What this is
This site computes summary analytics from the public NOAA NCEI Storm Events Database — hail, wind, tornado, flood, and other significant weather events recorded across the United States since 1996. The data is the same archive used by insurance researchers, but presented as open, browsable summaries rather than per-property reports.
If you're researching a specific property, use the live tool at propertywx.com. This site is for understanding regional climatology and trends.
Overview — All States
Events by year and category
Monthly seasonality
Data: NOAA NCEI Storm Events Database · Source: ncei.noaa.gov/stormevents/
State Rankings
Most active states — last 10 years
State pages
Largest hail events on record
| Date | State | County | Hail (in) |
|---|---|---|---|
| Loading… | |||
All-time top 25, by reported hail diameter.
About
The data is processed by an open-source script that runs monthly via GitHub Actions. The full dataset is available at the storm-claim-tool repository.
For property-specific research — radius searches, claim attribution, exportable reports — visit the live tool at propertywx.com.
Research a property →