Alert archive / Wyoming / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Wyoming, 2026

337 severe thunderstorm warnings in 2026. 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 2026. Tap one for its archive.

Severe Thunderstorm Warnings: 337
Busiest month: June198 severe thunderstorm warnings
Busiest day: June 25, 202632 severe thunderstorm warnings

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

128 of 337 severe thunderstorm warnings covering Wyoming in 2026 had a qualifying storm report inside them; 210 of 388 hail, wind and damage reports fell inside a warning, on average 22 minutes after it went out.

Wyoming, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	337	128	62%	388	54%	22 min

Each office's whole area, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Rapid City, SD: severe thunderstorm warnings	358	198	45%	743	72%	25 min
NWS Salt Lake City, UT: severe thunderstorm warnings	144	61	58%	338	46%	22 min
NWS Riverton, WY: severe thunderstorm warnings	63	19	70%	127	31%	26 min
NWS Billings, MT: severe thunderstorm warnings	150	39	74%	123	47%	24 min
NWS Cheyenne, WY: severe thunderstorm warnings	350	140	60%	293	76%	22 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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	Counties	Lasted
Apr 11, 4:07 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	23 min
Apr 11, 4:23 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	52 min
Apr 13, 1:26 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	64 min
May 9, 2:43 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	47 min
May 9, 4:21 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	39 min
May 9, 4:47 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
May 9, 4:56 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	34 min
May 9, 5:00 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	45 min
May 13, 4:05 PM MDT	Severe Thunderstorm Warning Considerable damage threat	SLC	Uinta	55 min
May 13, 4:27 PM MDT	Severe Thunderstorm Warning	RIW	Park, Teton	63 min
May 13, 4:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	SLC	Uinta	49 min
May 13, 4:45 PM MDT	Severe Thunderstorm Warning	RIW	Teton	60 min
May 13, 4:58 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	21 min
May 13, 5:16 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	29 min
May 26, 3:26 PM MDT	Severe Thunderstorm Warning	RIW	Teton	49 min
May 29, 5:05 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	40 min
May 30, 2:30 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	45 min
May 30, 2:46 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	17 min
May 30, 3:17 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
May 30, 4:05 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	25 min
Jun 1, 12:47 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	43 min
Jun 1, 1:26 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	49 min
Jun 1, 2:13 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	47 min
Jun 1, 2:31 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	59 min
Jun 1, 2:54 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	51 min
Jun 1, 3:25 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	50 min
Jun 1, 3:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	51 min
Jun 1, 3:45 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Jun 1, 4:31 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	59 min
Jun 2, 2:24 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	51 min
Jun 2, 2:56 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	49 min
Jun 2, 2:57 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	48 min
Jun 2, 3:00 PM MDT	Severe Thunderstorm Warning	CYS	Converse	45 min
Jun 2, 3:21 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	54 min
Jun 2, 3:25 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	50 min
Jun 2, 3:57 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	48 min
Jun 2, 4:08 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	30 min
Jun 2, 4:13 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	36 min
Jun 2, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	18 min
Jun 2, 5:30 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	45 min
Jun 2, 5:58 PM MDT	Severe Thunderstorm Warning	UNR	Crook	32 min
Jun 2, 6:25 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook	50 min
Jun 2, 6:33 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook	42 min
Jun 2, 7:13 PM MDT	Severe Thunderstorm Warning	UNR	Crook	40 min
Jun 3, 5:41 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	49 min
Jun 4, 2:39 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	19 min
Jun 4, 3:23 PM MDT	Severe Thunderstorm Warning	UNR	Crook	53 min
Jun 4, 3:35 PM MDT	Severe Thunderstorm Warning	UNR	Crook	15 min
Jun 4, 4:14 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	13 min
Jun 4, 5:14 PM MDT	Severe Thunderstorm Warning	UNR	Weston	46 min
Jun 4, 7:22 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	18 min
Jun 6, 9:07 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jun 7, 1:43 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Washakie	31 min
Jun 7, 3:17 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	58 min
Jun 7, 3:59 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	16 min
Jun 7, 4:14 PM MDT	Severe Thunderstorm Warning	UNR	Crook	31 min
Jun 7, 5:36 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	24 min
Jun 7, 7:01 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell	59 min
Jun 7, 7:04 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BYZ	Sheridan	41 min
Jun 7, 8:06 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	24 min
Jun 7, 8:09 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	24 min
Jun 8, 1:16 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	44 min
Jun 8, 1:55 PM MDT	Severe Thunderstorm Warning	CYS	Platte	50 min
Jun 8, 2:41 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	49 min
Jun 8, 3:08 PM MDT	Severe Thunderstorm Warning	CYS	Platte	37 min
Jun 8, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	Platte	45 min
Jun 8, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	23 min
Jun 8, 5:31 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	44 min
Jun 8, 5:51 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	39 min
Jun 8, 6:22 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	53 min
Jun 8, 6:23 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	12 min
Jun 8, 7:00 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	45 min
Jun 8, 7:03 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	42 min
