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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: severe thunderstorm warnings | 45 | 22 | 51% | 96 | 35% | 20 min |
| NWS Grand Junction, CO: flash flood warnings | 3 | 2 | 33% | 6 | 50% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 5, 10:53 PM MST | Dense Fog Advisory | GJT | 10 hr |
| Jan 9, 1:28 AM MST | Dense Fog Advisory | GJT | 7 hr |
| Jan 10, 2:20 PM MST | Winter Weather Advisory | GJT | 3 days |
| Jan 16, 2:58 PM MST | Winter Weather Advisory | GJT | 29 hr |
| Jan 24, 12:17 AM MST | Dense Fog Advisory | GJT | 12 hr |
| Feb 1, 4:02 AM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 2, 2:47 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Feb 4, 2:23 PM MST | Winter Storm Watch | GJT | 12 hr |
| Feb 5, 2:19 AM MST | Winter Storm Warning | GJT | 3 days |
| Feb 5, 2:19 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Feb 8, 2:08 PM MST | Winter Weather Advisory | GJT | 40 hr |
| Feb 14, 1:22 PM MST | Winter Storm Watch | GJT | 22 hr |
| Feb 15, 3:10 AM MST | Winter Weather Advisory | GJT | 53 hr |
| Feb 21, 3:22 AM MST | Winter Weather Advisory | GJT | 59 hr |
| Feb 24, 8:07 AM MST | Snow Squall Warning | GJT | 38 min |
| Mar 17, 2:29 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| Apr 11, 1:51 PM MDT | Freeze Watch | GJT | 13 hr |
| Apr 11, 1:51 PM MDT | Freeze Watch | GJT | 13 hr |
| Apr 12, 2:53 AM MDT | Freeze Warning | GJT | 31 hr |
| Apr 12, 2:53 AM MDT | Freeze Warning | GJT | 55 hr |
| Apr 14, 4:32 AM MDT | Freeze Warning | GJT | 29 hr |
| Apr 14, 2:43 PM MDT | Winter Storm Watch | GJT | 12 hr |
| Apr 14, 2:43 PM MDT | Winter Storm Warning | GJT | 57 hr |
| Apr 14, 2:43 PM MDT | Winter Weather Advisory | GJT | 57 hr |
| Apr 15, 1:39 PM MDT | Freeze Watch | GJT | 14 hr |
| Apr 16, 3:45 AM MDT | Freeze Warning | GJT | 30 hr |
| May 11, 6:08 PM MDT | Severe Thunderstorm Warning | GJT | 37 min |
| May 11, 6:52 PM MDT | Special Weather Statement | GJT | 38 min |
| May 16, 3:49 AM MDT | Fire Weather Watch | GJT | 24 hr |
| May 16, 2:19 PM MDT | Fire Weather Watch | GJT | 25 hr |
| May 17, 3:34 AM MDT | Red Flag Warning | GJT | 44 hr |
| May 17, 2:50 PM MDT | Red Flag Warning | GJT | 57 hr |
| May 19, 2:45 AM MDT | Fire Weather Watch | GJT | 12 hr |
| May 19, 2:15 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 22, 3:11 AM MDT | Fire Weather Watch | GJT | 11 hr |
| May 22, 2:22 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 5, 3:42 AM MDT | Flash Flood Watch | GJT | 36 hr |
| Jun 6, 2:16 AM MDT | Wind Advisory | GJT | 18 hr |
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 8:09 PM MDT | Wind Advisory | GJT | 24 hr |
| Jun 7, 1:46 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 8, 2:34 PM MDT | Winter Weather Advisory | GJT | 18 hr |
| Jun 11, 2:39 PM MDT | Fire Weather Watch | GJT | 37 hr |
| Jun 13, 3:46 AM MDT | Fire Weather Watch | GJT | 41 hr |
| Jun 13, 3:46 AM MDT | Red Flag Warning | GJT | 40 hr |
