Alert archive / Idaho / Severe Thunderstorm Warnings / 2026

Severe Thunderstorm Warnings in Idaho, May 2026

44 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: 44
Busiest day: May 29, 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 13, 1:28 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bonneville, Clark, Fremont, Jefferson, Madison	62 min
May 13, 1:46 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 4 more	59 min
May 13, 2:31 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Butte, Clark, Fremont, Jefferson	44 min
May 13, 2:43 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bannock, Bingham, Blaine, Bonneville, Butte, Caribou and 5 more	49 min
May 13, 3:03 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Cassia, Oneida	42 min
May 13, 3:30 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bannock, Bear Lake, Bingham, Bonneville, Caribou, Franklin and 6 more	45 min
May 13, 3:47 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Clark, Fremont, Jefferson	28 min
May 13, 4:05 PM MDT	Severe Thunderstorm Warning	PIH	Bear Lake, Caribou, Franklin	27 min
May 13, 4:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Clark, Fremont	30 min
May 13, 4:19 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bannock, Bear Lake, Bingham, Bonneville, Caribou, Fremont and 5 more	41 min
May 13, 5:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	PIH	Bannock, Bear Lake, Bingham, Bonneville, Caribou, Madison and 1 more	43 min
May 13, 5:15 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Butte, Cassia, Minidoka, Power	45 min
May 25, 3:48 PM MDT	Severe Thunderstorm Warning	BOI	Ada, Canyon	27 min
May 25, 4:00 PM MDT	Severe Thunderstorm Warning	BOI	Ada, Boise, Canyon, Elmore, Gem	45 min
May 25, 4:44 PM MDT	Severe Thunderstorm Warning	BOI	Boise, Gem, Payette, Valley, Washington	46 min
May 25, 5:28 PM MDT	Severe Thunderstorm Warning	BOI	Adams, Boise, Gem, Valley, Washington	47 min
May 25, 6:11 PM MDT	Severe Thunderstorm Warning	BOI	Adams, Valley	34 min
May 26, 3:00 PM MDT	Severe Thunderstorm Warning	PIH	Fremont, Teton	45 min
May 26, 3:41 PM MDT	Severe Thunderstorm Warning	PIH	Fremont	34 min
May 27, 3:19 PM MDT	Severe Thunderstorm Warning	BOI	Adams, Valley, Washington	41 min
May 27, 4:22 PM MDT	Severe Thunderstorm Warning	BOI	Adams	26 min
May 28, 3:17 PM MDT	Severe Thunderstorm Warning	BOI	Ada, Canyon, Elmore, Owyhee	43 min
May 28, 3:24 PM MDT	Severe Thunderstorm Warning	BOI	Adams, Washington	31 min
May 28, 3:38 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOI	Ada, Boise, Canyon, Elmore, Gem, Owyhee	37 min
May 28, 4:05 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOI	Adams, Washington	40 min
May 28, 4:09 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOI	Ada, Boise, Canyon, Elmore, Gem, Payette and 2 more	44 min
May 28, 4:18 PM MDT	Severe Thunderstorm Warning	MSO	Idaho	42 min
May 28, 4:45 PM MDT	Severe Thunderstorm Warning Considerable damage threat	MSO	Idaho	33 min
May 28, 4:48 PM MDT	Severe Thunderstorm Warning Considerable damage threat	OTX	Lewis	38 min
May 28, 5:43 PM MDT	Severe Thunderstorm Warning	OTX	Benewah, Shoshone	17 min
May 28, 6:09 PM MDT	Severe Thunderstorm Warning	MSO	Idaho	31 min
May 28, 6:11 PM MDT	Severe Thunderstorm Warning	OTX	Latah, Shoshone	49 min
May 28, 6:38 PM MDT	Severe Thunderstorm Warning	MSO	Clearwater	52 min
May 28, 6:47 PM MDT	Severe Thunderstorm Warning	MSO	Clearwater, Idaho	34 min
May 28, 6:49 PM MDT	Severe Thunderstorm Warning	OTX	Lewis	41 min
May 28, 7:29 PM MDT	Severe Thunderstorm Warning	OTX	Benewah, Latah	31 min
May 28, 7:35 PM MDT	Severe Thunderstorm Warning	MSO	Clearwater	30 min
May 28, 7:44 PM MDT	Severe Thunderstorm Warning	OTX	Benewah, Latah, Shoshone	46 min
May 28, 7:52 PM MDT	Severe Thunderstorm Warning	OTX	Shoshone	38 min
May 28, 8:00 PM MDT	Severe Thunderstorm Warning	OTX	Shoshone	45 min
May 28, 8:14 PM MDT	Severe Thunderstorm Warning	OTX	Shoshone	47 min
May 28, 8:29 PM MDT	Severe Thunderstorm Warning	OTX	Benewah, Kootenai, Shoshone	32 min
May 28, 8:41 PM MDT	Severe Thunderstorm Warning	OTX	Bonner, Shoshone	32 min
May 28, 9:22 PM MDT	Severe Thunderstorm Warning	OTX	Bonner	26 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.