Alert archive / Colorado / Boulder County

Weather alerts in Boulder County, Colorado, 2018

124 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Boulder County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
124
Warnings
43
Watches
21
Advisories
40
Busiest month
May19 alerts
Busiest day
June 19, 20187 alerts

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.

IssuedProductOfficeLasted
Jan 6, 3:35 AM MSTWinter Weather AdvisoryBOU25 hr
Jan 9, 4:19 AM MSTWinter Weather AdvisoryBOU44 hr
Jan 11, 10:44 AM MSTWinter Weather AdvisoryBOU28 hr
Jan 15, 6:46 AM MSTWinter Weather AdvisoryBOU6 hr
Jan 19, 1:54 PM MSTWinter Storm WatchBOU16 hr
Jan 20, 5:24 AM MSTWinter Storm WarningBOU36 hr
Jan 30, 7:05 PM MSTHigh Wind WarningBOU8 hr
Feb 2, 4:13 PM MSTWinter Weather AdvisoryBOU43 hr
Feb 4, 2:26 PM MSTWinter Weather AdvisoryBOU37 hr
Feb 5, 4:32 PM MSTWinter Storm WarningBOU11 hr
Feb 6, 3:16 AM MSTWinter Weather AdvisoryBOU7 hr
Feb 9, 3:18 PM MSTWinter Weather AdvisoryBOU26 hr
Feb 9, 5:37 PM MSTDense Fog AdvisoryBOU3 hr
Feb 14, 3:19 AM MSTWinter Storm WarningBOU39 hr
Feb 15, 3:52 PM MSTHigh Wind WatchBOU17 hr
Feb 16, 9:13 AM MSTHigh Wind WarningBOU49 hr
Feb 18, 2:01 PM MSTWinter Weather AdvisoryBOU34 hr
Feb 19, 11:42 PM MSTWind Chill AdvisoryBOU8 hr
Mar 3, 3:03 PM MSTWinter Weather AdvisoryBOU41 hr
Mar 3, 3:17 PM MSTFire Weather WatchBOU19 hr
Mar 3, 3:17 PM MSTRed Flag WarningBOU28 hr
Mar 4, 9:49 AM MSTRed Flag WarningBOU32 hr
Mar 15, 3:45 AM MDTWinter Weather AdvisoryBOU25 hr
Mar 15, 3:54 AM MDTHigh Wind WatchBOU11 hr
Mar 17, 2:40 PM MDTWinter Weather AdvisoryBOU37 hr
Mar 18, 3:50 PM MDTSpecial Weather StatementBOU40 min
Mar 22, 4:43 AM MDTWinter Weather AdvisoryBOU37 hr
Mar 26, 4:27 AM MDTWinter Weather AdvisoryBOU24 hr
Mar 28, 4:19 AM MDTWinter Weather AdvisoryBOU20 hr
Apr 2, 1:46 PM MDTHigh Wind WarningBOU21 hr
Apr 5, 4:01 AM MDTWinter Weather AdvisoryBOU44 hr
Apr 7, 4:26 AM MDTWinter Storm WarningBOU29 hr
Apr 10, 3:44 AM MDTRed Flag WarningBOU39 hr
Apr 10, 3:44 AM MDTRed Flag WarningBOU65 hr
Apr 11, 3:08 PM MDTWinter Weather AdvisoryBOU54 hr
Apr 16, 3:45 AM MDTRed Flag WarningBOU42 hr
Apr 17, 4:58 AM MDTHigh Wind WarningBOU16 hr
Apr 19, 4:41 AM MDTWinter Storm WatchBOU11 hr
Apr 19, 3:14 PM MDTWinter Storm WarningBOU28 hr
Apr 19, 3:14 PM MDTWinter Weather AdvisoryBOU44 hr
May 1, 3:40 AM MDTWinter Storm WatchBOU12 hr
May 1, 1:01 PM MDTMesoscale DiscussionSPC119 min
May 1, 3:49 PM MDTWinter Storm WarningBOU44 hr
May 2, 4:56 AM MDTWinter Weather AdvisoryBOU31 hr
May 11, 12:00 PM MDTMesoscale DiscussionSPC2 hr
May 11, 10:58 PM MDTDense Fog AdvisoryBOU10 hr
May 13, 12:22 AM MDTDense Fog AdvisoryBOU9 hr
May 13, 4:41 PM MDTSpecial Weather StatementBOU49 min
May 18, 3:48 AM MDTWinter Storm WatchBOU11 hr
May 18, 11:02 AM MDTFlash Flood WatchBOU30 hr
May 18, 2:29 PM MDTWinter Weather AdvisoryBOU13 hr
May 18, 3:06 PM MDTMesoscale DiscussionSPC114 min
May 18, 3:23 PM MDTAreal Flood AdvisoryBOU52 min
May 18, 4:08 PM MDTFlash Flood WarningBOU64 min
May 22, 4:56 PM MDTSevere Thunderstorm WarningBOU26 min
May 22, 5:37 PM MDTSpecial Weather StatementBOU38 min
May 27, 4:30 PM MDTMesoscale DiscussionSPC2 hr
May 28, 1:39 PM MDTMesoscale DiscussionSPC96 min
May 28, 2:01 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 14, 3:27 AM MDTRed Flag WarningBOU17 hr
Jun 18, 5:44 PM MDTSevere Thunderstorm WarningBOU31 min
Jun 18, 6:12 PM MDTSevere Thunderstorm WarningBOU48 min
Jun 18, 7:24 PM MDTSevere Thunderstorm WarningBOU51 min
Jun 18, 8:16 PM MDTSevere Thunderstorm WarningBOU29 min
Jun 19, 12:06 PM MDTSevere Thunderstorm WarningBOU24 min
Jun 19, 12:25 PM MDTTornado WatchSPC7 hr
Jun 19, 12:29 PM MDTSevere Thunderstorm WarningBOU46 min
