Alert archive / Utah / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Utah, 1999
88 severe thunderstorm warnings in 1999. 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 1999. Tap one for its archive.
- Severe Thunderstorm Warnings
- 88
- Busiest month
- August28 severe thunderstorm warnings
- Busiest day
- June 17, 19999 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 |
|---|---|---|---|---|
| Apr 28, 2:57 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 33 min |
| Apr 28, 3:56 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich | 34 min |
| May 3, 5:56 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 19 min |
| May 23, 2:43 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 32 min |
| May 23, 3:15 PM MDT | Severe Thunderstorm Warning | SLC | Tooele | 30 min |
| May 23, 4:15 PM MDT | Severe Thunderstorm Warning | SLC | Davis | 30 min |
| May 23, 4:46 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 29 min |
| May 23, 5:13 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 32 min |
| May 23, 5:49 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 26 min |
| May 23, 6:10 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 5 min |
| May 23, 6:19 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 26 min |
| May 25, 5:24 PM MDT | Severe Thunderstorm Warning | SLC | Summit | 51 min |
| May 25, 6:03 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache | 42 min |
| May 25, 6:58 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 32 min |
| Jun 15, 4:30 PM MDT | Severe Thunderstorm Warning | GJT | Grand, Uintah | 45 min |
| Jun 17, 1:33 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 27 min |
| Jun 17, 1:45 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Wayne | 30 min |
| Jun 17, 2:15 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Emery | 45 min |
| Jun 17, 2:43 PM MDT | Severe Thunderstorm Warning | SLC | Cache | 47 min |
| Jun 17, 3:01 PM MDT | Severe Thunderstorm Warning | SLC | Cache | 44 min |
| Jun 17, 3:01 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 44 min |
| Jun 17, 3:24 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 51 min |
| Jun 17, 4:22 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 53 min |
| Jun 17, 5:31 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 44 min |
| Jul 1, 10:17 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 28 min |
| Jul 15, 5:07 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 58 min |
| Jul 20, 5:01 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne, Summit, Wasatch | 44 min |
| Jul 27, 7:05 PM MDT | Severe Thunderstorm Warning | SLC | Kane, San Juan | 40 min |
| Jul 27, 7:45 PM MDT | Severe Thunderstorm Warning | SLC | Kane, San Juan | 30 min |
| Jul 28, 1:40 AM MDT | Severe Thunderstorm Warning | GJT | San Juan | 60 min |
| Jul 28, 7:19 PM MDT | Severe Thunderstorm Warning | SLC | Rich | 41 min |
| Jul 29, 4:22 PM MDT | Severe Thunderstorm Warning | SLC | Cache | 53 min |
| Aug 2, 8:16 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 44 min |
| Aug 4, 5:46 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 29 min |
| Aug 11, 12:48 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Weber | 57 min |
| Aug 11, 12:48 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 57 min |
| Aug 11, 1:46 PM MDT | Severe Thunderstorm Warning | SLC | Morgan, Summit | 59 min |
| Aug 11, 2:19 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 56 min |
| Aug 11, 2:19 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake | 56 min |
| Aug 11, 3:09 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Weber | 51 min |
| Aug 11, 3:10 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 60 min |
| Aug 11, 3:33 PM MDT | Severe Thunderstorm Warning | GJT | Grand, Uintah | 27 min |
| Aug 11, 6:30 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 30 min |
| Aug 15, 12:41 PM MDT | Severe Thunderstorm Warning | SLC | Kane, Washington | 34 min |
| Aug 15, 1:06 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 24 min |
| Aug 15, 3:30 PM MDT | Severe Thunderstorm Warning | GJT | San Juan | 60 min |
| Aug 21, 12:32 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 63 min |
| Aug 21, 2:17 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 48 min |
| Aug 21, 5:45 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane, San Juan | 60 min |
| Aug 27, 2:51 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 39 min |
| Aug 27, 3:29 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 31 min |
| Aug 27, 8:09 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 66 min |
| Aug 28, 6:06 PM MDT | Severe Thunderstorm Warning | SLC | Davis | 34 min |
| Aug 28, 6:30 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 30 min |
| Aug 30, 12:48 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 57 min |
| Aug 30, 1:38 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Cache | 67 min |
| Aug 30, 2:02 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Davis, Salt Lake, Tooele, Weber | 58 min |
| Aug 30, 3:09 PM MDT | Severe Thunderstorm Warning | SLC | Utah, Wasatch | 36 min |
| Aug 30, 7:36 PM MDT | Severe Thunderstorm Warning | GJT | Daggett, Uintah | 44 min |
| Aug 31, 1:38 AM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich | 32 min |
| Sep 2, 1:39 PM MDT | Severe Thunderstorm Warning | GJT | Grand, Uintah | 51 min |
| Sep 2, 6:35 PM MDT | Severe Thunderstorm Warning | GJT | Daggett, Uintah | 60 min |
| Sep 3, 2:11 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake | 39 min |
| Sep 3, 2:12 PM MDT | Severe Thunderstorm Warning | SLC | Tooele, Utah | 48 min |
| Sep 3, 2:55 PM MDT | Severe Thunderstorm Warning | SLC | Utah | 50 min |
| Sep 3, 3:53 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 62 min |
| Sep 11, 4:48 AM MDT | Severe Thunderstorm Warning | SLC | Washington | 32 min |
| Sep 11, 5:43 AM MDT | Severe Thunderstorm Warning | SLC | Iron | 32 min |
| Sep 11, 6:14 AM MDT | Severe Thunderstorm Warning | SLC | Iron | 26 min |
| Sep 14, 3:49 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 26 min |
| Sep 14, 3:51 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 24 min |
| Sep 14, 4:07 PM MDT | Severe Thunderstorm Warning | SLC | Beaver, Iron | 28 min |
| Sep 14, 4:21 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane | 39 min |
| Sep 14, 7:24 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 66 min |
| Sep 14, 8:18 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 32 min |
| Sep 15, 4:21 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 24 min |
| Sep 16, 2:05 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 40 min |
| Sep 16, 2:45 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 30 min |
| Sep 16, 3:15 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 30 min |
| Sep 16, 3:51 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 39 min |
| Sep 16, 4:22 PM MDT | Severe Thunderstorm Warning | GJT | San Juan | 63 min |
| Sep 16, 4:29 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 21 min |
| Sep 16, 4:49 PM MDT | Severe Thunderstorm Warning | SLC | Kane | 41 min |
| Sep 16, 6:07 PM MDT | Severe Thunderstorm Warning | GJT | San Juan | 48 min |
| Sep 19, 4:10 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 50 min |
| Sep 19, 7:50 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 40 min |
| Sep 19, 8:30 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 30 min |
| Sep 19, 9:00 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 45 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Box Elder County18
- Kane County15
- Weber County11
- Davis County9
- Garfield County9
- Tooele County7
- Cache County7
- Grand County7
- Uintah County7
- San Juan County7
- Morgan County6
- Iron County5
- Salt Lake County5
- Rich County3
- Summit County3
- Utah County3
- Duchesne County2
- Wasatch County2
- Washington County2
- Daggett County2
- Wayne County1
- Carbon County1
- Emery County1
- Beaver County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.