Jun 8, 7:42 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	24 min
Jun 8, 7:53 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	13 min
Jun 20, 1:18 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	42 min
Jun 20, 2:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Fremont, Hot Springs, Natrona	45 min
Jun 20, 2:40 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	50 min
Jun 20, 2:48 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs, Washakie	42 min
Jun 20, 2:59 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	61 min
Jun 20, 3:12 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	48 min
Jun 20, 3:25 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon, Converse	65 min
Jun 20, 3:29 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Washakie	46 min
Jun 20, 3:40 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	20 min
Jun 20, 3:46 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Johnson, Natrona	44 min
Jun 20, 3:49 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Converse	56 min
Jun 20, 3:56 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Natrona	34 min
Jun 20, 4:14 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Johnson, Washakie	46 min
Jun 20, 4:14 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell, Weston	61 min
Jun 20, 4:29 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Platte	46 min
Jun 20, 4:29 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Johnson	46 min
Jun 20, 4:41 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	49 min
Jun 20, 5:08 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	67 min
Jun 20, 5:11 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	64 min
Jun 20, 5:14 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Johnson	61 min
Jun 20, 5:25 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Goshen, Platte	50 min
Jun 20, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	63 min
Jun 20, 5:35 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln, Sublette	25 min
Jun 20, 6:01 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	44 min
Jun 20, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara, Platte	50 min
Jun 20, 6:12 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	24 min
Jun 20, 6:12 PM MDT	Severe Thunderstorm Warning	UNR	Weston	63 min
Jun 20, 6:20 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln	40 min
Jun 20, 6:26 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	39 min
Jun 20, 6:37 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln, Sublette, Sweetwater	38 min
Jun 20, 6:40 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	35 min
Jun 20, 6:42 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	48 min
Jun 20, 6:48 PM MDT	Severe Thunderstorm Warning	UNR	Weston	42 min
Jun 20, 6:52 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jun 20, 6:54 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	38 min
Jun 20, 7:04 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sublette, Sweetwater	41 min
Jun 20, 7:13 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	29 min
Jun 20, 7:27 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	17 min
Jun 20, 7:43 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sweetwater	47 min
Jun 20, 7:49 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	41 min
Jun 22, 1:34 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	26 min
Jun 22, 1:38 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	37 min
Jun 22, 1:43 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	47 min
Jun 22, 1:59 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	22 min
Jun 22, 2:07 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	38 min
Jun 22, 2:09 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	51 min
Jun 22, 2:22 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	53 min
Jun 22, 2:30 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Jun 22, 2:44 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	46 min
Jun 22, 2:49 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	27 min
Jun 22, 3:06 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	39 min
Jun 22, 3:21 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell	54 min
Jun 22, 3:37 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	38 min
Jun 22, 3:50 PM MDT	Severe Thunderstorm Warning	CYS	Converse	40 min
Jun 22, 4:02 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	13 min
Jun 22, 4:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	52 min
Jun 22, 4:23 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	67 min
Jun 22, 4:47 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BYZ	Sheridan	58 min
Jun 22, 4:50 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	55 min
Jun 22, 5:23 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	67 min
Jun 22, 5:40 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	41 min
Jun 22, 6:05 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	55 min
Jun 22, 6:21 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	54 min
Jun 22, 6:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	64 min
Jun 22, 7:01 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Carbon	59 min
Jun 22, 7:52 PM MDT	Severe Thunderstorm Warning	UNR	Weston	53 min
Jun 22, 8:34 PM MDT	Severe Thunderstorm Warning	UNR	Weston	56 min
Jun 22, 9:54 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	23 min
Jun 22, 10:36 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	24 min
Jun 22, 10:56 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	34 min
Jun 23, 4:53 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	37 min
Jun 23, 5:02 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
Jun 23, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	35 min
Jun 24, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	45 min
Jun 24, 5:04 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	41 min
Jun 24, 5:29 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	46 min
Jun 24, 5:34 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	20 min
Jun 24, 5:38 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	52 min
Jun 24, 5:43 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	47 min
Jun 24, 5:45 PM MDT	Severe Thunderstorm Warning	CYS	Albany	45 min
Jun 24, 5:58 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	47 min
Jun 24, 6:06 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	16 min
Jun 24, 6:13 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	47 min
Jun 24, 6:23 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Platte	52 min
Jun 24, 6:43 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	47 min
