Alert archive / Montana / Severe Thunderstorm Warnings / 2018

Severe Thunderstorm Warnings in Montana, May 2018

91 severe thunderstorm warnings in May 2018. 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 2018. Tap one for its archive.

Severe Thunderstorm Warnings: 91
Busiest day: May 31, 201819 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 6, 6:40 PM MDT	Severe Thunderstorm Warning	MSO	Missoula	35 min
May 7, 2:04 PM MDT	Severe Thunderstorm Warning	BYZ	Treasure, Yellowstone	56 min
May 7, 3:00 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Treasure, Yellowstone	60 min
May 8, 6:49 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	26 min
May 9, 5:33 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	27 min
May 9, 6:01 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Stillwater	29 min
May 10, 4:35 PM MDT	Severe Thunderstorm Warning	TFX	Hill	40 min
May 10, 5:12 PM MDT	Severe Thunderstorm Warning	TFX	Hill	48 min
May 10, 6:00 PM MDT	Severe Thunderstorm Warning	TFX	Hill	15 min
May 16, 3:35 PM MDT	Severe Thunderstorm Warning	TFX	Blaine, Hill	25 min
May 16, 3:59 PM MDT	Severe Thunderstorm Warning	TFX	Blaine, Hill	24 min
May 16, 7:48 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	57 min
May 17, 3:13 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	29 min
May 17, 3:15 PM MDT	Severe Thunderstorm Warning	GGW	Valley	30 min
May 17, 4:25 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	50 min
May 17, 5:10 PM MDT	Severe Thunderstorm Warning	GGW	Valley	50 min
May 17, 5:18 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	19 min
May 17, 5:49 PM MDT	Severe Thunderstorm Warning	GGW	Valley	41 min
May 17, 5:51 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Powder River	24 min
May 17, 6:31 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	29 min
May 17, 7:03 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	38 min
May 17, 7:30 PM MDT	Severe Thunderstorm Warning	GGW	McCone	60 min
May 17, 8:29 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone	61 min
May 17, 8:43 PM MDT	Severe Thunderstorm Warning	GGW	McCone	43 min
May 21, 6:57 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	33 min
May 22, 4:37 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	38 min
May 22, 6:07 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	38 min
May 22, 6:18 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	43 min
May 22, 7:49 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	41 min
May 22, 8:51 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon	54 min
May 23, 10:25 AM MDT	Severe Thunderstorm Warning	GGW	Richland, Roosevelt, Sheridan	50 min
May 23, 3:45 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	60 min
May 23, 3:49 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	56 min
May 23, 4:03 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	57 min
May 23, 4:12 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	48 min
May 23, 4:29 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	61 min
May 23, 4:42 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	63 min
May 23, 4:48 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone	57 min
May 23, 5:18 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	57 min
May 23, 5:41 PM MDT	Severe Thunderstorm Warning	GGW	McCone	64 min
May 23, 5:45 PM MDT	Severe Thunderstorm Warning	GGW	Prairie	60 min
May 23, 6:12 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud, Treasure, Yellowstone	63 min
May 23, 6:14 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	61 min
May 23, 6:18 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	57 min
May 23, 6:37 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	53 min
May 23, 6:38 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone, Prairie	37 min
May 23, 6:42 PM MDT	Severe Thunderstorm Warning	GGW	McCone	33 min
May 23, 6:44 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	61 min
May 23, 6:55 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Prairie	50 min
May 23, 7:00 PM MDT	Severe Thunderstorm Warning	GGW	Prairie	37 min
May 23, 7:16 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Powder River	59 min
May 23, 7:18 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Richland	57 min
May 23, 8:02 PM MDT	Severe Thunderstorm Warning	GGW	Richland	43 min
May 23, 8:17 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Wibaux	29 min
May 26, 4:34 PM MDT	Severe Thunderstorm Warning	TFX	Beaverhead	20 min
May 26, 5:54 PM MDT	Severe Thunderstorm Warning	TFX	Jefferson	36 min
May 26, 5:55 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	65 min
May 26, 6:17 PM MDT	Severe Thunderstorm Warning	TFX	Jefferson, Madison	28 min
May 26, 6:35 PM MDT	Severe Thunderstorm Warning	TFX	Broadwater, Jefferson	25 min
May 26, 6:46 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	42 min
May 26, 6:46 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone	59 min
May 26, 6:52 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	53 min
May 26, 7:07 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	15 min
May 26, 7:29 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Sweet Grass, Wheatland	61 min
May 26, 7:42 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	63 min
May 26, 8:00 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Stillwater, Wheatland	60 min
May 26, 8:38 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone, Richland	67 min
May 26, 9:14 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Richland	61 min
May 26, 9:44 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone	61 min
May 26, 11:02 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone, Prairie, Richland, Wibaux	58 min
May 27, 12:52 AM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud	23 min
May 30, 3:20 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	40 min
May 30, 7:52 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, Petroleum	53 min
May 30, 10:08 PM MDT	Severe Thunderstorm Warning	GGW	Valley	52 min
May 30, 11:07 PM MDT	Severe Thunderstorm Warning	GGW	Richland	38 min
May 31, 12:52 PM MDT	Severe Thunderstorm Warning	MSO	Ravalli	38 min
May 31, 1:20 PM MDT	Severe Thunderstorm Warning	MSO	Missoula	40 min
May 31, 1:24 PM MDT	Severe Thunderstorm Warning	MSO	Ravalli	36 min
May 31, 2:19 PM MDT	Severe Thunderstorm Warning	MSO	Missoula	26 min
May 31, 2:33 PM MDT	Severe Thunderstorm Warning	TFX	Gallatin	13 min
May 31, 2:38 PM MDT	Severe Thunderstorm Warning	BYZ	Park, Sweet Grass	52 min
May 31, 2:47 PM MDT	Severe Thunderstorm Warning	MSO	Granite	43 min
May 31, 3:11 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Wheatland	34 min
May 31, 3:27 PM MDT	Severe Thunderstorm Warning	BYZ	Park, Sweet Grass	48 min
May 31, 3:44 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Wheatland	46 min
May 31, 4:16 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Stillwater	43 min
May 31, 4:27 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	48 min
May 31, 4:28 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	62 min
May 31, 4:39 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Lewis and Clark	36 min
May 31, 5:11 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Sweet Grass	37 min
May 31, 5:20 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	55 min

Nearby

Alerts in force now Tornadoes on record The radar archive 2017 2019

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.