Alert archive / Wyoming / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Wyoming, 2025

413 severe thunderstorm warnings in 2025. 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 2025. Tap one for its archive.

Severe Thunderstorm Warnings: 413
Busiest month: June179 severe thunderstorm warnings
Busiest day: June 17, 202545 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.

147 of 413 severe thunderstorm warnings covering Wyoming in 2025 had a qualifying storm report inside them; 197 of 337 hail, wind and damage reports fell inside a warning, on average 23 minutes after it went out.

Wyoming, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	413	147	64%	337	58%	23 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: severe thunderstorm warnings	315	138	56%	270	81%	22 min
NWS Riverton, WY: severe thunderstorm warnings	108	21	81%	104	26%	15 min
NWS Rapid City, SD: severe thunderstorm warnings	382	214	44%	538	78%	26 min
NWS Salt Lake City, UT: severe thunderstorm warnings	57	22	61%	155	25%	22 min
NWS Billings, MT: severe thunderstorm warnings	260	77	70%	213	67%	27 min

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

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
Mar 31, 7:13 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	32 min
Apr 27, 3:54 PM MDT	Severe Thunderstorm Warning	RIW	Park	21 min
May 4, 4:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Carbon	43 min
May 11, 1:34 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	26 min
May 11, 2:45 PM MDT	Severe Thunderstorm Warning Considerable damage threat	SLC	Uinta	30 min
May 11, 3:12 PM MDT	Severe Thunderstorm Warning	RIW	Teton	33 min
May 11, 3:21 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	24 min
May 11, 3:44 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Teton	31 min
May 11, 5:29 PM MDT	Severe Thunderstorm Warning	RIW	Park	31 min
May 11, 5:36 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	39 min
May 11, 5:50 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Park	25 min
May 13, 11:39 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	36 min
May 17, 1:51 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln	39 min
May 18, 2:57 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	48 min
May 18, 3:28 PM MDT	Severe Thunderstorm Warning	CYS	Platte	47 min
May 18, 3:40 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	50 min
May 18, 4:08 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	37 min
May 18, 4:57 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	48 min
May 23, 3:43 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	47 min
May 23, 7:58 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	47 min
May 23, 8:40 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	35 min
May 23, 9:11 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	49 min
May 24, 12:35 PM MDT	Severe Thunderstorm Warning	CYS	Albany	40 min
May 24, 1:12 PM MDT	Severe Thunderstorm Warning	CYS	Albany	48 min
May 24, 1:53 PM MDT	Severe Thunderstorm Warning	CYS	Albany	37 min
Jun 1, 4:20 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	25 min
Jun 1, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	46 min
Jun 1, 5:39 PM MDT	Severe Thunderstorm Warning	RIW	Park	22 min
Jun 1, 6:53 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	37 min
Jun 1, 7:03 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	57 min
Jun 1, 7:09 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	36 min
Jun 1, 7:27 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	33 min
Jun 1, 7:32 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	28 min
Jun 1, 8:39 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	27 min
Jun 2, 3:47 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
Jun 2, 3:49 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	41 min
Jun 2, 4:25 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Platte	50 min
Jun 2, 4:38 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jun 2, 4:47 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	43 min
Jun 2, 4:50 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	40 min
Jun 2, 5:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Laramie	45 min
Jun 2, 5:26 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	49 min
Jun 4, 2:05 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	40 min
Jun 4, 2:43 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	32 min
Jun 6, 2:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Laramie	35 min
Jun 11, 3:56 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln	19 min
Jun 11, 4:14 PM MDT	Severe Thunderstorm Warning	RIW	Lincoln, Sublette	46 min
Jun 11, 4:57 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	48 min
Jun 11, 5:04 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	56 min
Jun 11, 5:27 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	33 min
Jun 11, 5:49 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	56 min
Jun 11, 5:58 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	30 min
Jun 11, 6:12 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	26 min
Jun 11, 6:22 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	31 min
Jun 11, 6:50 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	25 min
Jun 11, 7:25 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	33 min
