Alert archive / Colorado / Pitkin County

Weather alerts in Pitkin County, Colorado, 2022

134 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pitkin County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
134
Warnings
28
Watches
51
Advisories
46
Busiest month
August25 alerts
Busiest day
August 15, 20225 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Pitkin County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings010%
Flash flood warnings7186%20%

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Junction, CO: severe thunderstorm warnings29583%1338%17 min
NWS Grand Junction, CO: flash flood warnings611280%3863%45 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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 3, 2:19 PM MSTWinter Storm WarningGJT3 days
Jan 3, 8:37 PM MSTWinter Storm WatchGJT6 hr
Jan 4, 2:13 AM MSTWinter Weather AdvisoryGJT64 hr
Jan 7, 2:55 AM MSTWinter Weather AdvisoryGJT38 hr
Jan 10, 11:52 AM MSTAreal Flood AdvisoryGJT60 hr
Jan 13, 3:39 PM MSTAreal Flood AdvisoryGJT4 days
Jan 21, 10:48 PM MSTDense Fog AdvisoryGJT12 hr
Jan 28, 3:30 PM MSTAreal Flood AdvisoryGJT3 days
Feb 1, 12:46 PM MSTAreal Flood AdvisoryGJT7 days
Feb 11, 2:13 PM MSTAreal Flood AdvisoryGJT3 days
Feb 16, 12:47 PM MSTSnow Squall WarningGJT28 min
Feb 16, 1:20 PM MSTSnow Squall WarningGJT25 min
Feb 16, 2:07 PM MSTSnow Squall WarningGJT23 min
Feb 16, 2:34 PM MSTSnow Squall WarningGJT26 min
Feb 20, 3:31 PM MSTWinter Storm WarningGJT4 days
Feb 20, 3:31 PM MSTWinter Weather AdvisoryGJT4 days
Feb 21, 9:53 AM MSTWinter Storm WatchGJT17 hr
Mar 3, 2:13 PM MSTWinter Weather AdvisoryGJT4 days
Mar 8, 3:26 AM MSTWinter Weather AdvisoryGJT65 hr
Mar 11, 1:06 PM MSTAreal Flood AdvisoryGJT53 hr
Mar 27, 2:43 PM MDTWinter Weather AdvisoryGJT69 hr
Apr 4, 3:11 AM MDTWind AdvisoryGJT42 hr
Apr 4, 3:19 AM MDTWinter Weather AdvisoryGJT45 hr
Apr 10, 2:31 PM MDTWind AdvisoryGJT39 hr
Apr 10, 2:31 PM MDTWinter Storm WatchGJT12 hr
Apr 10, 2:31 PM MDTWinter Weather AdvisoryGJT55 hr
Apr 11, 2:40 AM MDTWinter Storm WarningGJT56 hr
Apr 11, 6:46 PM MDTHigh Wind WarningGJT11 hr
Apr 13, 10:24 AM MDTWinter Weather AdvisoryGJT14 hr
Apr 18, 3:30 AM MDTWind AdvisoryGJT42 hr
Apr 22, 3:15 AM MDTWinter Weather AdvisoryGJT45 hr
Apr 24, 7:32 AM MDTWinter Weather AdvisoryGJT22 hr
Apr 29, 1:23 AM MDTWind AdvisoryGJT20 hr
May 6, 2:21 PM MDTWind AdvisoryGJT31 hr
