Live Radar & Storm Replay

Animated national NEXRAD radar: a 2-hour live loop, live NWS warning polygons, SPC severe outlooks, and a GOES-19 satellite deck — or replay the archived radar of any storm day back to 2012 in five-minute frames, free for everyone.

Live radar, warnings, outlooks, and satellite on one free map

The live radar loop plays the last two hours of the national NEXRAD composite — every WSR-88D radar in the network merged into one reflectivity mosaic — in ten-minute frames — and when short-term projection frames are available from the public feed, extends ahead with a clearly FUTURE-badged extrapolation of current storm motion (never a forecast of new development). Active NWS warning polygons (tornado warning, severe thunderstorm warning, flash flood warning and more) draw over the radar straight from the National Weather Service alerts API, refresh every two minutes, and are listed beside the map — tap any warning to zoom to it. A live GOES-19 satellite deck shows GeoColor, clean infrared, and water vapor views from NOAA/NESDIS STAR, and dropping a pin or using your location adds the nearest-station conditions (temperature, wind and gusts, humidity) with a one-tap jump to the full 7-day forecast. An Outlook toggle shades the official SPC Day-1 categorical severe weather outlook (marginal through high risk) under the radar.

Replay any storm day back to 2012

Replay mode plays the archived national composite for any date back to 2012 in the same five-minute steps — all 288 frames of a storm day, scrubbable and animated. It is the radar movie behind the mapped results on the Storm Map Dashboard: watch the storm develop on radar, then open the same date there for the hail sizes and peak gusts alongside ground reports and warnings, or run a free address lookup to see what reached a specific property under the published methodology.

Free for everyone

Live radar, warnings, satellite, and full-day replay are free with no account — built entirely on public NOAA, NWS, and NEXRAD feeds, documented on Data Sources. For forecasts at a specific location, see the 7-day & hourly forecast; for storm history at an address, start with the free Report Snapshot.

Primary source documentation

Every dataset StormAuditor uses is public and officially documented — verify any layer at the source:

• NOAA NSSL MRMS program — the Multi-Radar Multi-Sensor system behind MESH radar-estimated hail size, with the algorithm lineage in Witt et al. (1998).
• NOAA NCEP RTMA/URMA products — the real-time and un-restricted mesoscale analyses that serve as the NWS analysis of record for surface wind.
• NOAA HRRR model — the High-Resolution Rapid Refresh fields that supplement recent dates.
• NWS ASOS program — the automated airport-grade surface observing network supplying measured gusts (with AWOS operated under FAA standards).
• SPC severe weather reports and NWS Local Storm Reports — spotter, public, and emergency-management reports of hail and wind.
• NCEI Storm Events Database — the official post-storm federal record.
• FEMA disaster declarations — federal recognition of major events.