Jun 12, 2:15 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	45 min
Jun 12, 2:55 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	50 min
Jun 12, 3:03 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	42 min
Jun 12, 3:06 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	39 min
Jun 12, 3:31 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	44 min
Jun 12, 3:35 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie, Platte	40 min
Jun 12, 3:49 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	41 min
Jun 12, 4:12 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	48 min
Jun 12, 4:22 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	38 min
Jun 12, 4:47 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	43 min
Jun 12, 5:04 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	41 min
Jun 12, 5:42 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Niobrara	48 min
Jun 12, 5:46 PM MDT	Severe Thunderstorm Warning	CYS	Platte	44 min
Jun 12, 6:05 PM MDT	Severe Thunderstorm Warning	CYS	Albany	40 min
Jun 12, 6:29 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	46 min
Jun 12, 6:31 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	30 min
Jun 12, 7:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	52 min
Jun 12, 7:57 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	33 min
Jun 13, 2:32 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	43 min
Jun 13, 2:38 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse	37 min
Jun 13, 2:48 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	42 min
Jun 13, 3:05 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	55 min
Jun 13, 3:28 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	47 min
Jun 13, 3:35 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	40 min
Jun 13, 3:59 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	28 min
Jun 13, 4:09 PM MDT	Severe Thunderstorm Warning	CYS	Converse	51 min
Jun 13, 4:43 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	47 min
Jun 13, 4:48 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	72 min
Jun 13, 6:25 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	65 min
Jun 13, 6:26 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell	47 min
Jun 13, 6:31 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	44 min
Jun 13, 6:58 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell, Crook	31 min
Jun 13, 8:25 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	65 min
Jun 13, 9:05 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	40 min
Jun 13, 9:28 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	62 min
Jun 13, 9:44 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	61 min
Jun 13, 10:11 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	64 min
Jun 13, 10:42 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	20 min
Jun 13, 11:19 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	41 min
Jun 13, 11:59 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	22 min
Jun 14, 6:06 PM MDT	Severe Thunderstorm Warning	CYS	Converse	54 min
Jun 14, 6:30 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara	60 min
Jun 14, 6:33 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	57 min
Jun 14, 6:45 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	45 min
Jun 14, 7:26 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	64 min
Jun 14, 7:35 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	25 min
Jun 14, 7:42 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	13 min
Jun 14, 7:51 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	24 min
Jun 14, 8:11 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	35 min
Jun 15, 5:32 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	43 min
Jun 15, 5:46 PM MDT	Severe Thunderstorm Warning	CYS	Converse	59 min
Jun 15, 6:04 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	56 min
Jun 15, 6:42 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	40 min
Jun 15, 6:58 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	32 min
Jun 15, 7:39 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	51 min
Jun 16, 4:30 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	60 min
Jun 16, 4:35 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	25 min
Jun 16, 4:43 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	27 min
Jun 16, 4:58 PM MDT	Severe Thunderstorm Warning	CYS	Converse	51 min
Jun 16, 5:22 PM MDT	Severe Thunderstorm Warning	CYS	Converse	53 min
Jun 16, 5:40 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	46 min
Jun 16, 5:49 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	41 min
Jun 16, 6:29 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	46 min
Jun 16, 7:08 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	37 min
Jun 16, 7:28 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	30 min
Jun 16, 7:29 PM MDT	Severe Thunderstorm Warning	CYS	Converse	61 min
Jun 16, 7:30 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	60 min
Jun 16, 7:32 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	43 min
Jun 16, 7:33 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	27 min
Jun 16, 7:41 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	34 min
Jun 16, 7:57 PM MDT	Severe Thunderstorm Warning	UNR	Weston	33 min
