Alert archive / Colorado / Moffat County
Weather alerts in Moffat County, Colorado, 2020
137 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Moffat County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 137
- Warnings
- 54
- Watches
- 34
- Advisories
- 39
- Busiest month
- June33 alerts
- Busiest day
- June 6, 202013 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Moffat County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 2 | 75% | 6 | 17% | 18 min |
| 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, 3:18 AM MST | Winter Weather Advisory | GJT | 35 hr |
| Jan 10, 2:20 PM MST | Winter Storm Warning | GJT | 3 days |
| 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 23, 3:38 AM MST | Dense Fog Advisory | GJT | 6 hr |
| Jan 24, 12:17 AM MST | Dense Fog Advisory | GJT | 12 hr |
| Jan 25, 4:58 AM MST | Dense Fog Advisory | GJT | 6 hr |
| Jan 27, 2:51 AM MST | Winter Weather Advisory | GJT | 21 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 Storm Warning | GJT | 53 hr |
| Feb 21, 3:22 AM MST | Winter Weather Advisory | GJT | 59 hr |
| Feb 24, 2:52 AM MST | Winter Weather Advisory | GJT | 24 hr |
| Mar 17, 2:29 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| Apr 1, 2:07 PM MDT | Winter Weather Advisory | GJT | 29 hr |
| Apr 11, 3:01 AM MDT | Winter Weather Advisory | GJT | 33 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 22, 1:38 PM MDT | Winter Weather Advisory | GJT | 32 hr |
| May 1, 12:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| May 2, 9:57 AM MDT | Areal Flood Advisory | GJT | 51 hr |
| May 2, 11:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 2:42 PM MDT | Wind Advisory | GJT | 30 hr |
| May 20, 3:45 AM MDT | Wind Advisory | GJT | 15 hr |
| May 21, 2:11 AM MDT | Freeze Watch | GJT | 12 hr |
| May 21, 1:57 PM MDT | Freeze Warning | GJT | 18 hr |
| May 21, 2:03 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 23, 3:34 AM MDT | Freeze Watch | GJT | 11 hr |
| May 23, 2:06 PM MDT | Freeze Warning | GJT | 18 hr |
| May 29, 2:25 PM MDT | Fire Weather Watch | GJT | 24 hr |
| May 31, 12:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 31, 4:48 PM MDT | Special Weather Statement | GJT | 42 min |
| Jun 1, 2:12 AM MDT | Red Flag Warning | GJT | 18 hr |
| Jun 3, 2:21 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 4, 2:41 AM MDT | Red Flag Warning | GJT | 41 hr |
| Jun 5, 9:26 PM MDT | Severe Thunderstorm Warning | GJT | 34 min |
| Jun 5, 10:01 PM MDT | Special Weather Statement | GJT | 29 min |
| Jun 6, 2:16 AM MDT | Wind Advisory | GJT | 18 hr |
| Jun 6, 7:01 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 12:34 PM MDT | Severe Thunderstorm Warning | GJT | 41 min |
| Jun 6, 12:59 PM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Jun 6, 1:17 PM MDT | Severe Thunderstorm Warning | GJT | 28 min |
| Jun 6, 1:28 PM MDT | Severe Thunderstorm Warning | GJT | 32 min |
| Jun 6, 1:38 PM MDT | Areal Flood Advisory | GJT | 52 min |
| Jun 6, 1:55 PM MDT | Severe Thunderstorm Warning | GJT | 35 min |
| Jun 6, 2:32 PM MDT | Areal Flood Advisory | GJT | 118 min |
| Jun 6, 2:54 PM MDT | Severe Thunderstorm Warning | GJT | 13 min |
| Jun 6, 8:09 PM MDT | Wind Advisory | GJT | 24 hr |
| Jun 7, 11:03 AM MDT | Special Weather Statement | GJT | 27 min |
| Jun 7, 3:00 PM MDT | Special Weather Statement | GJT | 30 min |
| Jun 8, 2:34 PM MDT | Winter Weather Advisory | GJT | 18 hr |
| Jun 8, 2:47 PM MDT | Freeze Warning | GJT | 18 hr |
| Jun 11, 2:39 PM MDT | Fire Weather Watch | GJT | 37 hr |
| Jun 13, 3:37 AM MDT | Wind Advisory | GJT | 16 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, 3:35 AM MDT | Wind Advisory | GJT | 16 hr |
