Alert archive / Severe Thunderstorm Watches

Severe Thunderstorm Watches in the United States, 2015

364 severe thunderstorm watches in 2015. Each alert counts once, however many counties it covered. The archive of severe thunderstorm watches reaches back to 1997.

Severe Thunderstorm Watches by state

Each state shaded by its count. Tap a state for its own archive.

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Severe Thunderstorm Watches
364
Busiest month
June104 severe thunderstorm watches
Busiest day
June 22, 20159 severe thunderstorm watches

Over time

By month

By state

Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.

8 more states

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowThe tornado archiveThe radar archive20142016

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.