Jun 16, 7:58 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	47 min
Jun 16, 8:09 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	36 min
Jun 16, 8:15 PM MDT	Severe Thunderstorm Warning	UNR	Weston	30 min
Jun 16, 8:23 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	67 min
Jun 16, 8:37 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	38 min
Jun 16, 8:54 PM MDT	Severe Thunderstorm Warning	CYS	Carbon, Converse	66 min
Jun 16, 9:25 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	50 min
Jun 16, 9:48 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	42 min
Jun 16, 9:57 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	63 min
Jun 16, 10:29 PM MDT	Severe Thunderstorm Warning	CYS	Platte	46 min
Jun 16, 11:06 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	39 min
Jun 16, 11:51 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	39 min
Jun 17, 12:34 AM MDT	Severe Thunderstorm Warning	CYS	Goshen	41 min
Jun 17, 12:59 AM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	46 min
Jun 17, 11:44 AM MDT	Severe Thunderstorm Warning	CYS	Albany	46 min
Jun 17, 11:56 AM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	49 min
Jun 17, 12:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Laramie	43 min
Jun 17, 12:28 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Laramie	47 min
Jun 17, 12:43 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	47 min
Jun 17, 1:01 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Goshen, Laramie, Platte	44 min
Jun 17, 1:07 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jun 17, 1:33 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	27 min
Jun 17, 1:35 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	55 min
Jun 17, 1:43 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	31 min
Jun 17, 2:05 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	55 min
Jun 17, 2:11 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	34 min
Jun 17, 2:33 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	27 min
Jun 17, 2:44 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	46 min
Jun 17, 2:46 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	59 min
Jun 17, 2:53 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	19 min
Jun 17, 3:06 PM MDT	Severe Thunderstorm Warning	CYS	Converse	54 min
Jun 17, 3:16 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	44 min
Jun 17, 3:38 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	18 min
Jun 17, 3:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Carbon	64 min
Jun 17, 3:43 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Platte	47 min
Jun 17, 4:39 PM MDT	Severe Thunderstorm Warning	CYS	Albany	51 min
Jun 22, 3:47 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	28 min
Jun 22, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	45 min
Jun 24, 4:56 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	49 min
Jun 24, 5:23 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	38 min
Jun 24, 9:39 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	36 min
Jun 24, 10:10 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	50 min
Jun 24, 10:48 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	42 min
Jun 24, 11:13 PM MDT	Severe Thunderstorm Warning	CYS	Converse	62 min
Jun 25, 12:09 AM MDT	Severe Thunderstorm Warning	CYS	Converse	66 min
Jun 25, 1:14 AM MDT	Severe Thunderstorm Warning	CYS	Converse	31 min
Jun 25, 2:55 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	65 min
Jun 25, 3:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	64 min
Jun 25, 5:04 PM MDT	Severe Thunderstorm Warning	UNR	Crook	56 min
Jun 27, 3:49 PM MDT	Severe Thunderstorm Warning	UNR	Crook	26 min
Jun 27, 4:14 PM MDT	Severe Thunderstorm Warning	UNR	Crook	28 min
Jun 28, 2:13 PM MDT	Severe Thunderstorm Warning	UNR	Crook	62 min
Jun 28, 7:48 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Carbon	72 min
Jun 28, 9:16 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	59 min
Jun 28, 9:23 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	32 min
Jun 28, 10:11 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	50 min
Jun 28, 10:59 PM MDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Crook	46 min
Jun 29, 5:32 AM MDT	Severe Thunderstorm Warning	UNR	Weston	43 min
Jun 29, 1:56 PM MDT	Severe Thunderstorm Warning	UNR	Weston	64 min
Jun 29, 2:22 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	53 min
Jun 29, 2:53 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	50 min
Jun 29, 3:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Carbon	31 min
Jun 29, 3:18 PM MDT	Severe Thunderstorm Warning	UNR	Weston	57 min
Jun 29, 3:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	66 min
Jun 29, 4:09 PM MDT	Severe Thunderstorm Warning	UNR	Weston	66 min
Jun 29, 4:21 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	54 min
Jun 29, 4:42 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	63 min
Jun 29, 5:18 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	57 min
Jun 29, 5:22 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	22 min
Jun 29, 5:36 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	54 min
Jun 29, 5:48 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	57 min
Jun 29, 6:23 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	52 min
Jun 29, 6:48 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	57 min
