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Earth & Space Weather Watch

Georeferenced satellite imagery from several sources over any country or city — NOAA's GOES, NASA's MODIS and VIIRS, Esri and Sentinel-2 — with precise national outlines, a compare/blend layer, NOAA's recent animation loop, and real-time space weather from the Space Weather Prediction Center.

NOAA GOES · East / West NASA · MODIS · VIIRS · GIBS Esri · Sentinel-2 SWPC · space weather Montevideo · --:--
SATELLITE MAP

Georeferenced multi-source map

Pick a country to draw its outline and frame it, or search any city. Choose a satellite source, add a second source as a compare layer and blend them with the opacity slider, step back through earlier GOES frames, or play a loop.

Live (latest)
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This satellite layer didn't return tiles. NOAA/NASA identifiers can change (EOX Sentinel-2 layers are tagged by year). Try another source, or switch to OpenStreetMap — outlines and markers work on any base. URL tried:

Cross-referenced sources: NOAA GOES via NASA GIBS (geostationary, ~10-min), NASA MODIS Terra and VIIRS daily true-colour and night-lights, Esri World Imagery, and EOX Sentinel-2 cloudless. Put any two on the map with the Compare layer and blend them with the opacity slider — e.g. live GOES cloud over a Sentinel-2 land background.

Everything loads straight from NOAA, NASA, Esri and EOX in your browser — no key, no backend. City search uses OpenStreetMap's Nominatim (please keep it light). If a source stays blank, its identifier likely changed; they all live in one editable LAYERS object near the top of the script.

ENVIRONMENTAL LAYERS · MULTI-SOURCE

Environment: fires, temperature, air & weather

A second map for environmental data, cross-referencing NOAA and other providers: active fires, land and sea surface temperature, aerosols/smoke, and live precipitation and clouds. Every layer you switch on is listed below with its full source — tap to drill down.

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Active sources — tap any to drill down
Switch on a layer to see its full source here.

Fires, land/sea temperature and aerosols come from NASA/NOAA via GIBS (daily, near real-time); precipitation and infrared clouds are live from RainViewer (which aggregates national weather-service radars, including NOAA). Active fires also include Copernicus GWIS (EC JRC) hotspots and burnt areas via WMS. Each layer carries its own attribution on the map and a full drill-down above; if a layer fails to load, the map now says so and exposes the failing URL. Overlay identifiers live in the editable ENV object in the script.

Winds & temperature (live model)

Animated winds, temperature, pressure and more over Uruguay, from Windy — switchable between the NOAA GFS and ECMWF models. Click anywhere on it to read the values at that point.

Source: Windy.com, rendering ECMWF and NOAA GFS forecast models. Embedded directly from Windy; interaction and values are provided by Windy.

NOAA STAR · RECENT LOOP

NOAA's latest animated loop

NOAA STAR publishes ready-made animation loops by region/sector. The newest loop is found automatically (its filename carries a timestamp, so it changes constantly). Pick a satellite, region and product, then load the latest — or paste a NOAA GIF URL directly.

That GIF URL didn't load. NOAA prunes old loops, so a timestamped link expires after a while — load the latest, or paste a current URL. URL tried:
NOAA GOES recent animation loop
Finding the latest loop…

Source: NOAA NESDIS STAR GOES Image Viewer. These are per-sector loops (the full disk doesn't publish a fixed-name GIF). The newest file is discovered by listing NOAA's folder; if your browser blocks that listing, open the folder, copy the newest .gif name and paste the URL above. Loops cover roughly the last several hours.

SPACE WEATHER · SWPC

Real-time space environment

Live from NOAA's Space Weather Prediction Center. These numbers are global, but they drive the conditions that matter locally for GNSS, HF radio, satellite operations and optical observing at OALM.

GEOMAGNETIC Kp iPlanetary Kp index, 0–9. From Kp 5 a geomagnetic storm is underway (NOAA G-scale G1–G5), which can degrade GNSS accuracy and HF propagation.
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Quiet
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SOLAR WIND SPEED iBulk speed of the solar wind measured at the L1 point by DSCOVR. Typical ≈350–450 km/s; sustained >600 km/s often precedes geomagnetic activity.
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IMF Bz iNorth–south component of the interplanetary magnetic field (nT). Strongly negative (southward) Bz couples energy into the magnetosphere and is the key storm driver.
—nT
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GOES X-RAY FLUX iSoft X-ray flux (0.1–0.8 nm) from GOES. Flare classes A/B/C/M/X — each step is ×10. M and X flares can trigger daytime HF radio blackouts and ionospheric disturbances.
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GNSS positioning

High Kp and ionospheric storms add range error and can cause loss of lock — relevant for survey, precision agriculture and any GNSS-dependent timing.

HF & aviation radio

M/X-class flares ionise the dayside D-layer, causing shortwave fade-outs on the sunlit side of the Earth — including South America when the flare is in local daytime.

Satellite operations

Storms heat and expand the upper atmosphere, raising drag on LEO objects and shifting orbits — directly relevant to SSA tracking and conjunction screening.

Observing at OALM

Space weather doesn't cloud the sky, but strong geomagnetic activity raises sky brightness and, at extreme storms, faint aurora can reach unusually low southern latitudes.

LATEST SWPC ALERTS & BULLETINS
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