Jun 19, 1:54 PM MDTMesoscale DiscussionSPC2 hr
Jun 26, 2:53 PM MDTFire Weather WatchBOU13 hr
Jun 27, 3:39 AM MDTRed Flag WarningBOU42 hr
Jun 28, 2:42 PM MDTRed Flag WarningBOU28 hr
Jul 3, 4:03 AM MDTRed Flag WarningBOU16 hr
Jul 5, 10:16 AM MDTFlash Flood WatchBOU9 hr
Jul 8, 5:51 PM MDTSpecial Weather StatementBOU24 min
Jul 15, 4:14 AM MDTFlash Flood WatchBOU16 hr
Jul 23, 1:00 PM MDTMesoscale DiscussionSPC90 min
Jul 25, 10:41 AM MDTFlash Flood WatchBOU11 hr
Jul 25, 12:48 PM MDTMesoscale DiscussionSPC57 min
Jul 25, 1:22 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 25, 5:08 PM MDTMesoscale DiscussionSPC2 hr
Jul 25, 6:33 PM MDTSevere Thunderstorm WarningBOU42 min
Jul 25, 6:38 PM MDTSevere Thunderstorm WarningBOU52 min
Jul 26, 1:49 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 6:07 PM MDTMesoscale DiscussionSPC113 min
Aug 3, 8:16 PM MDTSpecial Weather StatementBOU44 min
Aug 3, 8:39 PM MDTSevere Thunderstorm WarningBOU51 min
Aug 6, 2:02 PM MDTMesoscale DiscussionSPC88 min
Aug 6, 2:37 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 6, 5:24 PM MDTMesoscale DiscussionSPC66 min
Aug 6, 8:06 PM MDTMesoscale DiscussionSPC54 min
Aug 7, 5:17 PM MDTSevere Thunderstorm WarningBOU43 min
Aug 14, 4:56 PM MDTSevere Thunderstorm WarningBOU22 min
Aug 14, 5:16 PM MDTSevere Thunderstorm WarningBOU29 min
Aug 14, 5:31 PM MDTMesoscale DiscussionSPC119 min
Aug 14, 5:51 PM MDTAreal Flood AdvisoryBOU114 min
Aug 17, 2:56 PM MDTMesoscale DiscussionSPC2 hr
Aug 18, 10:10 PM MDTSevere Thunderstorm WarningBOU15 min
Aug 26, 3:58 AM MDTFire Weather WatchBOU12 hr
Aug 26, 3:35 PM MDTRed Flag WarningBOU26 hr
Sep 4, 11:29 PM MDTAreal Flood AdvisoryBOU91 min
Sep 5, 12:05 AM MDTAreal Flood AdvisoryBOU85 min
Sep 5, 1:05 AM MDTAreal Flood AdvisoryBOU85 min
Sep 11, 3:06 PM MDTRed Flag WarningBOU53 hr
Sep 27, 4:01 PM MDTFire Weather WatchBOU19 hr
Sep 28, 10:32 AM MDTRed Flag WarningBOU32 hr
Oct 7, 2:30 PM MDTFreeze WatchBOU25 hr
Oct 8, 3:01 PM MDTFreeze WarningBOU13 hr
Oct 9, 4:25 AM MDTFreeze WarningBOU30 hr
Oct 9, 3:24 PM MDTWinter Weather AdvisoryBOU30 hr
Oct 10, 2:24 PM MDTWinter Weather AdvisoryBOU34 hr
Oct 10, 2:27 PM MDTFreeze WarningBOU19 hr
Oct 12, 2:20 PM MDTWinter Weather AdvisoryBOU49 hr
Oct 29, 3:56 AM MDTWinter Weather AdvisoryBOU50 hr
Nov 1, 3:02 PM MDTWinter Weather AdvisoryBOU49 hr
Nov 2, 10:35 PM MDTSevere Thunderstorm WarningBOU33 min
Nov 3, 3:32 PM MDTWinter Weather AdvisoryBOU44 hr
Nov 10, 4:18 AM MSTWinter Weather AdvisoryBOU44 hr
Nov 16, 10:36 AM MSTWinter Weather AdvisoryBOU34 hr
Nov 21, 2:50 PM MSTWinter Storm WatchBOU25 hr
Nov 22, 3:49 PM MSTWinter Storm WarningBOU58 hr
Nov 24, 5:39 AM MSTHigh Wind WarningBOU19 hr
Dec 1, 2:47 AM MSTDense Fog AdvisoryBOU4 hr
Dec 18, 10:08 AM MSTWinter Weather AdvisoryBOU31 hr
Dec 30, 1:56 PM MSTWinter Weather AdvisoryBOU27 hr

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 Warning15
Severe Thunderstorm Watch4
Tornado Watch1
Mesoscale Discussion15
Special Weather Statement5
Flooding
Flash Flood Warning1
Flash Flood Watch4
Areal Flood Advisory5
Winter
Winter Storm Warning7
Winter Storm Watch5
Winter Weather Advisory30
Cold
Freeze Warning3
Freeze Watch1
Wind Chill Advisory1
Wind and dust
High Wind Warning5
High Wind Watch2
Fire
Red Flag Warning12
Fire Weather Watch4
Fog and smoke
Dense Fog Advisory4

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 19, 20187alerts
  2. May 18, 20186alerts
  3. July 25, 20184alerts
  4. August 14, 20184alerts
  5. March 3, 20183alerts
  6. April 19, 20183alerts
  7. May 1, 20183alerts
  8. July 26, 20183alerts
  9. August 6, 20183alerts
  10. September 5, 20183alerts

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20172019

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.