Alert archive / Utah / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Utah, 2011
99 severe thunderstorm warnings in 2011. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 99
- Busiest month
- July24 severe thunderstorm warnings
- Busiest day
- April 21, 201114 severe thunderstorm warnings
Over time
By month
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 | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 6:03 PM MST | Severe Thunderstorm Warning | SLC | Tooele | 12 min |
| Apr 21, 11:12 AM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 48 min |
| Apr 21, 12:12 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 48 min |
| Apr 21, 12:29 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 46 min |
| Apr 21, 12:37 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Tooele | 23 min |
| Apr 21, 12:43 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Weber | 17 min |
| Apr 21, 12:52 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache, Davis, Morgan, Tooele, Weber | 23 min |
| Apr 21, 12:55 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Morgan, Salt Lake, Tooele, Utah | 35 min |
| Apr 21, 1:12 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache, Davis, Morgan, Salt Lake, Tooele and 1 more | 48 min |
| Apr 21, 1:24 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Salt Lake, Tooele, Utah | 36 min |
| Apr 21, 1:45 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache, Davis, Morgan, Rich, Salt Lake and 3 more | 30 min |
| Apr 21, 2:14 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Morgan, Rich, Summit | 46 min |
| Apr 21, 2:16 PM MDT | Severe Thunderstorm Warning | SLC | Carbon | 29 min |
| Apr 21, 2:41 PM MDT | Severe Thunderstorm Warning | SLC | Rich | 35 min |
| Apr 21, 2:44 PM MDT | Severe Thunderstorm Warning | SLC | Carbon | 16 min |
| May 22, 3:27 PM MDT | Severe Thunderstorm Warning | SLC | Millard | 48 min |
| May 22, 3:43 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Tooele | 47 min |
| May 22, 4:12 PM MDT | Severe Thunderstorm Warning | SLC | Millard | 48 min |
| May 22, 4:44 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 61 min |
| May 22, 4:50 PM MDT | Severe Thunderstorm Warning | SLC | Millard | 55 min |
| May 22, 5:20 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 55 min |
| May 22, 6:11 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Tooele, Utah | 79 min |
| Jun 29, 1:40 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake | 20 min |
| Jun 29, 1:58 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake, Summit | 32 min |
| Jun 29, 2:58 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich | 19 min |
| Jun 29, 3:46 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne | 29 min |
| Jun 29, 3:58 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake | 32 min |
| Jun 29, 4:34 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane | 26 min |
| Jun 29, 5:03 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane, San Juan | 27 min |
| Jun 29, 5:24 PM MDT | Severe Thunderstorm Warning | SLC | Emery, Sanpete, Sevier | 25 min |
| Jun 29, 7:05 PM MDT | Severe Thunderstorm Warning | SLC | Sanpete | 40 min |
| Jun 30, 8:35 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 25 min |
| Jun 30, 8:38 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 37 min |
| Jun 30, 9:01 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 29 min |
| Jun 30, 9:22 AM MDT | Severe Thunderstorm Warning | SLC | Carbon, Emery | 23 min |
| Jun 30, 9:26 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 34 min |
| Jun 30, 9:33 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 27 min |
| Jun 30, 9:46 AM MDT | Severe Thunderstorm Warning | SLC | Emery | 29 min |
| Jun 30, 9:53 AM MDT | Severe Thunderstorm Warning | SLC | Carbon, Emery | 52 min |
| Jun 30, 10:45 AM MDT | Severe Thunderstorm Warning | GJT | Grand, Uintah | 45 min |
| Jun 30, 10:45 AM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne | 19 min |
| Jun 30, 11:28 AM MDT | Severe Thunderstorm Warning | GJT | Uintah | 62 min |
| Jun 30, 12:18 PM MDT | Severe Thunderstorm Warning | GJT | Daggett, Uintah | 42 min |
| Jun 30, 12:41 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 49 min |
| Jul 7, 1:48 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 42 min |
| Jul 7, 2:26 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 34 min |
| Jul 7, 6:49 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Juab, Tooele | 41 min |
| Jul 7, 7:31 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Juab, Tooele | 29 min |
| Jul 9, 5:31 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 59 min |
