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Reference

A reference for everything in Satellite Weather — coverage and cadence, the satellite channels and RGB products, overlay data sources, analysis tools, and keyboard shortcuts. New here? Start at the overview, or launch the viewer.

Weather safety notice. Satellite Weather is an informational and educational tool. Imagery, radar, lightning, model, and warning data come from third-party and government sources and may be delayed, incomplete, or inaccurate. Do not rely on this service as your sole source for decisions affecting safety of life or property. Always follow official National Weather Service warnings and local emergency management guidance.

Coverage & Domains

Imagery is generated for dozens of geographic regions, from full-hemisphere views down to regional, state, and metro-area crops. Every product is available across every domain.

DomainCoverageUpdate Cadence
Full Disk Entire Western Hemisphere from GOES — best for hurricanes and large-scale patterns Every 10 minutes
CONUS Continental United States — the daily workhorse Every 5 minutes
Mesoscale 1 & 2 Targeted 1-minute sectors aimed at active severe weather or fires by the NWS Every 1 minute
Regional / Sub-regional West, Central, East US, Northwest, Great Lakes, Southeast, and more Matches parent domain
State & Metro Individual states and local metro zoom presets Matches parent domain
Ocean & Tropical Sectors Atlantic, Pacific, Caribbean, and extratropical ocean regions Matches parent domain

Channels & RGB Products

The ABI instrument captures 16 spectral channels ranging from visible to longwave infrared. Single-channel views show one wavelength directly. RGB composite products combine two or three channels into false-color images designed to highlight specific phenomena.

RGB Composites

ProductWhat It Shows
GeoColorTrue color by day; IR-shaded with city lights at night. Best all-purpose view.
SandwichVisible texture with IR cloud-top temperatures — excellent for severe convection by day.
AirMassColor-codes air masses: warm/moist green, dry/stratospheric red, cold polar blue. Reveals fronts, dry slots, and tropopause folds.
Day Cloud PhaseColors clouds by height and phase near initiation — useful for tracking convective trends.
Night MicrophysicsNighttime analog to Day Cloud Phase — low clouds cyan, mid-level yellow, high clouds red-purple.
Day Land Cloud FireNatural color with land changes and fire detection — burn scars, healthy vegetation, and active fires in one view.
Fire TemperatureQuantitative fire intensity from shortwave IR — brighter means hotter.
Day Snow / FogSnow appears red-pink; fog and low cloud appear pale purple. Daytime only.
Night Snow / FogFog and low clouds as blue-cyan; high clouds black. Nighttime only.
DustBlowing dust and volcanic ash plumes highlighted in magenta.
Split Window DifferenceChannel 14 minus 15 — low-level moisture gradients and dust front signatures.

Single Channels (1 – 16)

All 16 ABI channels are available, spanning blue visible (0.47 μm) through CO₂ infrared (13.3 μm). Key channels: Channel 2 (0.64 μm red visible, 0.5 km resolution) for daytime detail; Channel 7 (3.9 μm shortwave IR) for fire hot spots; Channels 8–10 (water vapor triplet at 6.2, 6.9, 7.3 μm) for moisture and jet-stream analysis; Channel 13 (10.3 μm clean IR) as the primary nighttime and storm-intensity channel.

Overlay Data Sources

OverlaySourceProducts
GLM Lightning GOES Geostationary Lightning Mapper via AWS Flash density, individual flash points, minimum flash area
NWS Warnings NWS via Iowa Environmental Mesonet Tornado warnings, severe thunderstorm warnings, flash flood warnings, watches
MRMS Radar NOAA Multi-Radar Multi-Sensor via AWS Composite reflectivity overlaid on satellite imagery
SPC Products Storm Prediction Center Day 1–2 convective outlooks (categorical + probabilistic tornado/wind/hail), mesoscale discussions
WPC Products Weather Prediction Center Excessive rainfall outlook (Day 1–3), mesoscale precipitation discussions
ProbSevere NOAA/CIMSS Per-storm probability of severe weather (hail, wind, tornado) in next 60 minutes
METAR Plots Aviation Weather Center Surface observations — wind barbs, temperature, dewpoint, pressure, sky cover
RTMA NOAA Real-Time Mesoscale Analysis via AWS 2m temperature, 2m dewpoint, 10m wind barbs (CONUS, Alaska, Hawaii grids)
RAP Model Rapid Refresh via AWS Temperature, geopotential height, relative humidity, wind barbs, omega — at 925, 850, 700, 500, 300 mb

Interactive Tools

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Drawing & Annotation

Draw cold fronts, warm fronts, occluded fronts, stationary fronts, troughs, drylines, pressure centers (L/H), and freehand lines. Add text labels. Adjustable color and line weight. Drawings are included in screenshots and GIF exports.

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Pixel Inspector

Hover over any point on the image to read channel values — most useful on IR channels to get cloud-top brightness temperature in real units. Pairs with the colorbar scale toggle.

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Distance Measurement

Click two points to measure the distance in kilometers, miles, and nautical miles. Uses domain-aware scaling for accuracy across all region sizes.

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Time Series Chart

Pin a location on the map and chart its value over the full animation loop. Useful for tracking storm intensification, fire growth, or fog burn-off at a fixed point.

Dual & Quad Pane

Show two or four products side by side, time-locked to the same frame. Common combo: Sandwich + Channel 13 + MRMS + GLM in a quad for complete storm-scale analysis.

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Screenshot & GIF Export

Export a static screenshot or animated GIF of the current loop, including any drawings and overlays. Adjust frame count and speed before exporting for social-media-ready files.

Animation & Time Loops

The playback bar spans the bottom of the viewer. Play, pause, step frame by frame, or scrub to any time. Each frame is labeled with UTC and local time. Loop settings (speed, frame count, dwell on last frame, rock/oscillate mode) are configurable via the gear icon — and loop settings are saved as part of a favorite so each saved view can have its own playback style.

Keyboard Shortcuts

KeyAction
SpacePlay / Pause animation
/ Step one frame back / forward
Home / EndJump to first / latest frame
FToggle fullscreen
RToggle rock (oscillate) mode
SOpen loop settings
DOpen drawing tools
IToggle pixel inspector
TToggle time series chart
EscClose any active panel or modal

How It Works

The backend runs on a Linux server that continuously processes raw GOES ABI Level 1b data from NOAA's public AWS buckets. Each processing cycle:

  1. Downloads all 16 spectral channels for the target satellite and domain.
  2. Calibrates radiances and computes brightness temperatures and reflectances.
  3. Generates RGB composites using Numba-accelerated pixel-level algorithms — GeoColor day/night transitions, AirMass channel math, and so on.
  4. Projects imagery onto regional Mercator grids using a master-projection system, with fast pixel-coordinate extraction for all regions from a single large projection.
  5. Downloads and rasterizes overlay data — radar, lightning, warnings, model fields — onto matching grids.
  6. Writes final PNG/WebP images with timestamps and boundary lines to disk for the web tier.

The web viewer and mobile apps load these pre-rendered images. No heavy processing happens in your browser — the viewer is fast on any device, including older phones.

Plans & the viewer

See plans & pricing and account details on the overview page, or jump straight in — no account required to start.

Launch Satellite Weather

Native iOS and Android apps are also available.

Contact & Support

Questions, bug reports, feedback, or privacy requests? Email us at support@satellitewx.com and we'll get back to you.