Alert archive / Wyoming / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Wyoming, 2017
151 severe thunderstorm warnings in 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 151
- Busiest month
- June71 severe thunderstorm warnings
- Busiest day
- June 12, 201723 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 |
|---|---|---|---|---|
| May 8, 4:09 PM MDT | Severe Thunderstorm Warning | SLC | Uinta | 21 min |
| May 8, 6:32 PM MDT | Severe Thunderstorm Warning | RIW | Sublette | 28 min |
| May 15, 3:03 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 39 min |
| May 15, 4:11 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 64 min |
| May 15, 5:14 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 50 min |
| May 15, 5:18 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 42 min |
| May 15, 5:48 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 27 min |
| May 15, 5:49 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 56 min |
| May 15, 5:59 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 26 min |
| May 15, 6:24 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 66 min |
| May 15, 6:43 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 34 min |
| May 15, 6:55 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 65 min |
| May 15, 7:23 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 52 min |
| May 26, 12:57 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 13 min |
| May 26, 1:25 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 20 min |
| May 26, 1:45 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 45 min |
| May 26, 2:29 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 46 min |
| May 26, 3:11 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Carbon | 43 min |
| May 26, 4:08 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 67 min |
| May 26, 6:00 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 40 min |
| May 26, 6:08 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 67 min |
| May 26, 7:39 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 32 min |
| May 30, 2:42 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 19 min |
| May 31, 4:59 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 46 min |
| May 31, 5:55 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 35 min |
| Jun 5, 2:14 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn | 46 min |
| Jun 5, 3:27 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 33 min |
| Jun 5, 4:30 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Washakie | 45 min |
| Jun 5, 4:37 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 23 min |
| Jun 5, 4:56 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Washakie | 64 min |
| Jun 5, 7:13 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 62 min |
| Jun 5, 7:46 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 30 min |
| Jun 5, 9:00 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 45 min |
| Jun 6, 2:38 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 67 min |
| Jun 6, 4:31 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 59 min |
| Jun 6, 5:51 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 54 min |
| Jun 7, 3:31 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 38 min |
| Jun 7, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 62 min |
| Jun 7, 5:24 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 66 min |
| Jun 7, 5:26 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 50 min |
| Jun 7, 6:14 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Niobrara | 61 min |
| Jun 7, 6:19 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 56 min |
| Jun 7, 7:12 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 33 min |
| Jun 7, 7:17 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 58 min |
| Jun 7, 8:05 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 21 min |
| Jun 11, 6:59 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 32 min |
| Jun 11, 7:39 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 51 min |
| Jun 11, 9:19 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 26 min |
| Jun 11, 9:30 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 45 min |
| Jun 11, 10:01 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 27 min |
| Jun 11, 10:53 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Weston | 39 min |
| Jun 12, 2:05 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 25 min |
| Jun 12, 2:28 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Platte | 47 min |
| Jun 12, 3:10 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 65 min |
| Jun 12, 3:11 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 34 min |
| Jun 12, 3:27 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Johnson, Washakie | 33 min |
| Jun 12, 3:36 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse | 27 min |
| Jun 12, 3:40 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Platte | 34 min |
| Jun 12, 4:14 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn | 31 min |
| Jun 12, 4:15 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 45 min |
| Jun 12, 4:26 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| Jun 12, 4:51 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 43 min |
| Jun 12, 4:52 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 23 min |
| Jun 12, 5:03 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Platte | 42 min |
| Jun 12, 5:12 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Niobrara | 48 min |
| Jun 12, 5:24 PM MDT | Severe Thunderstorm Warning | RIW | Park | 36 min |
| Jun 12, 5:31 PM MDT | Severe Thunderstorm Warning | RIW | Park | 17 min |
| Jun 12, 5:39 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 36 min |
| Jun 12, 6:02 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Park | 19 min |
| Jun 12, 6:18 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 26 min |
| Jun 12, 6:19 PM MDT | Severe Thunderstorm Warning | RIW | Park | 15 min |
| Jun 12, 6:35 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 25 min |
| Jun 12, 6:56 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Johnson, Washakie | 34 min |
| Jun 12, 7:02 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 43 min |
| Jun 12, 7:07 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 53 min |
| Jun 12, 7:18 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 27 min |
| Jun 12, 7:34 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Johnson, Washakie | 19 min |
