Alert archive / Montana / Winter Storm Warnings

Winter Storm Warnings in Montana, 2021

26 winter storm warnings in 2021. 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 winter storm warnings reaches back to 2005.

Winter Storm Warnings by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Winter Storm Warnings
26
Busiest month
December11 winter storm warnings
Busiest day
February 4, 20212 winter storm warnings

Over time

By month

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
Jan 2, 3:16 AM MSTWinter Storm WarningMSOMineral, Missoula, Sanders33 hr
Jan 12, 12:06 PM MSTWinter Storm WarningBYZCarbon, Park, Stillwater, Sweet Grass, Wheatland34 hr
Jan 18, 5:23 AM MSTWinter Storm WarningTFX16 hr
Feb 4, 9:28 AM MSTWinter Storm WarningBYZBig Horn, Carbon, Golden Valley, Musselshell, Park, Rosebud and 4 more3 days
Feb 4, 2:45 PM MSTWinter Storm WarningTFX3 days
Feb 5, 2:59 PM MSTWinter Storm WarningMSODeer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more50 hr
Feb 15, 7:29 AM MSTWinter Storm WarningMSOMissoula, Ravalli49 hr
Feb 21, 10:39 AM MSTWinter Storm WarningMSOFlathead, Lake9 hr
Feb 21, 7:30 PM MSTWinter Storm WarningMSOFlathead, Lake32 hr
Mar 19, 1:06 PM MDTWinter Storm WarningBYZCarbon, Park, Stillwater, Sweet Grass37 hr
Apr 17, 3:31 PM MDTWinter Storm WarningBYZBig Horn, Carbon, Park, Stillwater, Sweet Grass, Wheatland45 hr
May 18, 2:36 PM MDTWinter Storm WarningTFX66 hr
Oct 10, 2:29 AM MDTWinter Storm WarningTFX58 hr
Oct 10, 2:47 PM MDTWinter Storm WarningBYZBig Horn, Carbon, Carter, Custer, Fallon, Park and 4 more3 days
Oct 12, 3:24 AM MDTWinter Storm WarningGGWDawson, McCone, Prairie, Richland, Wibaux39 hr
Dec 3, 2:56 AM MSTWinter Storm WarningGGWDaniels, Phillips, Roosevelt, Sheridan, Valley48 hr
Dec 10, 2:19 AM MSTWinter Storm WarningTFX15 hr
Dec 10, 3:01 PM MSTWinter Storm WarningMSOFlathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more53 hr
Dec 11, 7:10 PM MSTWinter Storm WarningTFX16 hr
Dec 13, 1:58 PM MSTWinter Storm WarningTFX39 hr
Dec 14, 7:40 AM MSTWinter Storm WarningMSODeer Lodge, Granite, Powell, Silver Bow14 hr
Dec 17, 1:20 PM MSTWinter Storm WarningMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more64 hr
Dec 18, 3:08 AM MSTWinter Storm WarningTFX35 hr
Dec 20, 7:33 AM MSTWinter Storm WarningMSOMissoula, Ravalli3 hr
Dec 22, 1:52 PM MSTWinter Storm WarningBYZCarbon, Park, Stillwater, Sweet Grass54 hr
Dec 24, 12:32 PM MSTWinter Storm WarningMSOFlathead, Lake22 hr

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.

  1. February 4, 20212winter storm warnings
  2. October 10, 20212winter storm warnings
  3. December 10, 20212winter storm warnings
  4. January 2, 20211winter storm warnings
  5. January 12, 20211winter storm warnings
  6. January 18, 20211winter storm warnings
  7. February 5, 20211winter storm warnings
  8. February 15, 20211winter storm warnings
  9. February 21, 20211winter storm warnings
  10. February 22, 20211winter storm warnings
  11. March 19, 20211winter storm warnings
  12. April 17, 20211winter storm warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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. Rebuilt daily.