Alert archive / Colorado / Gunnison County

Weather alerts in Gunnison County, Colorado, 2020

89 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Gunnison County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
89
Warnings
33
Watches
25
Advisories
28
Busiest month
June16 alerts
Busiest day
April 14, 20204 alerts

Over time

By month

Warning verification

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

Gunnison County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings20100%0
Flash flood warnings00

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Junction, CO: severe thunderstorm warnings452251%9635%20 min
NWS Grand Junction, CO: flash flood warnings3233%650%40 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 5, 10:53 PM MSTDense Fog AdvisoryGJT10 hr
Jan 9, 1:28 AM MSTDense Fog AdvisoryGJT7 hr
Jan 10, 2:20 PM MSTWinter Weather AdvisoryGJT3 days
Jan 16, 2:58 PM MSTWinter Weather AdvisoryGJT29 hr
Jan 24, 12:17 AM MSTDense Fog AdvisoryGJT12 hr
Feb 1, 4:02 AM MSTWinter Storm WatchGJT23 hr
Feb 2, 2:47 AM MSTWinter Weather AdvisoryGJT63 hr
Feb 4, 2:23 PM MSTWinter Storm WatchGJT12 hr
Feb 5, 2:19 AM MSTWinter Storm WarningGJT3 days
Feb 5, 2:19 AM MSTWinter Weather AdvisoryGJT63 hr
Feb 8, 2:08 PM MSTWinter Weather AdvisoryGJT40 hr
Feb 14, 1:22 PM MSTWinter Storm WatchGJT22 hr
Feb 15, 3:10 AM MSTWinter Weather AdvisoryGJT53 hr
Feb 21, 3:22 AM MSTWinter Weather AdvisoryGJT59 hr
Feb 24, 8:07 AM MSTSnow Squall WarningGJT38 min
Mar 17, 2:29 PM MDTWinter Weather AdvisoryGJT64 hr
Apr 11, 1:51 PM MDTFreeze WatchGJT13 hr
Apr 11, 1:51 PM MDTFreeze WatchGJT13 hr
Apr 12, 2:53 AM MDTFreeze WarningGJT31 hr
Apr 12, 2:53 AM MDTFreeze WarningGJT55 hr
Apr 14, 4:32 AM MDTFreeze WarningGJT29 hr
Apr 14, 2:43 PM MDTWinter Storm WatchGJT12 hr
Apr 14, 2:43 PM MDTWinter Storm WarningGJT57 hr
Apr 14, 2:43 PM MDTWinter Weather AdvisoryGJT57 hr
Apr 15, 1:39 PM MDTFreeze WatchGJT14 hr
Apr 16, 3:45 AM MDTFreeze WarningGJT30 hr
May 11, 6:08 PM MDTSevere Thunderstorm WarningGJT37 min
May 11, 6:52 PM MDTSpecial Weather StatementGJT38 min
May 16, 3:49 AM MDTFire Weather WatchGJT24 hr
May 16, 2:19 PM MDTFire Weather WatchGJT25 hr
May 17, 3:34 AM MDTRed Flag WarningGJT44 hr
May 17, 2:50 PM MDTRed Flag WarningGJT57 hr
May 19, 2:45 AM MDTFire Weather WatchGJT12 hr
May 19, 2:15 PM MDTRed Flag WarningGJT30 hr
May 22, 3:11 AM MDTFire Weather WatchGJT11 hr
May 22, 2:22 PM MDTRed Flag WarningGJT31 hr
Jun 5, 3:42 AM MDTFlash Flood WatchGJT36 hr
Jun 6, 2:16 AM MDTWind AdvisoryGJT18 hr
