Alert archive / Colorado / Severe Thunderstorm Warnings / 2026

Severe Thunderstorm Warnings in Colorado, May 2026

76 severe thunderstorm warnings in May 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 May 2026. Tap one for its archive.

Severe Thunderstorm Warnings: 76
Busiest day: May 21, 202614 severe thunderstorm warnings

Over time

By day

Days in UTC, the clock the archive keeps.

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 9, 5:04 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Logan, Morgan, Weld	41 min
May 9, 5:10 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Weld	50 min
May 9, 5:45 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Weld	30 min
May 9, 7:20 PM MDT	Severe Thunderstorm Warning	BOU	Washington	40 min
May 9, 7:21 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Yuma	54 min
May 9, 8:07 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	68 min
May 9, 8:52 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Cheyenne	23 min
May 14, 2:38 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	52 min
May 14, 3:21 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Yuma	39 min
May 16, 2:27 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	48 min
May 16, 3:21 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	39 min
May 16, 3:51 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	39 min
May 16, 3:55 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	65 min
May 16, 3:58 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Washington	47 min
May 16, 3:59 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	31 min
May 16, 4:13 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	32 min
May 16, 4:24 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	51 min
May 16, 4:27 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Kit Carson	48 min
May 16, 4:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Kit Carson, Yuma	49 min
May 16, 4:47 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	58 min
May 16, 4:59 PM MDT	Severe Thunderstorm Warning	BOU	Logan	20 min
May 16, 5:34 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	56 min
May 17, 12:30 PM MDT	Severe Thunderstorm Warning	GJT	Rio Blanco	30 min
May 17, 12:59 PM MDT	Severe Thunderstorm Warning	GJT	Rio Blanco	31 min
May 17, 1:33 PM MDT	Severe Thunderstorm Warning	GJT	Moffat, Rio Blanco, Routt	27 min
May 17, 2:07 PM MDT	Severe Thunderstorm Warning	GJT	Moffat, Rio Blanco	23 min
May 17, 3:18 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	42 min
May 17, 3:36 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Cheyenne, Kit Carson	54 min
May 17, 4:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Cheyenne, Kit Carson	58 min
May 17, 4:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Cheyenne, Kit Carson	35 min
May 17, 5:26 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Kit Carson	63 min
May 20, 7:05 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	25 min
May 21, 2:51 PM MDT	Severe Thunderstorm Warning	PUB	Bent	12 min
May 21, 3:30 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe	30 min
May 21, 3:35 PM MDT	Severe Thunderstorm Warning	PUB	Baca, Las Animas	25 min
May 21, 3:57 PM MDT	Severe Thunderstorm Warning	BOU	Logan	33 min
May 21, 3:59 PM MDT	Severe Thunderstorm Warning	PUB	Baca	31 min
May 21, 4:16 PM MDT	Severe Thunderstorm Warning	PUB	Baca	29 min
May 21, 4:30 PM MDT	Severe Thunderstorm Warning	BOU	Logan	30 min
May 21, 4:33 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Washington	42 min
May 21, 5:01 PM MDT	Severe Thunderstorm Warning	PUB	Baca, Prowers	29 min
May 21, 5:26 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson, Yuma	34 min
May 21, 5:32 PM MDT	Severe Thunderstorm Warning	BOU	Logan	43 min
May 21, 5:34 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	14 min
May 21, 5:58 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	24 min
May 21, 6:25 PM MDT	Severe Thunderstorm Warning	BOU	Washington	35 min
May 21, 6:27 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Kit Carson	48 min
May 21, 6:30 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	30 min
May 21, 7:01 PM MDT	Severe Thunderstorm Warning	BOU	Washington	18 min
May 21, 7:09 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Adams, Arapahoe, Washington	36 min
May 21, 7:55 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	50 min
May 21, 8:39 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Lincoln	36 min
May 21, 8:40 PM MDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Kit Carson	39 min
May 21, 9:12 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	33 min
May 21, 9:42 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	24 min
May 21, 11:10 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	35 min
May 23, 3:41 PM MDT	Severe Thunderstorm Warning	PUB	Baca	49 min
May 23, 4:28 PM MDT	Severe Thunderstorm Warning	PUB	Baca	47 min
May 28, 4:15 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	30 min
May 28, 5:50 PM MDT	Severe Thunderstorm Warning	BOU	Clear Creek, Park	40 min
May 28, 6:25 PM MDT	Severe Thunderstorm Warning	BOU	Park	50 min
May 28, 8:09 PM MDT	Severe Thunderstorm Warning	PUB	Otero, Pueblo	25 min
May 29, 3:44 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	61 min
May 29, 4:08 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	82 min
May 29, 4:25 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	50 min
May 29, 4:48 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	42 min
May 29, 5:08 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	52 min
May 29, 5:15 PM MDT	Severe Thunderstorm Warning	PUB	Bent, Kiowa	30 min
May 30, 3:18 PM MDT	Severe Thunderstorm Warning	BOU	Weld	27 min
May 30, 3:57 PM MDT	Severe Thunderstorm Warning	BOU	Weld	33 min
May 30, 4:10 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	60 min
May 30, 5:01 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	44 min
May 30, 5:20 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	55 min
May 30, 5:33 PM MDT	Severe Thunderstorm Warning	BOU	Washington	27 min
May 30, 5:43 PM MDT	Severe Thunderstorm Warning	BOU	Logan	32 min
May 30, 6:28 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Phillips, Sedgwick	47 min

By county

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

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.