Alert archive / Colorado

Winter Storm Warnings in Colorado

1,041 winter storm warnings since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of winter storm warnings reaches back to 2005.

Winter Storm Warnings by county

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

Winter Storm Warnings
1,041
Busiest year
201171 winter storm warnings
Average year
47over 22 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 county

Every county with at least one alert. A county page lists each alert that covered it.

24 more counties

The latest winter storm warnings

The most recent on file, newest first.

IssuedProductOfficeCountiesLasted
May 17, 10:58 PM MDTWinter Storm WarningBOUBoulder, Grand, Jackson, Larimer22 hr
May 4, 11:38 PM MDTWinter Storm WarningPUBAlamosa, Costilla, Custer, El Paso, Fremont, Huerfano and 4 more42 hr
May 4, 12:51 AM MDTWinter Storm WarningBOUAdams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 10 more61 hr
Apr 29, 12:34 PM MDTWinter Storm WarningPUBAlamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more58 hr
Mar 4, 11:03 PM MSTWinter Storm WarningBOUBoulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more46 hr
Feb 23, 12:44 PM MSTWinter Storm WarningBOUBoulder, Grand, Jackson, Larimer59 hr
Feb 23, 11:53 AM MSTWinter Storm WarningGJTMoffat, Routt57 hr
Feb 19, 10:48 AM MSTWinter Storm WarningPUBConejos, Mineral, Rio Grande36 hr
Feb 15, 12:24 PM MSTWinter Storm WarningBOUGrand, Jackson4 days
Feb 15, 12:21 PM MSTWinter Storm WarningGJTArchuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more4 days
Feb 15, 11:56 AM MSTWinter Storm WarningPUBChaffee, Conejos, Lake, Mineral, Rio Grande, Saguache3 days
Feb 10, 12:12 PM MSTWinter Storm WarningGJTMoffat, Routt48 hr

Nearby

Alerts in force nowTornadoes on recordThe 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.