Storm Event Archive

Each page in this archive documents one storm day for one city: a day when National Weather Service storm reports or airport station gusts within 25 miles of the city met NWS severe criteria — hail 1.00 inch or larger, or a gust of 58 mph or more. The archive holds 499 storm days across 50 states, newest first.

How a storm day earns a page

A page is published only when an observed report clears the NWS line near a city that has a StormAuditor storm data page: a hail report of 1.00 inch or more, or a measured gust or wind report of 58 mph or more, within 25 miles.

At least two independent observations are required, and pages are kept for the most significant of those days, so not every day that meets the NWS line has a page. Warnings alone never qualify a day, because a warning is a forecast of risk, not an observation.

Each observation counts once. A storm report that relays an airport weather station's reading (the same station, the same gust and the same time) counts once, as the station reading. Reports merge only when they are copies of one report: the identical report repeated, or the same report arriving through another feed (SPC or NCEI). Different reports from the same spot, such as two hail sizes reported at one place, count separately.

Each page lists the reports with sizes, places, distances and sources, any airport station gusts with times, the other cities hit the same day, and a free way to check one address for that date with the Free Report Snapshot or the Address Lookup. Pages stay online as a permanent date-of-loss record; for day-by-day activity across every state, use the Storm Calendar (Pro plans and higher).

City pages use a lower screening bar for their storm-day tables — hail 0.75 in.+ or wind 45 mph+ (StormAuditor screening) — so a city table lists more days than this archive; a date that has a page shows the same largest hail and strongest gust in both places. See Methodology.