Jun 24, 6:51 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Platte	54 min
Jun 24, 7:14 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	46 min
Jun 24, 8:10 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse	50 min
Jun 24, 8:23 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jun 24, 9:00 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	23 min
Jun 24, 9:33 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	27 min
Jun 24, 9:57 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	33 min
Jun 24, 10:08 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	37 min
Jun 25, 11:32 AM MDT	Severe Thunderstorm Warning	RIW	Sublette	28 min
Jun 25, 12:00 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	45 min
Jun 25, 12:45 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sublette, Sweetwater	45 min
Jun 25, 1:12 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	48 min
Jun 25, 1:22 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	23 min
Jun 25, 1:36 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sweetwater	39 min
Jun 25, 1:38 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Hot Springs, Natrona, Washakie	52 min
Jun 25, 1:40 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	35 min
Jun 25, 1:59 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	46 min
Jun 25, 2:10 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Natrona	50 min
Jun 25, 2:11 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sweetwater	49 min
Jun 25, 2:14 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	46 min
Jun 25, 2:48 PM MDT	Severe Thunderstorm Warning	RIW	Sweetwater	42 min
Jun 25, 2:52 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Natrona	68 min
Jun 25, 2:56 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	49 min
Jun 25, 3:23 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon, Converse, Platte	52 min
Jun 25, 3:52 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon, Converse	23 min
Jun 25, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more	60 min
Jun 25, 5:06 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Goshen, Laramie, Platte	54 min
Jun 25, 5:54 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	51 min
Jun 25, 7:56 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	34 min
Jun 26, 3:17 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	43 min
Jun 26, 4:39 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	36 min
Jun 26, 4:52 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	35 min
Jun 26, 4:56 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	34 min
Jun 26, 5:11 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	53 min
Jun 26, 5:40 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	65 min
Jun 26, 6:03 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	44 min
Jun 26, 6:16 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	30 min
Jun 26, 6:23 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	52 min
Jun 26, 6:43 PM MDT	Severe Thunderstorm Warning	UNR	Weston	62 min
Jun 26, 6:49 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	26 min
Jun 26, 7:18 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	27 min
Jun 26, 7:50 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	25 min
Jun 27, 1:09 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	36 min
Jun 27, 1:14 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	32 min
Jun 27, 1:28 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	62 min
Jun 27, 1:45 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	45 min
Jun 27, 2:24 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BYZ	Sheridan	56 min
Jun 27, 2:30 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	30 min
Jun 27, 2:30 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	45 min
Jun 27, 3:12 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	48 min
Jun 27, 3:13 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	47 min
Jun 27, 3:33 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	27 min
Jun 27, 3:54 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	36 min
Jun 27, 4:15 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	30 min
Jun 27, 4:36 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	24 min
Jun 27, 5:48 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Johnson	31 min
Jun 27, 5:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Big Horn, Johnson, Washakie	35 min
Jun 29, 12:02 AM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	43 min
Jul 2, 6:08 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	18 min
Jul 3, 1:34 PM MDT	Severe Thunderstorm Warning	UNR	Crook	17 min
Jul 3, 2:04 PM MDT	Severe Thunderstorm Warning	UNR	Crook	26 min
Jul 3, 2:09 PM MDT	Severe Thunderstorm Warning	UNR	Weston	42 min
Jul 3, 2:20 PM MDT	Severe Thunderstorm Warning	UNR	Crook	45 min
Jul 3, 2:55 PM MDT	Severe Thunderstorm Warning	UNR	Crook	49 min
Jul 3, 2:59 PM MDT	Severe Thunderstorm Warning	UNR	Weston	53 min
Jul 3, 7:08 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	38 min
Jul 6, 4:54 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	30 min
Jul 6, 5:17 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	29 min
Jul 6, 5:19 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	41 min
Jul 6, 8:04 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	26 min
Jul 7, 1:48 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	42 min
Jul 7, 4:05 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Weston	45 min
Jul 7, 5:44 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	61 min
Jul 7, 6:37 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	16 min
Jul 7, 9:35 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn	13 min
Jul 8, 2:13 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	21 min
Jul 8, 3:09 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	51 min
Jul 8, 3:43 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	47 min
Jul 8, 4:13 PM MDT	Severe Thunderstorm Warning	UNR	Weston	25 min
Jul 8, 4:16 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	26 min
Jul 8, 4:18 PM MDT	Severe Thunderstorm Warning	UNR	Weston	23 min
Jul 8, 4:19 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	41 min
Jul 8, 4:30 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	45 min
Jul 8, 4:35 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	32 min
Jul 8, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jul 8, 5:05 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	40 min
Jul 8, 7:05 PM MDT	Severe Thunderstorm Warning	UNR	Crook	25 min
Jul 8, 7:44 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	31 min