| Jun 13, 12:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 2:40 PM MDT | Fire Weather Watch | GJT | 48 hr |
| Jun 14, 2:27 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 14, 2:27 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jun 16, 3:02 AM MDT | Red Flag Warning | GJT | 41 hr |
| Jun 27, 2:22 PM MDT | Wind Advisory | GJT | 51 hr |
| Jun 29, 2:14 PM MDT | Fire Weather Watch | GJT | 7 hr |
| Jul 4, 2:26 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Jul 5, 1:52 PM MDT | Fire Weather Watch | GJT | 25 hr |
| Jul 5, 1:52 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 6, 2:23 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 29, 5:29 PM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Aug 18, 9:42 AM MDT | Fire Weather Watch | GJT | 18 hr |
| Aug 19, 3:51 AM MDT | Red Flag Warning | GJT | 17 hr |
| Aug 19, 12:23 PM MDT | Fire Weather Watch | GJT | 15 hr |
| Aug 20, 3:15 AM MDT | Red Flag Warning | GJT | 18 hr |
| Sep 6, 9:38 PM MDT | Winter Storm Watch | GJT | 6 hr |
| Sep 7, 3:36 AM MDT | Winter Storm Warning | GJT | 3 days |
| Sep 7, 3:36 AM MDT | Winter Weather Advisory | GJT | 50 hr |
| Sep 25, 2:32 PM MDT | Red Flag Warning | GJT | 29 hr |
| Oct 13, 7:58 PM MDT | Wind Advisory | GJT | 23 hr |
| Oct 15, 4:11 AM MDT | Freeze Warning | GJT | 29 hr |
| Oct 23, 3:12 AM MDT | Red Flag Warning | GJT | 16 hr |
| Oct 23, 1:36 PM MDT | Winter Storm Watch | GJT | 26 hr |
| Oct 24, 10:11 AM MDT | Freeze Warning | GJT | 50 hr |
| Oct 24, 3:31 PM MDT | Winter Storm Watch | GJT | 11 hr |
| Oct 24, 3:31 PM MDT | Winter Storm Warning | GJT | 50 hr |
| Oct 24, 8:45 PM MDT | Winter Weather Advisory | GJT | 45 hr |
| Oct 25, 5:17 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Nov 5, 1:50 PM MST | Winter Storm Watch | GJT | 25 hr |
| Nov 6, 3:11 PM MST | Winter Storm Warning | GJT | 3 days |
| Nov 6, 3:11 PM MST | Winter Weather Advisory | GJT | 43 hr |
| Nov 6, 7:39 PM MST | Wind Advisory | GJT | 32 hr |
| Nov 13, 2:02 AM MST | Winter Weather Advisory | GJT | 40 hr |
| Nov 14, 2:57 AM MST | Wind Advisory | GJT | 15 hr |
| Nov 14, 7:51 AM MST | Snow Squall Warning | GJT | 24 min |
| Nov 14, 8:11 AM MST | Snow Squall Warning | GJT | 34 min |
| Nov 22, 3:15 AM MST | Winter Weather Advisory | GJT | 56 hr |
| Dec 9, 2:14 PM MST | Winter Weather Advisory | GJT | 55 hr |
| Dec 11, 3:20 AM MST | Winter Weather Advisory | GJT | 48 hr |
| Dec 17, 2:36 AM MST | Winter Weather Advisory | GJT | 33 hr |
| Dec 22, 6:38 PM MST | Snow Squall Warning | GJT | 67 min |
| Dec 22, 7:43 PM MST | Snow Squall Warning | GJT | 47 min |
| Dec 27, 2:41 PM MST | Winter Weather Advisory | GJT | 48 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 2 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 1 |
| Flooding | |
| Flash Flood Watch | 1 |
| Winter | |
| Snow Squall Warning | 5 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 19 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 15 |
| Fire Weather Watch | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.