Jun 29, 7:09 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	51 min
Jun 29, 7:41 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	49 min
Jun 29, 7:57 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	34 min
Jun 29, 8:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	51 min
Jul 4, 3:29 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	31 min
Jul 4, 3:58 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	47 min
Jul 4, 4:18 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	57 min
Jul 4, 4:29 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn	31 min
Jul 4, 4:32 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	28 min
Jul 4, 4:54 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Natrona	51 min
Jul 4, 5:45 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	15 min
Jul 4, 5:51 PM MDT	Severe Thunderstorm Warning	CYS	Converse	54 min
Jul 4, 6:33 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	42 min
Jul 4, 6:35 PM MDT	Severe Thunderstorm Warning	CYS	Converse	70 min
Jul 4, 6:57 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	48 min
Jul 4, 7:12 PM MDT	Severe Thunderstorm Warning	SLC	Uinta	33 min
Jul 4, 7:19 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	56 min
Jul 4, 7:42 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	82 min
Jul 4, 8:45 PM MDT	Severe Thunderstorm Warning	UNR	Weston	45 min
Jul 5, 1:17 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	13 min
Jul 5, 1:22 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Sublette	23 min
Jul 5, 6:03 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	57 min
Jul 5, 6:57 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook	63 min
Jul 6, 2:36 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie, Platte	39 min
Jul 6, 3:03 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	27 min
Jul 6, 3:16 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	44 min
Jul 6, 3:53 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jul 6, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	38 min
Jul 6, 5:15 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara, Platte	30 min
Jul 6, 5:26 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	24 min
Jul 6, 5:48 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	42 min
Jul 6, 5:49 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	26 min
Jul 6, 6:17 PM MDT	Severe Thunderstorm Warning Destructive damage threat	CYS	Niobrara	43 min
Jul 6, 6:46 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	23 min
Jul 6, 6:54 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	38 min
Jul 6, 9:51 PM MDT	Severe Thunderstorm Warning	UNR	Weston	30 min
Jul 7, 1:03 AM MDT	Severe Thunderstorm Warning	UNR	Crook	12 min
Jul 10, 2:46 PM MDT	Severe Thunderstorm Warning	CYS	Albany	29 min
Jul 10, 3:52 PM MDT	Severe Thunderstorm Warning	CYS	Albany	23 min
Jul 10, 4:14 PM MDT	Severe Thunderstorm Warning	CYS	Albany	31 min
Jul 10, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	Albany	31 min
Jul 10, 5:14 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse	46 min
Jul 10, 5:23 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	37 min
Jul 10, 6:22 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	38 min
Jul 10, 6:37 PM MDT	Severe Thunderstorm Warning	CYS	Converse	21 min
Jul 10, 6:43 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	32 min
Jul 10, 8:19 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	26 min
Jul 11, 3:27 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	48 min
Jul 11, 3:55 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	50 min
Jul 11, 4:07 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Laramie	38 min
Jul 11, 4:36 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	39 min
Jul 11, 4:38 PM MDT	Severe Thunderstorm Warning	CYS	Albany	38 min
Jul 11, 5:52 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	38 min
Jul 11, 6:22 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	23 min
Jul 11, 6:38 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jul 11, 7:21 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	24 min
Jul 14, 2:23 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Laramie	52 min
Jul 14, 2:39 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Laramie	36 min
Jul 14, 4:33 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	27 min
Jul 15, 3:34 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	26 min
Jul 15, 3:57 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Hot Springs	48 min
Jul 15, 4:02 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	43 min
Jul 15, 4:02 PM MDT	Severe Thunderstorm Warning	RIW	Sublette	43 min
Jul 15, 4:35 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Hot Springs	40 min
Jul 15, 4:42 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Fremont	48 min
Jul 15, 5:24 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Fremont	51 min
Jul 15, 5:51 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	39 min
Jul 15, 6:08 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	37 min
Jul 15, 6:16 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	29 min
Jul 15, 6:35 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	40 min
Jul 15, 6:46 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	44 min
