Alert archive / Utah / Duchesne County
Weather alerts in Duchesne County, Utah, 2025
67 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Duchesne County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 67
- Warnings
- 15
- Watches
- 12
- Advisories
- 22
- Busiest month
- May12 alerts
- Busiest day
- May 11, 20256 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Duchesne County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 1 | 0% | |||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 5 | 1 | 80% | 3 | 33% | 19 min |
| NWS Grand Junction, CO: severe thunderstorm warnings | 72 | 12 | 83% | 35 | 49% | 16 min |
| NWS Grand Junction, CO: flash flood warnings | 44 | 10 | 77% | 31 | 48% | 73 min |
| NWS Salt Lake City, UT: severe thunderstorm warnings | 57 | 22 | 61% | 155 | 25% | 22 min |
| NWS Salt Lake City, UT: flash flood warnings | 45 | 18 | 60% | 49 | 47% | 68 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 1, 2:05 AM MST | Winter Weather Advisory | SLC | 36 hr |
| Jan 3, 1:49 AM MST | Winter Weather Advisory | SLC | 43 hr |
| Jan 10, 2:32 PM MST | Winter Weather Advisory | SLC | 29 hr |
| Jan 24, 1:46 PM MST | Winter Weather Advisory | SLC | 33 hr |
| Jan 30, 2:15 PM MST | Winter Storm Warning | SLC | 3 days |
| Jan 30, 2:15 PM MST | Winter Weather Advisory | SLC | 69 hr |
| Feb 7, 2:59 AM MST | Winter Weather Advisory | SLC | 20 hr |
| Feb 11, 1:44 PM MST | Winter Storm Watch | SLC | 25 hr |
| Feb 12, 3:01 AM MST | Winter Storm Warning | SLC | 4 days |
| Feb 12, 2:50 PM MST | Winter Weather Advisory | SLC | 50 hr |
| Feb 15, 4:52 PM MST | Winter Weather Advisory | SLC | 67 hr |
| Feb 19, 2:56 PM MST | Winter Weather Advisory | SLC | 32 hr |
| Mar 1, 2:20 PM MST | Winter Weather Advisory | SLC | 69 hr |
| Mar 4, 1:52 PM MST | Winter Storm Watch | SLC | 13 hr |
| Mar 5, 3:03 AM MST | Winter Storm Warning | SLC | 62 hr |
| Mar 11, 3:26 PM MDT | Winter Storm Watch | SLC | 24 hr |
| Mar 12, 3:06 PM MDT | Winter Storm Warning | SLC | 51 hr |
| Mar 16, 1:32 PM MDT | Winter Weather Advisory | SLC | 58 hr |
| Mar 18, 1:58 AM MDT | Wind Advisory | SLC | 18 hr |
| Mar 21, 2:50 AM MDT | Winter Weather Advisory | SLC | 37 hr |
| Mar 29, 1:47 PM MDT | Special Weather Statement | SLC | 28 min |
| Mar 30, 12:59 PM MDT | Winter Weather Advisory | SLC | 55 hr |
| May 11, 12:26 PM MDT | Special Weather Statement | SLC | 49 min |
| May 11, 1:12 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 11, 1:38 PM MDT | Special Weather Statement | SLC | 52 min |
| May 11, 2:29 PM MDT | Special Weather Statement | SLC | 61 min |
| May 11, 3:30 PM MDT | Special Weather Statement | SLC | 60 min |
| May 11, 4:32 PM MDT | Special Weather Statement | SLC | 58 min |
| May 17, 1:34 AM MDT | Winter Weather Advisory | SLC | 40 hr |
| May 17, 1:41 AM MDT | Freeze Watch | SLC | 25 hr |
| May 17, 12:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 2:36 AM MDT | Freeze Watch | SLC | 31 hr |
| May 18, 2:36 AM MDT | Freeze Warning | SLC | 31 hr |
| May 19, 9:54 AM MDT | Freeze Warning | SLC | 24 hr |
| Jun 15, 2:27 AM MDT | Red Flag Warning | SLC | 46 hr |
| Jun 17, 2:38 PM MDT | Red Flag Warning | SLC | 4 days |
| Jun 20, 2:05 PM MDT | Wind Advisory | SLC | 34 hr |
| Jul 9, 3:53 PM MDT | Special Weather Statement | SLC | 37 min |
| Jul 9, 4:37 PM MDT | Special Weather Statement | SLC | 38 min |
| Jul 16, 12:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 5:17 AM MDT | Red Flag Warning | SLC | 9 days |
| Aug 1, 2:29 PM MDT | Fire Weather Watch | SLC | 23 hr |
| Aug 2, 1:42 PM MDT | Red Flag Warning | SLC | 7 days |
| Aug 12, 12:36 PM MDT | Fire Weather Watch | SLC | 25 hr |
| Aug 13, 1:16 PM MDT | Red Flag Warning | SLC | 32 hr |
| Aug 14, 1:40 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 14, 2:51 PM MDT | Special Weather Statement | SLC | 39 min |
| Aug 26, 9:42 AM MDT | Flood Watch | SLC | 13 hr |
| Sep 12, 3:08 PM MDT | Special Weather Statement | SLC | 52 min |
| Sep 16, 12:28 PM MDT | Special Weather Statement | SLC | 47 min |
| Sep 16, 1:14 PM MDT | Special Weather Statement | SLC | 46 min |
| Sep 16, 2:32 PM MDT | Special Weather Statement | SLC | 43 min |
| Sep 16, 3:15 PM MDT | Special Weather Statement | SLC | 45 min |
| Sep 22, 2:35 PM MDT | Special Weather Statement | SLC | 25 min |
| Oct 5, 3:58 PM MDT | Freeze Warning | SLC | 17 hr |
| Oct 8, 1:05 PM MDT | Flood Watch | SLC | 3 days |
| Oct 15, 2:17 PM MDT | Freeze Watch | SLC | 24 hr |
| Oct 15, 2:17 PM MDT | Freeze Warning | SLC | 19 hr |
| Oct 16, 2:08 PM MDT | Freeze Warning | SLC | 19 hr |
| Oct 25, 2:05 PM MDT | Winter Weather Advisory | SLC | 46 hr |
| Nov 29, 1:20 PM MST | Winter Weather Advisory | SLC | 33 hr |
| Dec 3, 1:02 PM MST | Winter Storm Watch | SLC | 24 hr |
| Dec 4, 12:59 PM MST | Winter Storm Warning | SLC | 49 hr |
| Dec 16, 2:07 PM MST | Wind Advisory | SLC | 36 hr |
| Dec 19, 3:19 AM MST | Winter Weather Advisory | SLC | 35 hr |
| Dec 23, 1:12 AM MST | Winter Weather Advisory | SLC | 62 hr |
| Dec 24, 2:01 PM MST | Winter Weather Advisory | SLC | 4 days |
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 Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 15 |
| Flooding | |
| Flood Watch | 2 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 19 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 3 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.