Jun 6, 9:48 AM MDTSevere Thunderstorm WatchSPC6 hr
Jun 6, 8:09 PM MDTWind AdvisoryGJT24 hr
Jun 7, 1:46 PM MDTRed Flag WarningGJT30 hr
Jun 8, 2:34 PM MDTWinter Weather AdvisoryGJT18 hr
Jun 11, 2:39 PM MDTFire Weather WatchGJT37 hr
Jun 13, 3:46 AM MDTFire Weather WatchGJT41 hr
Jun 13, 3:46 AM MDTRed Flag WarningGJT40 hr
Jun 13, 12:54 PM MDTMesoscale DiscussionSPC2 hr
Jun 13, 2:40 PM MDTFire Weather WatchGJT48 hr
Jun 14, 2:27 PM MDTRed Flag WarningGJT31 hr
Jun 14, 2:27 PM MDTRed Flag WarningGJT55 hr
Jun 16, 3:02 AM MDTRed Flag WarningGJT41 hr
Jun 27, 2:22 PM MDTWind AdvisoryGJT51 hr
Jun 29, 2:14 PM MDTFire Weather WatchGJT7 hr
Jul 4, 2:26 PM MDTFire Weather WatchGJT23 hr
Jul 5, 1:52 PM MDTFire Weather WatchGJT25 hr
Jul 5, 1:52 PM MDTRed Flag WarningGJT55 hr
Jul 6, 2:23 PM MDTRed Flag WarningGJT55 hr
Jul 29, 5:29 PM MDTSevere Thunderstorm WarningGJT31 min
Aug 18, 9:42 AM MDTFire Weather WatchGJT18 hr
Aug 19, 3:51 AM MDTRed Flag WarningGJT17 hr
Aug 19, 12:23 PM MDTFire Weather WatchGJT15 hr
Aug 20, 3:15 AM MDTRed Flag WarningGJT18 hr
Sep 6, 9:38 PM MDTWinter Storm WatchGJT6 hr
Sep 7, 3:36 AM MDTWinter Storm WarningGJT3 days
Sep 7, 3:36 AM MDTWinter Weather AdvisoryGJT50 hr
Sep 25, 2:32 PM MDTRed Flag WarningGJT29 hr
Oct 13, 7:58 PM MDTWind AdvisoryGJT23 hr
Oct 15, 4:11 AM MDTFreeze WarningGJT29 hr
Oct 23, 3:12 AM MDTRed Flag WarningGJT16 hr
Oct 23, 1:36 PM MDTWinter Storm WatchGJT26 hr
Oct 24, 10:11 AM MDTFreeze WarningGJT50 hr
Oct 24, 3:31 PM MDTWinter Storm WatchGJT11 hr
Oct 24, 3:31 PM MDTWinter Storm WarningGJT50 hr
Oct 24, 8:45 PM MDTWinter Weather AdvisoryGJT45 hr
Oct 25, 5:17 PM MDTMesoscale DiscussionSPC4 hr
Nov 5, 1:50 PM MSTWinter Storm WatchGJT25 hr
Nov 6, 3:11 PM MSTWinter Storm WarningGJT3 days
Nov 6, 3:11 PM MSTWinter Weather AdvisoryGJT43 hr
Nov 6, 7:39 PM MSTWind AdvisoryGJT32 hr
Nov 13, 2:02 AM MSTWinter Weather AdvisoryGJT40 hr
Nov 14, 2:57 AM MSTWind AdvisoryGJT15 hr
Nov 14, 7:51 AM MSTSnow Squall WarningGJT24 min
Nov 14, 8:11 AM MSTSnow Squall WarningGJT34 min
Nov 22, 3:15 AM MSTWinter Weather AdvisoryGJT56 hr
Dec 9, 2:14 PM MSTWinter Weather AdvisoryGJT55 hr
Dec 11, 3:20 AM MSTWinter Weather AdvisoryGJT48 hr
Dec 17, 2:36 AM MSTWinter Weather AdvisoryGJT33 hr
Dec 22, 6:38 PM MSTSnow Squall WarningGJT67 min
Dec 22, 7:43 PM MSTSnow Squall WarningGJT47 min
Dec 27, 2:41 PM MSTWinter Weather AdvisoryGJT48 hr

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 archive20192021

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.