Jul 15, 6:57 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	48 min
Jul 15, 7:26 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	49 min
Jul 15, 7:27 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	13 min
Jul 15, 7:30 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	45 min
Jul 16, 3:47 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	58 min
Jul 16, 5:09 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	66 min
Jul 18, 3:42 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	33 min
Jul 18, 3:47 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs, Park, Washakie	28 min
Jul 18, 3:55 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	35 min
Jul 18, 4:11 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs, Washakie	34 min
Jul 18, 4:26 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	14 min
Jul 18, 4:40 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	35 min
Jul 18, 4:46 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	29 min
Jul 18, 6:06 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	39 min
Jul 18, 6:13 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	32 min
Jul 18, 6:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	23 min
Jul 18, 7:22 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	23 min
Jul 18, 7:24 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	51 min
Jul 21, 2:54 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	37 min
Jul 21, 3:04 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	41 min
Jul 21, 3:44 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell, Crook	53 min
Jul 21, 3:46 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	45 min
Jul 21, 4:18 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	39 min
Jul 21, 4:57 PM MDT	Severe Thunderstorm Warning	UNR	Crook	43 min
Jul 22, 2:46 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	29 min
Jul 22, 3:08 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	18 min
Jul 22, 10:23 PM MDT	Severe Thunderstorm Warning	CYS	Converse	37 min
Jul 22, 11:11 PM MDT	Severe Thunderstorm Warning	UNR	Weston	64 min
Jul 23, 12:54 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	36 min
Jul 23, 1:12 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Natrona	12 min
Jul 23, 1:18 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	42 min
Jul 23, 1:27 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	21 min
Jul 23, 2:32 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	43 min
Jul 23, 3:02 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	13 min
Jul 23, 3:06 PM MDT	Severe Thunderstorm Warning	CYS	Converse	39 min
Jul 23, 3:59 PM MDT	Severe Thunderstorm Warning	UNR	Weston	61 min
Jul 23, 5:15 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	19 min
Jul 24, 1:14 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	31 min
Jul 24, 3:38 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara	23 min
Jul 24, 4:23 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	37 min
Jul 24, 4:54 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jul 24, 5:00 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	30 min
Jul 24, 6:17 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Campbell	42 min
Jul 26, 7:35 PM MDT	Severe Thunderstorm Warning	UNR	Crook	31 min
Jul 29, 5:11 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	11 min
Jul 29, 5:18 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	42 min
Jul 29, 5:21 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	3 min
Jul 29, 5:24 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Hot Springs	51 min
Jul 29, 5:26 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	49 min
Jul 29, 5:57 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	48 min
Jul 29, 5:58 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	62 min
Jul 29, 6:04 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	26 min
Jul 29, 6:08 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	16 min
Jul 29, 6:12 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	48 min
Jul 29, 6:38 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	15 min
Jul 29, 6:45 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	30 min
Jul 29, 7:00 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	33 min
Jul 29, 7:10 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	35 min
Jul 29, 7:22 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	23 min
Jul 29, 7:38 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	16 min
Jul 29, 7:42 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	11 min
Jul 29, 8:38 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	37 min
Jul 29, 8:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook	50 min
Jul 29, 9:26 PM MDT	Severe Thunderstorm Warning	UNR	Crook	49 min
Jul 29, 9:44 PM MDT	Severe Thunderstorm Warning	UNR	Crook	46 min
Jul 29, 9:48 PM MDT	Severe Thunderstorm Warning	CYS	Albany	42 min
Jul 29, 9:56 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Goshen, Platte	49 min
Jul 29, 10:16 PM MDT	Severe Thunderstorm Warning	UNR	Crook	25 min
Jul 29, 10:43 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Goshen, Laramie, Platte	47 min
Jul 30, 4:10 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	35 min
Jul 30, 4:37 PM MDT	Severe Thunderstorm Warning	RIW	Hot Springs	23 min
Jul 30, 5:39 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Washakie	36 min