May 7, 3:10 AM MDTWind AdvisoryGJT54 hr
May 8, 9:47 PM MDTHigh Wind WarningGJT3 hr
May 9, 2:04 PM MDTWind AdvisoryGJT30 hr
May 10, 2:50 AM MDTWind AdvisoryGJT42 hr
May 18, 2:46 PM MDTWinter Weather AdvisoryGJT63 hr
May 18, 6:28 PM MDTWind AdvisoryGJT28 hr
May 19, 2:50 PM MDTFreeze WatchGJT12 hr
May 20, 2:28 AM MDTFreeze WarningGJT30 hr
May 20, 3:51 PM MDTFreeze WatchGJT23 hr
May 20, 4:26 PM MDTMesoscale DiscussionSPC6 hr
May 21, 2:21 PM MDTFreeze WarningGJT18 hr
May 23, 2:12 PM MDTFreeze WatchGJT24 hr
May 24, 2:01 PM MDTFreeze WarningGJT19 hr
May 27, 1:45 PM MDTWind AdvisoryGJT30 hr
May 29, 11:52 AM MDTMesoscale DiscussionSPC2 hr
May 30, 1:58 PM MDTFreeze WarningGJT19 hr
Jun 12, 2:45 PM MDTHigh Wind WarningGJT32 hr
Jun 18, 9:02 AM MDTFlash Flood WatchGJT13 hr
Jun 19, 8:58 AM MDTFlash Flood WatchGJT12 hr
Jun 23, 4:43 PM MDTSpecial Weather StatementGJT32 min
Jun 23, 7:46 PM MDTFlash Flood WatchGJT3 hr
Jun 24, 2:22 AM MDTFlash Flood WatchGJT16 hr
Jun 26, 1:04 PM MDTFlash Flood WatchGJT7 hr
Jun 29, 1:34 PM MDTFlash Flood WatchGJT4 hr
Jun 29, 2:59 PM MDTFlash Flood WatchGJT28 hr
Jul 1, 2:26 PM MDTFlash Flood WatchGJT4 hr
Jul 3, 1:28 PM MDTFlash Flood WatchGJT3 hr
Jul 4, 1:06 PM MDTFlash Flood WatchGJT26 hr
Jul 5, 3:29 PM MDTAreal Flood AdvisoryGJT3 hr
Jul 6, 1:35 PM MDTFlash Flood WatchGJT6 hr
Jul 13, 5:41 PM MDTSpecial Weather StatementGJT49 min
Jul 14, 1:29 PM MDTSpecial Weather StatementGJT31 min
Jul 14, 2:05 PM MDTFlood WatchGJT32 hr
Jul 15, 5:22 PM MDTSpecial Weather StatementGJT23 min
Jul 15, 5:57 PM MDTSpecial Weather StatementGJT33 min
Jul 16, 12:03 PM MDTFlash Flood WatchGJT2 hr
Jul 19, 4:52 PM MDTFlash Flood WatchGJT4 hr
Jul 20, 4:25 PM MDTSpecial Weather StatementGJT35 min
Jul 20, 4:52 PM MDTFlash Flood Warning Considerable damage threatGJT53 min
Jul 23, 11:56 AM MDTFlash Flood WatchGJT8 hr
Jul 24, 2:39 AM MDTFlash Flood WatchGJT16 hr
Jul 26, 12:20 PM MDTFlash Flood WatchGJT4 hr
Jul 27, 3:23 PM MDTFlood WatchGJT31 hr
Jul 29, 7:51 AM MDTFlash Flood WatchGJT13 hr
Jul 30, 3:01 PM MDTFlash Flood WatchGJT4 hr
Jul 30, 5:19 PM MDTFlash Flood WarningGJT3 hr
Aug 1, 11:43 AM MDTFlash Flood WatchGJT9 hr
Aug 1, 5:26 PM MDTFlash Flood WarningGJT2 hr
Aug 2, 9:58 PM MDTFlash Flood WatchGJT2 hr
Aug 10, 4:58 PM MDTFlash Flood WatchGJT3 hr
Aug 11, 4:27 PM MDTFlash Flood WatchGJT3 hr
Aug 13, 12:37 PM MDTFlash Flood WatchGJT6 hr
Aug 14, 12:09 PM MDTFlash Flood WatchGJT9 hr
