Alert archive

Weather alerts in the United States, 1999

24,020 weather alerts in 1999, from the National Weather Service and the Storm Prediction Center. Each alert counts once, however many counties it covered.

Weather alerts by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Alerts
24,020
Warnings
23,300
Watches
720
Advisories
0
Busiest month
May4,942 alerts
Busiest day
January 22, 1999574 alerts

Over time

By month

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning17,594
Tornado Warning2,676
Severe Thunderstorm Watch468
Tornado Watch252
Flooding
Flash Flood Warning3,030

By state

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

10 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. January 22, 1999574alerts
  2. May 17, 1999528alerts
  3. May 4, 1999527alerts
  4. May 6, 1999338alerts
  5. June 6, 1999335alerts
  6. June 4, 1999306alerts
  7. June 5, 1999296alerts
  8. June 2, 1999283alerts
  9. April 3, 1999275alerts
  10. June 11, 1999275alerts
  11. June 10, 1999265alerts
  12. July 6, 1999260alerts
  13. May 22, 1999241alerts
  14. July 24, 1999238alerts
  15. June 1, 1999237alerts

Nearby

Alerts in force nowThe tornado archiveThe radar archive19982000

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.