Alert archive / Utah / Salt Lake County
Weather alerts in Salt Lake County, Utah, 2025
91 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Salt Lake County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 91
- Warnings
- 23
- Watches
- 7
- Advisories
- 32
- Busiest month
- March16 alerts
- Busiest day
- May 11, 20259 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Salt Lake County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 7 | 0% | 13 | 23% | 18 min |
| 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 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 6, 2:36 PM MST | Wind Advisory | SLC | 45 hr |
| Jan 10, 2:32 PM MST | Winter Weather Advisory | SLC | 29 hr |
| Jan 12, 2:59 AM MST | Special Weather Statement | SLC | 61 min |
| Jan 24, 1:46 PM MST | Winter Weather Advisory | SLC | 33 hr |
| Jan 29, 2:46 PM MST | Winter Storm Watch | SLC | 23 hr |
| Jan 30, 2:15 PM MST | Winter Storm Warning | SLC | 3 days |
| Feb 6, 2:14 AM MST | Wind Advisory | SLC | 40 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 5, 3:03 AM MST | Winter Weather Advisory | SLC | 57 hr |
| Mar 11, 3:26 PM MDT | Wind Advisory | SLC | 51 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 13, 1:38 PM MDT | Special Weather Statement | SLC | 37 min |
| Mar 14, 5:54 PM MDT | Winter Weather Advisory | SLC | 30 hr |
| 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, 4:35 AM MDT | Winter Storm Warning | SLC | 43 hr |
| Mar 17, 8:39 PM MDT | High Wind Warning | SLC | 23 hr |
| Mar 21, 2:50 AM MDT | Winter Weather Advisory | SLC | 37 hr |
| Mar 30, 12:59 PM MDT | Winter Weather Advisory | SLC | 55 hr |
| May 11, 1:40 AM MDT | Wind Advisory | SLC | 46 hr |
| May 11, 12:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 12:59 PM MDT | Severe Thunderstorm Warning | SLC | 31 min |
| May 11, 1:12 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 11, 1:25 PM MDT | Severe Thunderstorm Warning | SLC | 35 min |
| May 11, 2:00 PM MDT | Severe Thunderstorm Warning | SLC | 45 min |
| May 11, 2:38 PM MDT | Severe Thunderstorm Warning | SLC | 37 min |
| May 11, 3:14 PM MDT | Severe Thunderstorm Warning | SLC | 46 min |
| May 11, 4:34 PM MDT | Mesoscale Discussion | SPC | 116 min |
| May 11, 7:51 PM MDT | Special Weather Statement | SLC | 39 min |
| May 17, 1:34 AM MDT | Winter Weather Advisory | SLC | 40 hr |
| May 17, 12:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 2:38 PM MDT | Red Flag Warning | SLC | 4 days |
| Jun 18, 2:07 AM MDT | Heat Advisory | SLC | 45 hr |
| Jun 20, 1:33 AM MDT | Wind Advisory | SLC | 19 hr |
| Jun 20, 2:05 PM MDT | Wind Advisory | SLC | 34 hr |
| Jun 30, 2:19 PM MDT | Heat Advisory | SLC | 34 hr |
| Jul 1, 4:18 PM MDT | Special Weather Statement | SLC | 27 min |
| Jul 2, 4:59 PM MDT | Special Weather Statement | SLC | 46 min |
| Jul 2, 5:07 PM MDT | Severe Thunderstorm Warning | SLC | 23 min |
| Jul 4, 12:20 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 4, 3:23 PM MDT | Special Weather Statement | SLC | 37 min |
| Jul 4, 5:21 PM MDT | Severe Thunderstorm Warning | SLC | 39 min |
| Jul 4, 5:29 PM MDT | Special Weather Statement | SLC | 46 min |
| Jul 14, 2:28 PM MDT | Red Flag Warning | SLC | 33 hr |
| Jul 15, 2:50 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 5:14 PM MDT | Special Weather Statement | SLC | 46 min |
| Jul 15, 5:29 PM MDT | Special Weather Statement | SLC | 46 min |
| Jul 18, 7:45 PM MDT | Special Weather Statement | SLC | 30 min |
| Jul 20, 3:54 PM MDT | Special Weather Statement | SLC | 36 min |
| Jul 21, 9:39 AM MDT | Red Flag Warning | SLC | 11 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 12, 12:36 PM MDT | Red Flag Warning | SLC | 32 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 15, 5:10 PM MDT | Special Weather Statement | SLC | 35 min |
| Aug 15, 6:32 PM MDT | Special Weather Statement | SLC | 28 min |
| Sep 7, 2:23 PM MDT | Special Weather Statement | SLC | 52 min |
| Sep 9, 2:19 PM MDT | Red Flag Warning | SLC | 31 hr |
| Sep 21, 2:12 PM MDT | Special Weather Statement | SLC | 33 min |
| Sep 21, 2:13 PM MDT | Special Weather Statement | SLC | 32 min |
| Sep 21, 2:45 PM MDT | Special Weather Statement | SLC | 45 min |
| Sep 21, 8:10 PM MDT | Special Weather Statement | SLC | 35 min |
| Oct 4, 4:31 AM MDT | Special Weather Statement | SLC | 44 min |
| Oct 4, 6:09 AM MDT | Special Weather Statement | SLC | 51 min |
| Oct 4, 9:37 AM MDT | Areal Flood Advisory | SLC | 3 hr |
| Oct 11, 1:56 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 11, 4:20 PM MDT | High Wind Warning | SLC | 6 hr |
| Oct 11, 5:59 PM MDT | Special Weather Statement | SLC | 46 min |
| Oct 15, 11:47 AM MDT | Special Weather Statement | SLC | 43 min |
| Oct 25, 2:05 PM MDT | Winter Weather Advisory | SLC | 46 hr |
| Nov 22, 11:11 PM MST | Dense Fog Advisory | SLC | 11 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, 10:05 AM MST | High Wind Warning | SLC | 40 hr |
| Dec 16, 2:07 PM MST | Wind Advisory | SLC | 36 hr |
| Dec 19, 9:38 AM MST | Wind Advisory | SLC | 12 hr |
| Dec 23, 1:49 PM MST | Wind Advisory | SLC | 3 days |
| 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 Warning | 7 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 22 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 18 |
| Heat | |
| Heat Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 3 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
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.