Initializing Multi-Hazard Wind Risk Data Layers
FEMA NRI · NOAA SPC · Historical Tornado Tracks
MMCG Database Interactive Tool
U.S. Multi-Hazard Wind Risk Map
Hurricane · Tornado · Strong Wind · Hail · FEMA NRI risk scores · SPC convective outlooks · CRE insurance screening
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Data Layers
Tornado History
Historical Tornado Tracks
SPC/FEMA 1950–present
Significant (EF3+)
~4,200 most destructive events
FEMA Risk Scores
Tornado Risk (NRI)
Census-tract level
Hail Risk (NRI)
Census-tract level
Strong Wind Risk (NRI)
Census-tract level
Real-Time Outlooks
SPC Day 1 Outlook
Convective risk categories
SPC Tornado Probability
Day 1 probabilistic
Reference
Place Labels
Aerial Imagery
ESRI World Imagery
Legend
EF Scale (Tornado Intensity)
EF0 (65–85 mph)
EF1 (86–110 mph)
EF2 (111–135 mph)
EF3 (136–165 mph)
EF4 (166–200 mph)
EF5 (200+ mph)
SPC Outlook
Thunder (TSTM)
Marginal (MRGL)
Slight (SLGT)
Enhanced (ENH)
Moderate (MDT)
High (HIGH)
FEMA NRI Risk
Very Low
Relatively Low
Relatively Moderate
Relatively High
Very High
Multi-Hazard Wind Risk Summary
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