| Jun 26, 1:55 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jun 27, 2:22 PM MDT | Wind Advisory | GJT | 51 hr |
| Jun 30, 1:51 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jul 1, 2:20 PM MDT | Red Flag Warning | GJT | 30 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 11, 3:19 AM MDT | Fire Weather Watch | GJT | 11 hr |
| Jul 11, 2:12 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 12, 2:08 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Jul 12, 1:48 PM MDT | Red Flag Warning | GJT | 54 hr |
| Jul 13, 4:15 PM MDT | Special Weather Statement | GJT | 60 min |
| Aug 4, 2:45 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Aug 4, 2:31 PM MDT | Red Flag Warning | GJT | 53 hr |
| Aug 5, 2:07 PM MDT | Fire Weather Watch | GJT | 13 hr |
| Aug 6, 3:10 AM MDT | Red Flag Warning | GJT | 41 hr |
| Aug 10, 2:40 PM MDT | Red Flag Warning | GJT | 29 hr |
| Aug 11, 3:04 AM MDT | Fire Weather Watch | GJT | 11 hr |
| Aug 11, 2:05 PM MDT | Red Flag Warning | GJT | 30 hr |
| Aug 12, 1:53 AM MDT | Fire Weather Watch | GJT | 13 hr |
| Aug 12, 2:41 PM MDT | Red Flag Warning | GJT | 29 hr |
| 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 |
| Aug 29, 4:37 AM MDT | Fire Weather Watch | GJT | 22 hr |
| Aug 29, 8:10 AM MDT | Flash Flood Watch | GJT | 4 min |
| Aug 29, 8:19 AM MDT | Flash Flood Watch | GJT | 101 min |
| Aug 29, 2:21 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Aug 29, 2:21 PM MDT | Red Flag Warning | GJT | 31 hr |
| Aug 29, 2:59 PM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Aug 30, 2:23 AM MDT | Red Flag Warning | GJT | 43 hr |
| Sep 4, 3:28 PM MDT | Red Flag Warning | GJT | 3 days |
| Sep 5, 2:30 AM MDT | Red Flag Warning | GJT | 67 hr |
| Sep 6, 3:38 AM MDT | Freeze Watch | GJT | 24 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 7, 4:01 AM MDT | Freeze Watch | GJT | 24 hr |
| Sep 8, 3:49 AM MDT | Freeze Warning | GJT | 30 hr |
| Sep 9, 10:15 AM MDT | Freeze Warning | GJT | 23 hr |
| Sep 23, 10:29 AM MDT | Red Flag Warning | GJT | 34 hr |
| Sep 23, 1:18 PM MDT | Fire Weather Watch | GJT | 14 hr |
| Sep 24, 3:00 AM MDT | Red Flag Warning | GJT | 41 hr |
| Sep 25, 2:32 PM MDT | Red Flag Warning | GJT | 29 hr |
| Sep 26, 3:19 PM MDT | Freeze Watch | GJT | 11 hr |
| Sep 27, 2:34 AM MDT | Freeze Warning | GJT | 31 hr |
| Sep 28, 2:48 AM MDT | Freeze Watch | GJT | 12 hr |
| Sep 28, 2:48 PM MDT | Freeze Warning | GJT | 18 hr |
| Oct 9, 2:20 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Oct 9, 2:13 PM MDT | Red Flag Warning | GJT | 30 hr |
| Oct 13, 7:58 PM MDT | Wind Advisory | GJT | 23 hr |
| Oct 14, 4:51 AM MDT | Freeze Watch | GJT | 9 hr |
| Oct 14, 1:55 PM MDT | Freeze Watch | GJT | 14 hr |
| Oct 14, 1:55 PM MDT | Freeze Warning | GJT | 15 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, 3:31 PM MDT | Winter Storm Warning | GJT | 50 hr |
| Oct 24, 8:45 PM MDT | Winter Weather Advisory | GJT | 45 hr |
| Nov 6, 3:11 PM MST | Winter Weather Advisory | GJT | 43 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 22, 3:15 AM MST | Winter Weather Advisory | GJT | 56 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, 2:47 AM MST | Winter Weather Advisory | GJT | 33 hr |
| Dec 22, 3:54 PM MST | Snow Squall Warning | GJT | 36 min |
| Dec 22, 4:22 PM MST | Snow Squall Warning | GJT | 53 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 | 8 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 5 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 24 |
| Cold | |
| Freeze Warning | 9 |
| Freeze Watch | 8 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 29 |
| Fire Weather Watch | 19 |
| 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.