| Jul 9, 5:57 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 33 min |
| Jul 12, 3:07 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 38 min |
| Jul 13, 3:24 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 51 min |
| Jul 13, 4:08 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 39 min |
| Jul 13, 4:40 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 54 min |
| Jul 13, 5:04 PM MDT | Severe Thunderstorm Warning | SLC | Carbon | 41 min |
| Jul 13, 8:40 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 50 min |
| Jul 13, 8:46 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 44 min |
| Jul 13, 9:00 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 48 min |
| Jul 18, 9:12 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 48 min |
| Jul 19, 3:00 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 45 min |
| Jul 19, 3:45 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 45 min |
| Jul 19, 4:51 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 35 min |
| Jul 19, 7:40 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 50 min |
| Jul 19, 8:25 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 30 min |
| Jul 19, 8:30 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 45 min |
| Jul 26, 3:26 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Utah | 31 min |
| Jul 27, 4:15 PM MDT | Severe Thunderstorm Warning | SLC | Utah | 30 min |
| Jul 27, 5:45 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne | 30 min |
| Aug 1, 5:39 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 36 min |
| Aug 2, 5:18 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 42 min |
| Aug 2, 5:36 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 24 min |
| Aug 2, 6:09 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 51 min |
| Aug 4, 2:31 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Utah | 29 min |
| Aug 4, 3:27 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 32 min |
| Aug 4, 3:31 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 59 min |
| Aug 4, 3:41 PM MDT | Severe Thunderstorm Warning | SLC | Utah | 64 min |
| Aug 4, 4:07 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Utah | 38 min |
| Aug 4, 4:11 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne, Wasatch | 36 min |
| Aug 4, 4:43 PM MDT | Severe Thunderstorm Warning | SLC | Juab | 62 min |
| Aug 4, 4:56 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 34 min |
| Aug 4, 5:27 PM MDT | Severe Thunderstorm Warning | SLC | Utah | 63 min |
| Aug 15, 3:19 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Wayne | 41 min |
| Aug 15, 4:00 PM MDT | Severe Thunderstorm Warning | SLC | Wayne | 45 min |
| Aug 15, 4:29 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 46 min |
| Aug 15, 4:35 PM MDT | Severe Thunderstorm Warning | SLC | Morgan, Rich, Summit | 40 min |
| Aug 15, 4:46 PM MDT | Severe Thunderstorm Warning | SLC | Wayne | 26 min |
| Aug 15, 5:13 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Emery | 47 min |
| Aug 15, 6:01 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne | 44 min |
| Aug 15, 7:09 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 51 min |
| Aug 16, 2:46 PM MDT | Severe Thunderstorm Warning | GJT | Daggett, Uintah | 44 min |
| Aug 20, 6:39 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake | 21 min |
| Aug 26, 1:12 PM MDT | Severe Thunderstorm Warning | SLC | Rich | 48 min |
| Sep 16, 3:13 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Wayne | 62 min |
| Sep 16, 3:44 PM MDT | Severe Thunderstorm Warning | SLC | Emery, Wayne | 33 min |
| Sep 16, 4:21 PM MDT | Severe Thunderstorm Warning | SLC | Wayne | 38 min |
| Sep 16, 4:39 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 50 min |
| Sep 16, 7:42 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 48 min |
| Sep 16, 8:02 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 43 min |
| Sep 16, 9:27 PM MDT | Severe Thunderstorm Warning | SLC | Iron, Washington | 38 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Tooele County17
- Emery County17
- Box Elder County12
- Salt Lake County12
- Uintah County12
- Duchesne County11
- Carbon County10
- Morgan County9
- Utah County9
- Juab County8
- Davis County8
- Rich County6
- Wayne County6
- Weber County5
- Cache County5
- Garfield County5
- Summit County4
- Millard County3
- Washington County3
- Wasatch County2
- Kane County2
- Sanpete County2
- Grand County2
- Daggett County2
- San Juan County1
- Sevier County1
- Iron County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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. Rebuilt daily.