National NOAA MRMS mosaic, every few minutes.
Radar is for situational awareness, not emergency alerts.
This map may be delayed and only updates while this page is open with an internet connection. For watches, warnings, and life-safety information, always rely on a NOAA Weather Radio, Wireless Emergency Alerts, or the NWS app.
Filter by country, then by category. Both filters have to allow an alert for it to show — e.g. turning USA off hides every USA alert regardless of the Watch/Warning toggle.
Choose which watch, warning, and advisory categories appear on the map.
Areas NWS forecasters are watching closely, often before a watch or warning.