Weather alerts in Utah, 1999
133 weather alerts in 1999, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1999. Tap one for its archive.
- Alerts
- 133
- Warnings
- 131
- Watches
- 2
- Advisories
- 0
- Busiest month
- August44 alerts
- Busiest day
- August 11, 199911 alerts
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 6, 4:42 PM MDT | Flash Flood Warning | SLC | Garfield | 78 min |
| Jul 7, 3:43 PM MDT | Flash Flood Warning | GJT | Uintah | 3 hr |
| Jul 7, 6:20 PM MDT | Flash Flood Warning | SLC | Washington | 60 min |
| Jul 7, 7:20 PM MDT | Flash Flood Warning | SLC | Washington | 30 min |
| Jul 8, 4:21 AM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Jul 10, 2:55 PM MDT | Flash Flood Warning | SLC | Kane | 95 min |
| Jul 10, 5:15 PM MDT | Flash Flood Warning | SLC | Kane | 2 hr |
| Jul 10, 7:55 PM MDT | Flash Flood Warning | SLC | Kane | 3 hr |
| Jul 13, 5:00 PM MDT | Flash Flood Warning | SLC | Kane | 90 min |
| Jul 14, 2:41 PM MDT | Flash Flood Warning | SLC | Carbon, Emery | 2 hr |
| Jul 14, 2:41 PM MDT | Flash Flood Warning | SLC | Carbon, Emery | 34 min |
| Jul 14, 7:54 PM MDT | Flash Flood Warning | SLC | Emery | 3 hr |
| Jul 14, 10:55 PM MDT | Flash Flood Warning | SLC | Emery | 3 hr |
| Jul 15, 5:07 PM MDT | Severe Thunderstorm Warning | GJT | Grand | 58 min |
| Jul 15, 5:59 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Jul 15, 9:03 PM MDT | Flash Flood Warning | SLC | Washington | 117 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 27, 8:15 PM MDT | Flash Flood Warning | SLC | Kane, San Juan | 105 min |
| Jul 27, 9:50 PM MDT | Flash Flood Warning | SLC | Kane, San Juan | 70 min |
| Jul 28, 1:40 AM MDT | Severe Thunderstorm Warning | GJT | San Juan | 60 min |
| Jul 28, 5:29 PM MDT | Flash Flood Warning | SLC | Washington | 4 hr |
| Jul 28, 6:00 PM MDT | Flash Flood Warning | SLC | Summit | 3 hr |
| Jul 28, 7:19 PM MDT | Severe Thunderstorm Warning | SLC | Rich | 41 min |
| Jul 28, 9:57 PM MDT | Flash Flood Warning | SLC | Washington | 2 hr |
| Jul 29, 4:22 PM MDT | Severe Thunderstorm Warning | SLC | Cache | 53 min |
| Jul 30, 11:34 AM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 86 min |
| Jul 30, 11:48 AM MDT | Flash Flood Warning | SLC | Emery | 87 min |
| Jul 30, 12:01 PM MDT | Flash Flood Warning | GJT | San Juan | 3 hr |
| Jul 30, 2:56 PM MDT | Flash Flood Warning | GJT | Grand, San Juan | 3 hr |
| Jul 30, 3:00 PM MDT | Flash Flood Warning | SLC | Kane | 90 min |
| Jul 30, 6:20 PM MDT | Flash Flood Warning | SLC | Carbon, Emery | 2 hr |
| Jul 31, 7:35 PM MDT | Flash Flood Warning | SLC | Kane | 85 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 5, 1:35 PM MDT | Flash Flood Warning | GJT | Grand, San Juan | 3 hr |
| Aug 9, 1:10 PM MDT | Flash Flood Warning | GJT | Grand, Uintah | 3 hr |
| 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, 2:15 PM MDT | Severe Thunderstorm Watch | SPC | Carbon, Daggett, Duchesne, Emery, Morgan, Rich and 6 more | 5 hr |
| 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, 3:42 PM MDT | Tornado Warning | SLC | Box Elder | 33 min |
| Aug 11, 4:04 PM MDT | Tornado Warning | SLC | Box Elder, Cache | 26 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 19, 3:54 PM MDT | Flash Flood Warning | SLC | Garfield | 96 min |
| Aug 19, 5:30 PM MDT | Flash Flood Warning | SLC | Garfield | 90 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, 2:51 PM MDT | Flash Flood Warning | SLC | Kane | 84 min |
| Aug 21, 3:35 PM MDT | Flash Flood Warning | SLC | Washington | 85 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, 4:58 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 3 hr |
| 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 29, 3:16 PM MDT | Flash Flood Warning | SLC | Kane | 74 min |
| Aug 29, 6:40 PM MDT | Flash Flood Warning | SLC | Garfield | 50 min |
| Aug 29, 8:14 PM MDT | Flash Flood Warning | SLC | Washington | 61 min |
| Aug 30, 12:30 PM MDT | Severe Thunderstorm Watch | SPC | Beaver, Box Elder, Cache, Davis, Garfield, Iron and 13 more | 8 hr |
| 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, 4:10 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| 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, 3:57 AM MDT | Flash Flood Warning | SLC | Kane, Washington | 63 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, 1:47 PM MDT | Flash Flood Warning | SLC | Garfield, Iron | 88 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, 3:20 PM MDT | Flash Flood Warning | SLC | Iron | 55 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 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 | 88 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 2 |
| Flooding | |
| Flash Flood Warning | 41 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kane County28
- Box Elder County21
- Garfield County17
- Washington County14
- Weber County12
- San Juan County12
- Davis County10
- Grand County10
- Uintah County10
- Cache County9
- Tooele County8
- Iron County8
- Morgan County8
- Emery County8
- Salt Lake County7
- Rich County5
- Summit County5
- Carbon County5
- Utah County5
- Duchesne County3
- Wasatch County3
- Daggett County3
- Wayne County2
- Sanpete County2
- Beaver County2
- Juab County1
- Millard County1
- Piute County1
- Sevier 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.