to 40 per view), with next high/low tide on click. Coastal stations report tide height above MLLW; the 52 Great Lakes stations report lake surface elevation above IGLD — two different phenomena, never one scale, and lakes have no tide predictions. Levels are preliminary sensor data until NOAA verifies them, and readings older than 60 min are…; Source: NOAA CO-OPS · Updates: 6 min · Resolution: station point · Confidence: observed · off by default
Wave height (WW3): Significant wave height from the WaveWatch III global wave model — a model nowcast, not buoy measurements; where a buoy disagrees, believe the buoy. Rendered on a fixed 0-10 m scale so colors compare across the map. Served near-now by the provider; the exact model hour is not surfaced per tile.; Source: PacIOOS ncWMS / NOAA WaveWatch III · Updates: model cycle (server serves near-now) · Resolution: ~0.5° global model grid · Confidence: modelled · off by default
World Port Index: Every port NGA has catalogued — 2,951 across 170 countries, counted 2026-08-31, from the US National Geospatial-Intelligence Agency's World Port Index, US Government public domain. This is a FACILITY reference and not a traffic feed: it says what a port is equipped to do, never whether it is busy, open or operating today, which is what the separate Ports & chokepoints layer (IMF PortWatch, 600 ports) answers. THE …; Source: NGA World Port Index (US Government, public domain) · Updates: cached daily · Resolution: individual port · Confidence: reported (issued by an agency or publisher) · off by default

operations · 5

Aircraft: Recent ADS-B positions. Off by default — the feed is only as live as the source we can reach, and an empty sky with the layer on reads as a claim.; Source: adsb.lol · Updates: 30 sec · Resolution: point · Confidence: observed · off by default
Live train estimates: Estimated current rail positions from scheduled trips, distinguished when realtime updates informed the trip.; Source: Transitous / participating GTFS feeds · Updates: provider-dependent · Resolution: interpolated route position · Confidence: modelled · off by default
Street imagery: Crowd-contributed street-level photography from Mapillary (Meta) — the open-world Street View. Capture tracks appear at z12, clickable photo dots at z14; clicking opens the photo and a walkable viewer. Coverage exists where volunteers drove, not everywhere, and capture dates span years — a street may have changed since its newest photo. Imagery CC-BY-SA, attributed per image.; Source: Mapillary (Meta) · Updates: continuous community uploads · Resolution: photo point / capture track · Confidence: observed · off by default
Vessels: Recent AIS positions. Off by default until a hosted ingest worker is proven live; an empty ocean with a green toggle is a lie.; Source: AISstream.io · Updates: stream · Resolution: point · Confidence: observed · off by default
Your data: The operator's own facilities, fleet, boundaries, routes or projects, imported in the rail's Your-data section from CSV, GeoJSON, KML, KMZ, GPX or a zipped Shapefile. Parsed in the browser and persisted only there, unless the operator is signed in and saves it to their account. Renders as DECL (docs/VISUAL_GRAMMAR.md): violet, long-dash, hollow — true because the operator said so, not because anything measured it,…; Source: Local user import · Updates: on import · Resolution: point, line or area as supplied · Confidence: reported (issued by an agency or publisher) · off by default