Jul 9, 4:59 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	46 min
Jul 19, 4:42 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	48 min
Jul 19, 5:28 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	46 min
Jul 19, 6:53 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell	52 min
Jul 19, 7:36 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	39 min
Jul 19, 8:14 PM MDT	Severe Thunderstorm Warning	UNR	Crook	46 min
Jul 20, 5:31 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	44 min
Jul 20, 6:45 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	34 min
Jul 22, 5:23 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	23 min
Jul 23, 6:42 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	48 min
Jul 23, 7:35 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	40 min
Jul 26, 4:59 PM MDT	Severe Thunderstorm Warning	RIW	Teton	31 min
Jul 26, 7:21 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	54 min
Jul 26, 8:10 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	65 min
Jul 26, 8:56 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	34 min
Jul 26, 9:56 PM MDT	Severe Thunderstorm Warning	UNR	Crook	49 min
Jul 28, 6:56 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	34 min
Jul 28, 7:15 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	18 min
Jul 28, 8:01 PM MDT	Severe Thunderstorm Warning	CYS	Platte	29 min
Jul 28, 9:07 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	23 min
Jul 28, 9:22 PM MDT	Severe Thunderstorm Warning	UNR	Weston	23 min
Jul 28, 9:40 PM MDT	Severe Thunderstorm Warning	UNR	Weston	50 min
Jul 29, 2:38 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	67 min
Jul 29, 3:26 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	49 min
Jul 29, 3:49 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	41 min
Aug 9, 4:10 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	50 min
Aug 9, 4:54 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Carbon	51 min
Aug 9, 5:06 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	39 min
Aug 10, 4:00 PM MDT	Severe Thunderstorm Warning	CYS	Converse	45 min
Aug 10, 4:37 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	38 min
Aug 10, 5:34 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	41 min
Aug 12, 12:25 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	35 min
Aug 12, 1:03 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell, Weston	42 min
Aug 12, 1:44 PM MDT	Severe Thunderstorm Warning	UNR	Weston	46 min
Aug 12, 2:00 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Aug 12, 2:26 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Weston	49 min
Aug 12, 3:14 PM MDT	Severe Thunderstorm Warning	UNR	Weston	46 min
Aug 12, 3:31 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	14 min
Aug 13, 7:10 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	50 min
Aug 15, 3:01 PM MDT	Severe Thunderstorm Warning	CYS	Converse	32 min
Aug 15, 3:50 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	40 min
Aug 15, 4:26 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	28 min
Aug 15, 4:36 PM MDT	Severe Thunderstorm Warning	CYS	Converse	39 min
Aug 15, 4:45 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	45 min
Aug 15, 5:48 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara, Platte	42 min
Aug 16, 5:55 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	50 min
Aug 16, 6:00 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	45 min
Aug 16, 8:20 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	40 min
Aug 21, 6:58 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	47 min
Aug 21, 7:41 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	49 min
Aug 22, 1:49 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	41 min
Aug 22, 4:03 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	27 min
Aug 22, 4:40 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	35 min
Aug 22, 4:57 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Goshen, Niobrara, Platte	48 min
Aug 22, 5:37 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	38 min
Aug 22, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	50 min
Aug 22, 6:13 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	47 min
Aug 22, 7:17 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	43 min
Aug 22, 7:25 PM MDT	Severe Thunderstorm Warning	CYS	Converse	38 min
Aug 22, 9:39 PM MDT	Severe Thunderstorm Warning	CYS	Converse	51 min
Aug 24, 9:23 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	52 min
Aug 25, 3:33 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	42 min
Aug 25, 5:05 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	40 min
Aug 25, 5:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	51 min
Aug 25, 6:18 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	42 min
Aug 25, 6:57 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	48 min
Aug 25, 8:01 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	44 min
Aug 25, 11:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Platte	52 min
Aug 26, 3:48 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	42 min
Aug 26, 4:32 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
Aug 26, 4:43 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	22 min
Aug 26, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	48 min
Aug 26, 6:08 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	40 min
Aug 26, 6:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	19 min
Aug 27, 3:44 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	31 min
Aug 27, 4:12 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	11 min
Aug 29, 12:51 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Carbon	39 min
Aug 29, 1:20 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	40 min
Aug 29, 1:33 PM MDT	Severe Thunderstorm Warning	CYS	Albany	27 min
Aug 29, 2:53 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	52 min
Aug 29, 3:48 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	42 min
Aug 29, 3:53 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	52 min
Sep 6, 9:17 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Converse, Niobrara, Platte	43 min
Sep 6, 10:49 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	56 min
Sep 18, 2:31 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	29 min
Sep 18, 6:36 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	39 min
Sep 18, 7:56 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	49 min
Sep 19, 6:37 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	23 min
Sep 19, 6:59 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	31 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.