Alert archive / Colorado / Severe Thunderstorm Watches

Severe Thunderstorm Watches in Colorado, 2021

24 severe thunderstorm watches in 2021. 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 severe thunderstorm watches reaches back to 1997.

Severe Thunderstorm Watches by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Severe Thunderstorm Watches
24
Busiest month
May8 severe thunderstorm watches
Busiest day
June 25, 20212 severe thunderstorm watches

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Apr 27, 11:45 AM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Cheyenne, Douglas, Elbert, Kit Carson and 8 more7 hr
May 2, 11:45 AM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Bent, Cheyenne, Crowley, Douglas and 10 more7 hr
May 14, 3:46 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson and 5 more6 hr
May 15, 4:06 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, Douglas, Elbert and 9 more6 hr
May 16, 2:43 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Crowley, Huerfano, Kiowa, Las Animas and 3 more7 hr
May 17, 1:39 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Crowley, Huerfano, Las Animas, Otero and 2 more8 hr
May 21, 4:17 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Logan, Morgan, Phillips, Sedgwick and 3 more6 hr
May 23, 4:07 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Las Animas, Otero, Prowers7 hr
May 30, 11:41 AM MDTSevere Thunderstorm WatchSPCBaca, Bent, Costilla, Crowley, Custer, Huerfano and 3 more8 hr
Jun 12, 2:46 PM MDTSevere Thunderstorm WatchSPCBaca, Las Animas7 hr
Jun 19, 1:44 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Baca, Bent, Cheyenne, Crowley and 17 more7 hr
Jun 24, 3:56 PM MDTSevere Thunderstorm WatchSPCBent, Cheyenne, Kiowa, Kit Carson, Lincoln, Prowers and 2 more6 hr
Jun 25, 1:30 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Kiowa, Prowers10 hr
Jun 25, 2:07 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Lincoln, Washington, Yuma6 hr
Jul 3, 3:33 PM MDTSevere Thunderstorm WatchSPCBent, Cheyenne, Crowley, Elbert, El Paso, Kiowa and 11 more6 hr
Jul 4, 2:37 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more7 hr
Jul 4, 3:01 PM MDTSevere Thunderstorm WatchSPCCheyenne7 hr
Jul 9, 2:16 PM MDTSevere Thunderstorm WatchSPCLogan, Morgan, Phillips, Sedgwick, Washington, Weld and 1 more9 hr
Jul 9, 8:37 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kiowa, Kit Carson, Prowers4 hr
Jul 16, 3:55 PM MDTSevere Thunderstorm WatchSPCPhillips, Sedgwick7 hr
Aug 7, 3:01 PM MDTSevere Thunderstorm WatchSPCBaca, Cheyenne, Kiowa, Prowers7 hr
Aug 14, 3:28 PM MDTSevere Thunderstorm WatchSPCLogan, Phillips, Sedgwick, Washington, Yuma7 hr
Aug 19, 1:14 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Cheyenne, Denver, Elbert, El Paso and 11 more6 hr
Sep 14, 1:55 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, Elbert, El Paso and 10 more7 hr

By county

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

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 25, 20212severe thunderstorm watches
  2. July 4, 20212severe thunderstorm watches
  3. April 27, 20211severe thunderstorm watches
  4. May 2, 20211severe thunderstorm watches
  5. May 14, 20211severe thunderstorm watches
  6. May 15, 20211severe thunderstorm watches
  7. May 16, 20211severe thunderstorm watches
  8. May 17, 20211severe thunderstorm watches
  9. May 21, 20211severe thunderstorm watches
  10. May 23, 20211severe thunderstorm watches
  11. May 30, 20211severe thunderstorm watches
  12. June 12, 20211severe thunderstorm watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.