population · 5

Global development: Population, economy, connectivity, infrastructure, health and emissions indicators.; Source: World Bank WDI · Updates: annual · Resolution: country · Confidence: reported (issued by an agency or publisher) · off by default
Holy & pilgrimage sites: 7,864 named holy and pilgrimage sites with coordinates from Wikidata and UNESCO — St. Peter's, the Holy Sepulchre, Masjid al-Haram, the Western Wall, Mahabodhi, Lumbini, Akal Takht, Santiago de Compostela — coloured by religion and sized by class. By default the 4,577 primary, major-pilgrimage and UNESCO/globally significant sites draw; a switch adds the rest. Christianity's 4,749 of 7,864 is SOURCE BIAS: Wikidata…; Source: Wikidata (CC0) · UNESCO World Heritage Centre · Updates: committed compilation (2026-09-02) · Resolution: point (Wikidata P625 / UNESCO) · Confidence: reported (issued by an agency or publisher) · off by default
Internal displacement: People displaced INSIDE their own country, event by event, from IDMC's Internal Displacement Updates under CC BY-IGO — 3,710 records across 97 countries in a rolling 180-day window, counted 2026-08-31. EVERY MARK IS SIZED BY PEOPLE AND NEVER BY RECORD COUNT, and the reason is the single most important thing to know about this dataset: measured on the same day, Peru filed 1,046 records covering 39,065 people while …; Source: IDMC Internal Displacement Updates (CC BY-IGO) · Updates: cached 6 hours · Resolution: town to country centroid, stated per record · Confidence: reported (issued by an agency or publisher) · off by default
Places of worship (OSM): 1,951,336 places of worship from OpenStreetMap — churches, mosques, temples, synagogues, gurdwaras, shrines and religious grounds — as vector tiles, drawn from zoom 6 and coloured by religion, with Christians shaded by family (Catholic, Protestant, Orthodox, Oriental Orthodox, Anglican). 181,848 carry no religion tag and draw grey. OSM is volunteer-mapped: dense in Europe and much of the United States, thin in inl…; Source: OpenStreetMap via Geofabrik (osmium/pyosmium extract, 2026-09-02) · Updates: committed compilation; re-run monthly from Geofabrik latest · Resolution: point (node, or centroid of way/relation) · Confidence: reported (issued by an agency or publisher) · off by default
Religion (majority & shares): Countries shaded by their PLURALITY religion from one published vintage per country — Pew Research Center's 2020 identity estimates for 200 countries, Pew's 2012 landscape for 26, the CIA World Factbook for 13 — or by one religion's share in six classes. Every figure is a REPORTED estimate of religious identity, not of practice: Pew's 2025 method classes 89.6% of China as unaffiliated where Pew's own 2012 study sa…; Source: Pew Research Center (2025; 2012) via Our World in Data · CIA World Factbook · Census of India 2011 · Updates: committed compilation (2026-09-02); Pew revises its series about every five years · Resolution: country (Natural Earth 110m); India states in the panel only · Confidence: reported (issued by an agency or publisher) · off by default

quality · 1

Data readiness: Country indicator coverage and observation recency; missing data is scored separately from a confirmed zero.; Source: Stormglass from provider metadata · Updates: with source refresh · Resolution: country · Confidence: derived (computed by Cartevoir) · off by default

