Alert archive / Colorado

Weather alerts in Denver County, Colorado

2,748 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Denver County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
2,748
Warnings
934
Watches
428
Advisories
453
Busiest year
2023185 alerts
Average year
67over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

By product

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

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Sep 19, 5:55 PM MDTSevere Thunderstorm WarningBOU29 min
Aug 26, 6:37 PM MDTSevere Thunderstorm WarningBOU38 min
Aug 15, 4:39 PM MDTAreal Flood WarningBOU111 min
Aug 15, 2:44 PM MDTFlash Flood WarningBOU3 hr
Aug 15, 2:34 PM MDTSevere Thunderstorm WarningBOU24 min
Aug 15, 1:26 PM MDTSevere Thunderstorm WarningBOU34 min
Aug 14, 3:30 PM MDTFlash Flood WarningBOU99 min
Aug 14, 3:09 PM MDTSevere Thunderstorm WarningBOU36 min
Aug 13, 4:21 PM MDTFlash Flood WarningBOU3 hr
Jul 22, 4:13 PM MDTSevere Thunderstorm WarningBOU32 min
Jul 9, 3:45 PM MDTSevere Thunderstorm WarningBOU45 min
Jun 24, 10:01 PM MDTSevere Thunderstorm WarningBOU29 min

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.