| Jun 12, 7:44 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 46 min |
| Jun 12, 7:54 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 51 min |
| Jun 20, 3:52 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 38 min |
| Jun 27, 1:19 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Hot Springs, Park, Washakie | 41 min |
| Jun 27, 1:26 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Hot Springs, Sublette | 49 min |
| Jun 27, 2:14 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Johnson, Washakie | 46 min |
| Jun 27, 2:22 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Hot Springs, Washakie | 38 min |
| Jun 27, 4:38 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 67 min |
| Jun 27, 4:39 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 51 min |
| Jun 27, 5:40 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie, Platte | 42 min |
| Jun 27, 5:52 PM MDT | Severe Thunderstorm Warning | UNR | Crook, Weston | 43 min |
| Jun 27, 6:04 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 39 min |
| Jun 28, 2:39 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 66 min |
| Jun 28, 3:44 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 61 min |
| Jun 28, 5:23 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 55 min |
| Jun 28, 7:00 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 29 min |
| Jun 28, 7:45 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 34 min |
| Jun 29, 1:17 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 43 min |
| Jun 29, 2:02 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 43 min |
| Jul 2, 4:25 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 35 min |
| Jul 2, 4:33 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 29 min |
| Jul 2, 5:05 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 40 min |
| Jul 2, 8:32 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 18 min |
| Jul 7, 4:00 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| Jul 7, 4:27 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 31 min |
| Jul 7, 4:31 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 44 min |
| Jul 9, 2:30 PM MDT | Severe Thunderstorm Warning | RIW | Park | 30 min |
| Jul 11, 7:19 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 56 min |
| Jul 11, 8:14 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 61 min |
| Jul 11, 9:02 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 43 min |
| Jul 12, 3:59 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 46 min |
| Jul 12, 4:42 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 48 min |
| Jul 12, 5:12 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 63 min |
| Jul 12, 9:09 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 51 min |
| Jul 17, 4:35 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 28 min |
| Jul 17, 8:29 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 76 min |
| Jul 17, 9:31 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 23 min |
| Jul 18, 6:13 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 32 min |
| Jul 20, 1:45 PM MDT | Severe Thunderstorm Warning | RIW | Teton | 45 min |
| Jul 20, 2:12 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Park, Teton | 48 min |
| Jul 20, 2:58 PM MDT | Severe Thunderstorm Warning | RIW | Park, Teton | 33 min |
| Jul 20, 3:08 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Sublette | 52 min |
| Jul 20, 3:24 PM MDT | Severe Thunderstorm Warning | RIW | Lincoln, Sublette, Teton | 37 min |
| Jul 20, 4:00 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Sublette | 25 min |
| Jul 20, 7:51 PM MDT | Severe Thunderstorm Warning | UNR | Crook, Weston | 54 min |
| Jul 20, 7:54 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Weston | 66 min |
| Jul 20, 8:39 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook, Weston | 53 min |
| Jul 21, 2:40 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 35 min |
| Jul 21, 3:02 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 16 min |
| Jul 27, 2:47 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 33 min |
| Jul 27, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 44 min |
| Jul 27, 4:47 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 28 min |
| Jul 27, 4:50 PM MDT | Severe Thunderstorm Warning | UNR | Crook, Weston | 34 min |
| Jul 27, 6:30 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 60 min |
| Jul 27, 10:24 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 36 min |
| Aug 1, 6:02 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 58 min |
| Aug 1, 6:20 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 30 min |
| Aug 1, 6:24 PM MDT | Severe Thunderstorm Warning | UNR | Campbell, Crook | 66 min |
| Aug 1, 6:31 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 59 min |
| Aug 1, 6:33 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 20 min |
| Aug 5, 3:13 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 32 min |
| Aug 5, 3:42 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 33 min |
| Aug 5, 8:20 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 25 min |
| Aug 11, 4:15 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Niobrara | 32 min |
| Aug 11, 5:23 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 37 min |
| Aug 13, 7:13 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 28 min |
| Aug 13, 7:35 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 40 min |
| Aug 14, 3:41 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 16 min |
| Aug 14, 6:07 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara | 23 min |
| Aug 14, 6:28 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 47 min |
| Aug 14, 6:37 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 53 min |
| Aug 14, 7:26 PM MDT | Severe Thunderstorm Warning | UNR | Crook, Weston | 49 min |
| Aug 15, 1:29 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 46 min |
| Aug 15, 4:14 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 61 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Crook County21
- Laramie County20
- Campbell County19
- Johnson County16
- Goshen County15
- Weston County13
- Niobrara County13
- Fremont County11
- Platte County10
- Natrona County10
- Big Horn County8
- Washakie County8
- Converse County8
- Park County8
- Albany County7
- Carbon County6
- Sublette County5
- Sheridan County4
- Sweetwater County4
- Teton County4
- Hot Springs County3
- Uinta County1
- Lincoln County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.