Alert archive / Utah / Sevier County
Weather alerts in Sevier County, Utah, 2025
63 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sevier County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 63
- Warnings
- 20
- Watches
- 13
- Advisories
- 20
- Busiest month
- March13 alerts
- Busiest day
- February 12, 20253 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sevier 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 3, 1:49 AM MST | Winter Weather Advisory | SLC | 43 hr |
| Jan 10, 2:32 PM MST | Winter Weather Advisory | SLC | 29 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 12, 2:52 PM MST | Wind Advisory | SLC | 35 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 6, 2:28 AM MST | Wind Advisory | SLC | 18 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 12, 3:06 PM MDT | Winter Weather Advisory | SLC | 3 days |
| Mar 16, 1:32 PM MDT | Winter Weather Advisory | SLC | 58 hr |
| Mar 16, 1:48 PM MDT | Wind Advisory | SLC | 36 hr |
| Mar 17, 8:39 PM MDT | High Wind Warning | SLC | 23 hr |
| Mar 18, 1:58 AM MDT | Wind Advisory | SLC | 18 hr |
| Mar 30, 3:00 AM MDT | Wind Advisory | SLC | 45 hr |
| Mar 30, 12:59 PM MDT | Winter Weather Advisory | SLC | 55 hr |
| Apr 16, 2:30 PM MDT | Winter Weather Advisory | SLC | 61 hr |
| Apr 16, 6:27 PM MDT | Special Weather Statement | SLC | 33 min |
| May 12, 2:00 PM MDT | Wind Advisory | SLC | 31 hr |
| May 17, 1:34 AM MDT | Winter Weather Advisory | SLC | 40 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 |
| Jun 30, 2:28 PM MDT | Red Flag Warning | SLC | 31 hr |
| Jul 1, 2:30 PM MDT | Special Weather Statement | SLC | 45 min |
| Jul 1, 3:07 PM MDT | Special Weather Statement | SLC | 38 min |
| Jul 7, 2:18 PM MDT | Fire Weather Watch | SLC | 23 hr |
| Jul 8, 1:08 PM MDT | Red Flag Warning | SLC | 32 hr |
| Jul 14, 2:28 PM MDT | Red Flag Warning | SLC | 33 hr |
| Jul 15, 4:50 PM MDT | Special Weather Statement | SLC | 40 min |
| Jul 24, 2:42 PM MDT | Fire Weather Watch | SLC | 15 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, 3:55 PM MDT | Special Weather Statement | SLC | 35 min |
| Aug 26, 9:42 AM MDT | Flood Watch | SLC | 13 hr |
| Aug 27, 11:05 AM MDT | Flood Watch | SLC | 10 hr |
| Sep 13, 10:39 AM MDT | Special Weather Statement | SLC | 36 min |
| Sep 13, 11:02 AM MDT | Special Weather Statement | SLC | 28 min |
| Oct 3, 12:54 AM MDT | Wind Advisory | SLC | 19 hr |
| Oct 5, 3:58 PM MDT | Freeze Warning | SLC | 17 hr |
| Oct 8, 1:05 PM MDT | Flood Watch | SLC | 3 days |
| Oct 9, 5:06 PM MDT | Special Weather Statement | SLC | 39 min |
| Oct 9, 5:47 PM MDT | Special Weather Statement | SLC | 43 min |
| Oct 11, 1:56 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| 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 26, 2:04 PM MDT | Freeze Watch | SLC | 13 hr |
| Oct 27, 3:06 AM MDT | Freeze Warning | SLC | 30 hr |
| Nov 29, 1:20 PM MST | Winter Weather Advisory | SLC | 33 hr |
| Dec 4, 12:59 PM MST | Winter Storm Warning | SLC | 49 hr |
| Dec 16, 10:05 AM MST | High Wind Warning | SLC | 40 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 | |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 9 |
| Flooding | |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 12 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 8 |
| Fire Weather Watch | 4 |
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.