Click any colored area on the map to see the storm details + ground truth.
Radar hail size (MESH/POSH):
NOAA MRMS Multi-Radar/Multi-Sensor
Storm context (ProbHail, WBZ, REF-20C, VIL):
NSSL ProbSevere v3
Ground truth (Hail/Wind LSRs):
NWS Local Storm Reports via Iowa Environmental Mesonet
Geocoding: US Census Bureau (TIGER)
Basemap: OpenStreetMap / CARTO
All data sources are NOAA/NSSL public datasets. Confidence model is calculated locally from MESH × ProbSevere × LSR fusion + Donavon-Jewett melt correction.