security regulatory · 14

Applied tariffs: Weighted mean tariff a country applies to imports.; Source: World Bank · Updates: annual · Resolution: country · Confidence: reported (issued by an agency or publisher) · off by default
Border wait times: CBP wait times at all 85 US land-border crossings, per lane type. Positions are a join against BTS port points (probed 2026-08-20: 83 of 85 place; Fort Hancock and Paso Del Norte report but cannot be plotted, and multi-crossing ports stack on one point). A crossing with no published reading shows a neutral pending ring, never a green one — measured live, 15 of 85 crossings had no standing reading, and CBP's empty-…; Source: CBP Border Wait Times / BTS port coordinates · Updates: stamped to the minute; readings update roughly hourly, polled every 5 min · Resolution: port point (crossings at one port share it) · Confidence: reported (issued by an agency or publisher) · off by default
Conflict & unrest: Normalized political-violence, protest and organized-conflict events from configured licensed sources.; Source: UCDP GED · Updates: provider-dependent · Resolution: event point · Confidence: reported (issued by an agency or publisher) · off by default
Election schedules: Countries shaded by days until their next DATED election — Wikidata's crowd-maintained calendar (CC0, ~88 countries live-probed) plus FEC dates for US federal races. Date precision is first-class: a scheduled day renders as a day, an expected month or year renders as exactly that, never as an invented January 1st. An unshaded country has no dated upcoming item, not no election; subnational coverage (German Länder,…; Source: Wikidata SPARQL + FEC election-dates · Updates: cached 6 h; calendars move on weeks · Resolution: national jurisdiction; subnational items listed in the panel · Confidence: reported (issued by an agency or publisher) · off by default
GPS interference: Areas where aircraft reported degraded navigation integrity, aggregated daily to H3 cells by gpsjam.org from ADS-B Exchange data. A PROXY, not transmitter locations: a cell reads 'bad' when the planes crossing it lost GPS accuracy, so coverage exists only where ADS-B-visible aircraft fly, and the picture is one day old by design. Cells with under two affected aircraft are not drawn.; Source: GPSJAM (John Wiseman) / ADS-B Exchange · Updates: daily file, 1-day lag · Resolution: H3 resolution-4 cell (~1,770 km²) · Confidence: derived (computed by Cartevoir) · off by default
History timeline: 27,258 dated, located events under a log-time slider: NCEI significant earthquakes (6,633) and tsunamis (2,666), Smithsonian GVP Holocene eruptions (11,088) and Wikidata battles (6,871), from stratigraphically-dated eruptions ~55,500 BCE to now. ENABLING IT SUSPENDS THE LIVE LAYERS — a snapshot is kept and restored when it is switched off — because a 1755 earthquake read against today's aircraft is a category erro…; Source: NOAA NCEI hazards (PD) · Smithsonian GVP (cite) · Wikidata (CC0); compiled 2026-09-02 · Updates: static compilation; rebuilt on demand · Resolution: event point as published · Confidence: reported (issued by an agency or publisher) · off by default
Legislative activity: Countries shaded by tracked legislative and executive items — bills in process, newly published law, and official calendars, from each system's own machine route (probed live before adoption: Congress.gov, UK Parliament, legislation.gov.uk, Bundestag DIP, EUR-Lex, and open city-council tenants). Coverage is source-adopted, NOT global: an unshaded country is an untracked jurisdiction, never a quiet one. The full di…; Source: Official legislative APIs and gazettes (per-jurisdiction) · Updates: polled every 15 min; upstreams move on hours · Resolution: national jurisdiction (city items counted to their country) · Confidence: reported (issued by an agency or publisher) · off by default
Military installations: Bases, naval stations, airfields, barracks, ranges and training areas mapped in OpenStreetMap (landuse=military plus area-grade military=* tags; gate/bunker/checkpoint clutter is filtered). Volunteered geographic information with a hard caveat: coverage in Russia, China and other restrictive states is deliberately sparse or removed, so this shows MAPPED installations, never a census — absence is absence of mapping…; Source: OpenStreetMap via Overpass (viewport-scoped) · Updates: OSM replication; polled with the infrastructure viewport query · Resolution: installation footprint or point · Confidence: reported (issued by an agency or publisher) · off by default
Military sites (global): 51,629 named military sites worldwide, compiled from OpenStreetMap (ODbL, ~44k), Wikidata (CC0, ~10k) and the US NTAD/DISDI boundary set (public domain, 824). THE FILTER KEY IS THE OPERATOR, AND ON 36,563 OF 51,629 SITES THAT VALUE WAS INFERRED — OSM carried no operator tag, so the compiler defaulted it to the country the site sits in. That default is right almost everywhere and it is still an inference, so every …; Source: OpenStreetMap (ODbL) + Wikidata (CC0) + US DOT NTAD/DISDI (public domain); compiled 2026-09-01 · Updates: static compilation; rebuilt from source on demand · Resolution: site point (centroid for 38,496 mapped areas) · Confidence: reported (issued by an agency or publisher) · off by default
News desks: Curated + directory news coverage: 206 countries, 11,477 named sources — publisher RSS, public Telegram channels via Telemetr.io, and linked outlets. Shading is OUR source count, never story volume; every item says which outlet said it and how it reached us.; Source: Curated catalogue (owner) / Z directory / publisher RSS / Telemetr.io · Updates: on demand, 8-min server cache · Resolution: country · Confidence: reported (issued by an agency or publisher) · off by default
Radiation monitors: Ambient gamma radiation from two networks that never share a scale: EPA RadNet's 133 official US monitors (hourly dose-equivalent rate in nSv/h, drawn at city centroids because EPA publishes no exact sites, and classed against each station's own 30-day median — never a fixed national threshold, which would flag every high-altitude station), and the worldwide Safecast volunteer fleet (Geiger-tube counts in cpm, tub…; Source: EPA RadNet + Safecast · Updates: RadNet hourly · Safecast minutes · Resolution: station point (RadNet: city centroid) · Confidence: observed · off by default
Road traffic vs normal: Live vehicle counts from ~20,500 Dutch road sensors (NDW, one-minute cadence), each painted by its DEVIATION FROM ITS OWN HOUR-OF-WEEK NORMAL — the only reading a count supports. A raw count means nothing: 1,200 an hour is ordinary at 17:00 Tuesday and extraordinary at 03:00 Sunday. THE NORMAL IS LEARNED, NOT DOWNLOADED: NDW publishes now and not history, so a worker samples every site every five minutes into 168 …; Source: NDW open data (attribution) — live; baselines learned by worker/traffic-baseline.ts · Updates: live feed every minute; layer polls each 60 s · Resolution: sensor point (lane group) · Confidence: observed · off by default
US Congress (119th): Every House district and Senate state shaded by the party of who holds it — 537 members of the 119th Congress from the unitedstates/congress-legislators roster (CC0), on the same Census TIGER district and state polygons the election-results layer draws. A click opens the member: photo, party, seat, in office since, official site, Washington office phone, social handles, FEC id, and a TABLE of their COMPANY-PAC MON…; Source: unitedstates/congress-legislators · Census TIGER 2025 · FEC bulk (2024, 2026) · Updates: committed compilation (2026-09-02); the roster changes with vacancies and special elections · Resolution: House district / state polygon · Confidence: reported (issued by an agency or publisher) · off by default
US state legislatures: Every state senate and state house district shaded by the party of who holds it, one chamber at a time — the statehouse twin of the Congress layer, so a data-centre site shows who represents it where most siting law is written. Districts are the Census Bureau's 2025 cartographic boundaries (public domain); members are the sitting rosters the Intellivoir service keeps for all fifty legislatures and DC. A district's…; Source: US Census TIGER cartographic 2025 (SLDU/SLDL) · Intellivoir state rosters · Updates: rosters refreshed by the service; the page caches an hour · Resolution: state legislative district · Confidence: reported (issued by an agency or publisher) · off by default