Aug 14, 8:42 PM MDTFlash Flood WatchGJT3 hr
Aug 15, 3:18 AM MDTFlash Flood WatchGJT14 hr
Aug 15, 4:32 PM MDTAreal Flood AdvisoryGJT55 min
Aug 15, 5:11 PM MDTFlash Flood Warning Considerable damage threatGJT2 hr
Aug 15, 5:20 PM MDTFlash Flood WarningGJT3 hr
Aug 15, 7:36 PM MDTFlash Flood WatchGJT2 hr
Aug 16, 12:50 PM MDTFlash Flood WatchGJT6 hr
Aug 19, 2:46 AM MDTFlash Flood WatchGJT16 hr
Aug 19, 2:39 PM MDTFlash Flood WarningGJT3 hr
Aug 20, 10:52 AM MDTFlash Flood WatchGJT9 hr
Aug 20, 1:34 PM MDTAreal Flood AdvisoryGJT3 hr
Aug 21, 2:34 AM MDTFlash Flood WatchGJT11 hr
Aug 21, 3:21 PM MDTFlash Flood WatchGJT2 hr
Aug 25, 1:03 PM MDTFlash Flood WatchGJT5 hr
Aug 26, 12:08 PM MDTFlash Flood WatchGJT6 hr
Aug 27, 2:59 PM MDTFlash Flood WarningGJT3 hr
Aug 28, 3:32 PM MDTFlash Flood WatchGJT3 hr
Aug 28, 5:20 PM MDTSpecial Weather StatementGJT25 min
Sep 14, 4:20 PM MDTFlash Flood WatchGJT2 hr
Sep 19, 1:49 PM MDTFlood WatchGJT3 days
Oct 13, 3:19 AM MDTFreeze WatchGJT11 hr
Oct 13, 2:10 PM MDTFreeze WarningGJT19 hr
Oct 21, 3:06 PM MDTWind AdvisoryGJT45 hr
Oct 21, 3:10 PM MDTWinter Storm WatchGJT11 hr
Oct 22, 2:26 AM MDTWinter Storm WarningGJT49 hr
Oct 25, 2:10 PM MDTWinter Weather AdvisoryGJT49 hr
Nov 1, 2:08 PM MDTWinter Weather AdvisoryGJT64 hr
Nov 4, 2:05 PM MDTWinter Weather AdvisoryGJT47 hr
Nov 8, 2:54 AM MSTWinter Weather AdvisoryGJT57 hr
Nov 8, 1:45 PM MSTWind AdvisoryGJT27 hr
Nov 27, 1:27 PM MSTWinter Storm WarningGJT52 hr
Nov 27, 1:27 PM MSTWinter Weather AdvisoryGJT46 hr
Nov 30, 3:05 PM MSTWinter Storm WatchGJT12 hr
Dec 1, 2:58 AM MSTWinter Storm WarningGJT38 hr
Dec 1, 2:58 AM MSTWinter Weather AdvisoryGJT38 hr
Dec 4, 2:24 PM MSTWinter Weather AdvisoryGJT4 days
Dec 11, 2:55 AM MSTWinter Weather AdvisoryGJT4 days
Dec 15, 7:13 AM MSTWinter Weather AdvisoryGJT4 hr
Dec 17, 3:16 PM MSTAreal Flood AdvisoryGJT9 days
Dec 19, 11:45 AM MSTWind Chill WatchGJT27 hr
Dec 20, 3:46 AM MSTWinter Storm WatchGJT11 hr
Dec 20, 2:41 PM MSTWind Chill WarningGJT61 hr
Dec 20, 2:41 PM MSTWinter Storm WarningGJT45 hr
Dec 23, 3:14 AM MSTAreal Flood AdvisoryGJT4 days
Dec 26, 1:56 PM MSTWinter Weather AdvisoryGJT63 hr
Dec 29, 1:58 PM MSTWinter Storm WatchGJT13 hr
Dec 29, 1:58 PM MSTWinter Storm WarningGJT4 days

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20212023

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. Warning verification from the Mesonet's Cow. Rebuilt daily.