The Weather TV Radar

National composite radar mosaic showing precipitation intensity. Animated with the past hour of radar frames plus a 3-hour HRRR-powered forecast. The foundation of the radar map — this is the layer you see by default.

Infrared cloud imagery from GOES-East showing current cloud cover across North America. Updated every 10 minutes. Full frame-by-frame animation showing cloud movement is planned by end of year.

Current "feels like" temperatures — heat index in summer, wind chill in winter — displayed as labeled city badges across the United States. State fills are color-coded by temperature range. Toggle between current feels-like and today's forecast high/low.

Dual-polarization product from individual WSR-88D radar sites that distinguishes rain, hail, snow, and debris. When a tornado is on the ground, a debris signature — a low-CC area within a storm — is one of the most reliable confirmation signatures available. Activate it from Radar Options in the layer panel.

Additional velocity and reflectivity products from individual WSR-88D radar sites. These require selecting a specific radar station and are in active development. Planned by end of year with full animation support.

Animated radar composite for Canada from Environment Canada's MSC GeoMet service, covering all provinces and territories. Toggle it on in Extended Coverage in the layer panel. The composite updates continuously and displays precipitation intensity using the same color scale as the US NEXRAD mosaic.

Active weather alerts from Environment Canada displayed as a color-coded WMS tile overlay on the map, plus a live alert panel showing current warnings, watches, and advisories by province. Updated every 60 seconds — the same urgency as US NWS alerts. Warnings in red, watches in orange, advisories in yellow, statements in blue.

All active National Weather Service watches, warnings, and advisories rendered as color-coded polygons on the map. Tornado warnings in red, severe thunderstorm warnings in orange, flash flood warnings in green, and more — including Air Quality Alerts, Dense Smoke Advisories, and Hazardous Air Quality Warnings. Full color legend shown on the map. Updates every 60 seconds via a server-side cache so NWS infrastructure isn't overloaded during outbreak events.

If your location is inside an active watch or warning polygon, a scrolling ticker appears at the bottom of the radar map showing all active alerts for your area — tornado warnings, severe thunderstorm warnings, air quality alerts, and more. Prioritized by severity. Requires using the My Location button or entering an address. Click anywhere inside an alert polygon for the full alert text in a popup.

Opt-in push notifications that alert you when a watch or warning is issued for your area — even when the app is in the background or closed. Based on your accepted geolocation. Tap Allow Notifications when prompted, or use the My Location button to register your area. Works on desktop and Android. iOS support follows browser push notification standards.

Wildfire smoke density polygons from NOAA's Hazard Mapping System, updated daily. Light, medium, and heavy smoke density displayed in graduated amber tones across the map. Particularly useful during Canadian wildfire events when smoke drifts across the northern US, creating hazardous air quality conditions far from the fire source.

Current wildfire boundaries from the National Interagency Fire Center's WFIGS database, updated continuously as fires grow and are contained. Each perimeter shows the incident name, acreage, containment percentage, and cause. Click any perimeter for full details.

Real-time AQI readings from EPA/AirNow monitoring stations across the US and parts of Canada, displayed as color-coded markers following the standard AQI scale — green through maroon. Click any station for the current AQI, category (Good through Hazardous), primary pollutant, and reporting area. Updated hourly. The layer automatically loads all stations visible in your current map view.

Storm Prediction Center convective outlooks for Days 1, 2, and 3, showing categorical risk areas from Marginal through High Risk. Updated daily. The single most important map for understanding where severe weather is expected.

When SPC issues a Mesoscale Discussion — a short-fuse analysis of developing convective situations — the discussion area appears on the map as a clickable polygon with the full text. These precede watch issuances and are closely followed by professional storm chasers.

Local Storm Reports from the last 3 hours, including tornado touchdowns, large hail, damaging winds, and flooding. Each report is a tappable marker showing the report type, magnitude, location, and spotter remarks. Sourced from the NWS LSR feed.

Real-time positions of active storm chasers from the Spotter Network, displayed as live dots on the map. During active chase days, you can see exactly where professional and amateur chasers are positioned relative to storm cells. Tap any dot to see the chaser's name and when they last reported. Updates continuously.

Real-time lightning strike data from the Blitzortung network, displayed as animated flashes on the map. In development. Requires a server-side relay to comply with Blitzortung's data usage policy.

Live traffic camera feeds from state Departments of Transportation, useful for seeing real-world road conditions during severe weather. Select your state from the Traffic Cameras section of the layer panel. Coverage includes Wisconsin, Georgia, North Carolina, Arizona, Utah, Minnesota, Illinois, and more states being added continuously as DOT data feeds are identified. Camera images refresh every 30 seconds.

NOAA's hourly operational forecast model showing simulated radar reflectivity out to 3 hours. Updated hourly. Use the Future button in the toolbar to step through the forecast. The HRRR excels at short-range convective forecasting, especially for timing storm initiation.

NOAA's next-generation forecast model, replacing the HRRR with higher resolution and better convective physics. RRFS becomes fully operational August 31, 2026. We will integrate it on that date. Think of it as a significantly improved HRRR.