Alert archive / Montana / Severe Thunderstorm Warnings / 2020

Severe Thunderstorm Warnings in Montana, August 2020

40 severe thunderstorm warnings in August 2020. 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 August 2020. Tap one for its archive.

Severe Thunderstorm Warnings
40
Busiest day
August 20, 202010 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.

IssuedProductOfficeCountiesLasted
Jul 31, 6:11 PM MDTSevere Thunderstorm WarningTFXHill34 min
Jul 31, 6:26 PM MDTSevere Thunderstorm WarningTFXLiberty34 min
Jul 31, 6:59 PM MDTSevere Thunderstorm WarningTFXLiberty31 min
Jul 31, 7:27 PM MDTSevere Thunderstorm WarningTFXLiberty48 min
Aug 3, 12:19 PM MDTSevere Thunderstorm WarningTFXJudith Basin41 min
Aug 3, 5:49 PM MDTSevere Thunderstorm WarningTFXGallatin, Madison26 min
Aug 3, 6:02 PM MDTSevere Thunderstorm WarningTFXFergus28 min
Aug 3, 6:54 PM MDTSevere Thunderstorm WarningBYZPark36 min
Aug 3, 9:19 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone41 min
Aug 6, 3:30 PM MDTSevere Thunderstorm WarningTFXFergus19 min
Aug 6, 4:57 PM MDTSevere Thunderstorm WarningBYZPowder River49 min
Aug 6, 5:09 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone51 min
Aug 6, 6:14 PM MDTSevere Thunderstorm WarningBYZCarter76 min
Aug 6, 7:28 PM MDTSevere Thunderstorm WarningTFXCascade32 min
Aug 6, 8:07 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley38 min
Aug 11, 8:19 PM MDTSevere Thunderstorm WarningBYZCarter21 min
Aug 12, 4:17 PM MDTSevere Thunderstorm WarningGGWSheridan13 min
Aug 12, 5:33 PM MDTSevere Thunderstorm WarningGGWRoosevelt, Sheridan42 min
Aug 12, 6:13 PM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt48 min
Aug 19, 6:16 PM MDTSevere Thunderstorm WarningTFXMadison29 min
Aug 20, 2:22 PM MDTSevere Thunderstorm WarningTFXLewis and Clark, Teton38 min
Aug 20, 2:55 PM MDTSevere Thunderstorm WarningTFXCascade, Lewis and Clark, Pondera, Teton, Toole35 min
Aug 20, 3:28 PM MDTSevere Thunderstorm WarningTFXCascade, Chouteau, Liberty, Pondera, Teton, Toole32 min
Aug 20, 4:17 PM MDTSevere Thunderstorm WarningTFXCascade28 min
Aug 20, 4:54 PM MDTSevere Thunderstorm WarningTFXJudith Basin21 min
Aug 20, 4:58 PM MDTSevere Thunderstorm WarningTFXBroadwater, Lewis and Clark, Meagher32 min
Aug 20, 5:14 PM MDTSevere Thunderstorm WarningTFXJudith Basin31 min
Aug 20, 5:35 PM MDTSevere Thunderstorm WarningTFXMeagher25 min
Aug 20, 5:37 PM MDTSevere Thunderstorm WarningTFXFergus, Judith Basin38 min
Aug 20, 7:42 PM MDTSevere Thunderstorm WarningGGWPhillips48 min
Aug 20, 8:04 PM MDTSevere Thunderstorm WarningBYZGolden Valley26 min
Aug 20, 8:49 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Phillips, Valley56 min
Aug 20, 9:12 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Prairie63 min
Aug 20, 9:43 PM MDTSevere Thunderstorm WarningGGWDaniels, Dawson, Garfield, McCone, Prairie, Richland and 2 more62 min
Aug 20, 10:43 PM MDTSevere Thunderstorm WarningBYZCuster47 min
Aug 20, 10:43 PM MDTSevere Thunderstorm WarningGGWDaniels, Dawson, McCone, Prairie, Richland, Roosevelt and 3 more62 min
Aug 25, 10:00 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Prairie60 min
Aug 26, 5:51 PM MDTSevere Thunderstorm WarningTFXMadison24 min
Aug 26, 5:53 PM MDTSevere Thunderstorm WarningMSORavalli22 min
Aug 27, 4:03 PM MDTSevere Thunderstorm WarningGGWDaniels, Roosevelt, Valley28 min

By county

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

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.