weather · 6

Buoy observations: Wind, waves, pressure and sea temperature measured by instruments in the water. The only marine surface here that is observed rather than modelled — when it disagrees with the forecast, the disagreement is the point. Most stations report wind but not waves.; Source: NOAA NDBC · Updates: hourly · Resolution: station point · Confidence: observed · off by default
Day/night: Computed solar terminator.; Source: Stormglass · Updates: continuous · Resolution: global · Confidence: modelled
Geostationary satellite: GeoColor or clean infrared imagery.; Source: NASA GIBS / EUMETSAT · Updates: 10–15 min · Resolution: geostationary imagery · Confidence: observed
NWS alerts: Official US weather alerts.; Source: NOAA / NWS · Updates: 1 min · Resolution: warning polygon or zone · Confidence: reported (issued by an agency or publisher)
Precipitation accumulation: MRMS radar-derived precipitation totals over the last 24, 48 or 72 hours. CONUS-only, and transparency is not zero: an empty tile outside radar coverage means no data, not no rain. Radar estimates of rainfall, not gauge measurements.; Source: NOAA MRMS via Iowa Environmental Mesonet · Updates: rolling accumulation, cache-refreshed · Resolution: ~1 km radar mosaic (CONUS) · Confidence: derived (computed by Cartevoir) · off by default
Weather radar: Precipitation radar composite.; Source: IEM / RainViewer · Updates: 5–10 min · Resolution: provider tiles · Confidence: observed