Jul 30, 5:53 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	52 min
Jul 30, 6:29 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	28 min
Jul 30, 6:30 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	45 min
Jul 30, 6:57 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	36 min
Jul 30, 7:02 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	43 min
Jul 30, 7:28 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	47 min
Jul 30, 7:50 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Natrona	29 min
Jul 31, 4:07 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jul 31, 4:41 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	49 min
Jul 31, 8:04 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	41 min
Jul 31, 8:42 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	23 min
Jul 31, 9:18 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	16 min
Aug 1, 3:08 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	20 min
Aug 1, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	38 min
Aug 1, 5:00 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	45 min
Aug 1, 5:09 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	51 min
Aug 1, 5:30 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Aug 1, 6:15 PM MDT	Severe Thunderstorm Warning Destructive damage threat	CYS	Laramie	45 min
Aug 1, 7:00 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	30 min
Aug 1, 8:46 PM MDT	Severe Thunderstorm Warning	UNR	Crook	29 min
Aug 2, 4:33 PM MDT	Severe Thunderstorm Warning	CYS	Carbon	42 min
Aug 2, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	22 min
Aug 2, 5:19 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany, Carbon	41 min
Aug 2, 5:50 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	25 min
Aug 2, 6:10 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Albany	65 min
Aug 2, 6:44 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	46 min
Aug 4, 12:24 AM MDT	Severe Thunderstorm Warning	UNR	Campbell	20 min
Aug 4, 4:37 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	53 min
Aug 4, 5:07 PM MDT	Severe Thunderstorm Warning	CYS	Platte	38 min
Aug 4, 5:25 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	50 min
Aug 5, 4:37 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	38 min
Aug 5, 4:58 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	17 min
Aug 6, 6:10 PM MDT	Severe Thunderstorm Warning	UNR	Crook	35 min
Aug 6, 6:43 PM MDT	Severe Thunderstorm Warning	UNR	Crook	47 min
Aug 6, 7:13 PM MDT	Severe Thunderstorm Warning	UNR	Crook	47 min
Aug 10, 4:06 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	24 min
Aug 13, 2:06 PM MDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	54 min
Aug 13, 2:26 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	21 min
Aug 13, 2:57 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook, Weston	63 min
Aug 13, 3:43 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook, Weston	62 min
Aug 15, 4:55 PM MDT	Severe Thunderstorm Warning	UNR	Crook, Weston	50 min
Aug 15, 6:52 PM MDT	Severe Thunderstorm Warning	UNR	Crook	38 min
Aug 16, 8:49 PM MDT	Severe Thunderstorm Warning	UNR	Crook	56 min
Aug 16, 9:00 PM MDT	Severe Thunderstorm Warning	UNR	Weston	60 min
Aug 16, 9:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook, Weston	50 min
Aug 16, 10:00 PM MDT	Severe Thunderstorm Warning	UNR	Crook	30 min
Aug 21, 5:49 PM MDT	Severe Thunderstorm Warning	RIW	Johnson, Washakie	26 min
Aug 21, 6:09 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	36 min
Aug 21, 6:44 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	19 min
Aug 28, 1:25 PM MDT	Severe Thunderstorm Warning	CYS	Platte	50 min
Aug 28, 2:12 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	30 min
Sep 10, 5:58 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	32 min
Sep 10, 9:16 PM MDT	Severe Thunderstorm Warning	UNR	Weston	15 min
Sep 10, 10:14 PM MDT	Severe Thunderstorm Warning Considerable damage threat	RIW	Fremont	31 min
Sep 11, 3:41 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	34 min
Sep 11, 5:18 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	27 min
Sep 11, 5:20 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Laramie	25 min
Sep 12, 4:03 PM MDT	Severe Thunderstorm Warning	UNR	Weston	57 min
Sep 12, 4:33 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	27 min
Sep 12, 4:39 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Weston	43 min
Sep 12, 4:58 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	11 min
Sep 12, 5:42 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	33 min
Sep 15, 6:06 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Crook, Weston	39 min
Sep 16, 3:50 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	25 min
Oct 15, 6:49 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	41 min
Oct 15, 7:22 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	38 min
Oct 15, 7:26 PM MDT	Severe Thunderstorm Warning	CYS	Platte	49 min
Oct 15, 7:32 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	43 min
Oct 15, 7:48 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	57 min
Oct 15, 8:14 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	46 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 2024 2026

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.