Alert archive / Montana / Mesoscale Discussions

Mesoscale Discussions in Montana, 2021

47 mesoscale discussions 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 mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

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

Mesoscale Discussions
47
Busiest month
June21 mesoscale discussions
Busiest day
June 10, 20217 mesoscale discussions

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
May 7, 2:25 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Gallatin, Golden Valley, Jefferson, Madison and 5 more2 hr
May 20, 12:58 PM MDTMesoscale DiscussionSPCCarter, Powder River3 hr
May 28, 3:55 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Carter, Custer, Fallon, Powder River and 4 more2 hr
Jun 3, 4:58 PM MDTMesoscale DiscussionSPCCascade, Chouteau, Deer Lodge, Granite, Lake, Lewis and Clark and 7 more3 hr
Jun 4, 1:59 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson and 7 more2 hr
Jun 4, 8:10 PM MDTMesoscale DiscussionSPCCuster, Dawson, Garfield, Golden Valley, Judith Basin, Musselshell and 8 more2 hr
Jun 5, 2:27 PM MDTMesoscale DiscussionSPCCarbon, Gallatin, Golden Valley, Musselshell, Park, Stillwater and 4 more2 hr
Jun 8, 2:39 PM MDTMesoscale DiscussionSPCCuster, Dawson, Garfield, McCone, Prairie, Richland and 5 more3 hr
Jun 8, 6:15 PM MDTMesoscale DiscussionSPCCarter, Custer, Daniels, Dawson, Fallon, McCone and 8 more90 min
Jun 9, 4:43 PM MDTMesoscale DiscussionSPCDeer Lodge, Granite, Lake, Lewis and Clark, Missoula, Powell and 2 more92 min
Jun 9, 5:05 PM MDTMesoscale DiscussionSPCBlaine, Cascade, Chouteau, Fergus, Hill, Judith Basin and 2 more85 min
Jun 9, 8:34 PM MDTMesoscale DiscussionSPCBlaine, Chouteau, Fergus, Hill, Judith Basin, Petroleum and 1 more86 min
Jun 9, 10:51 PM MDTMesoscale DiscussionSPCBlaine, Fergus, Petroleum, Phillips84 min
Jun 10, 1:47 PM MDTMesoscale DiscussionSPCBlaine, Fergus, Golden Valley, Musselshell, Petroleum, Phillips and 4 more88 min
Jun 10, 1:56 PM MDTMesoscale DiscussionSPCDaniels, Richland, Roosevelt, Sheridan, Valley, Wibaux94 min
Jun 10, 2:51 PM MDTMesoscale DiscussionSPCCarter114 min
Jun 10, 4:36 PM MDTMesoscale DiscussionSPCFallon, Richland, Roosevelt, Sheridan, Wibaux114 min
Jun 10, 4:48 PM MDTMesoscale DiscussionSPCGarfield, Golden Valley, Musselshell, Petroleum, Phillips, Treasure and 2 more87 min
Jun 10, 7:30 PM MDTMesoscale DiscussionSPCDaniels, Richland, Roosevelt, Sheridan, Wibaux2 hr
Jun 14, 2:27 PM MDTMesoscale DiscussionSPCBroadwater, Carbon, Cascade, Chouteau, Deer Lodge, Fergus and 17 more2 hr
Jun 19, 3:58 PM MDTMesoscale DiscussionSPCCarter, Fallon92 min
Jun 23, 4:33 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Golden Valley, Musselshell, Rosebud, Stillwater and 3 more117 min
Jun 24, 1:11 PM MDTMesoscale DiscussionSPCCascade, Flathead, Glacier, Lewis and Clark, Pondera, Teton2 hr
Jun 24, 2:37 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Garfield, McCone and 5 more83 min
Jul 4, 6:11 PM MDTMesoscale DiscussionSPCCarter, Powder River2 hr
Jul 5, 10:49 PM MDTMesoscale DiscussionSPCLiberty, Toole116 min
Jul 6, 2:37 PM MDTMesoscale DiscussionSPCBig Horn, Fergus, Golden Valley, Judith Basin, Musselshell, Petroleum and 6 more83 min
Jul 6, 6:40 PM MDTMesoscale DiscussionSPCBlaine, Fergus, Garfield, Hill, Musselshell, Petroleum and 4 more95 min
Jul 6, 10:27 PM MDTMesoscale DiscussionSPCCuster, Garfield, Phillips, Powder River, Rosebud93 min
Jul 7, 2:03 PM MDTMesoscale DiscussionSPCBroadwater, Cascade, Custer, Fergus, Garfield, Golden Valley and 13 more117 min
Jul 7, 5:48 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Custer, Fergus, Garfield, Golden Valley and 8 more117 min
Jul 8, 1:15 PM MDTMesoscale DiscussionSPCDaniels, Dawson, McCone, Phillips, Prairie, Richland and 2 more60 min
Jul 8, 2:34 PM MDTMesoscale DiscussionSPCDaniels, Dawson, Fallon, McCone, Richland, Roosevelt and 3 more86 min
Jul 9, 2:20 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Golden Valley, Stillwater, Sweet Grass, Yellowstone85 min
Jul 11, 2:53 PM MDTMesoscale DiscussionSPCBlaine, Glacier, Hill, Liberty, Toole2 hr
Jul 13, 2:21 PM MDTMesoscale DiscussionSPCBig Horn, Carbon, Powder River, Yellowstone84 min
Jul 21, 2:40 PM MDTMesoscale DiscussionSPCDeer Lodge, Flathead, Glacier, Granite, Jefferson, Lake and 8 more95 min
Jul 22, 1:50 PM MDTMesoscale DiscussionSPCBroadwater, Fergus, Garfield, Golden Valley, Judith Basin, Meagher and 5 more2 hr
Jul 22, 2:24 PM MDTMesoscale DiscussionSPCCarter, Fallon, Wibaux2 hr
Jul 22, 8:04 PM MDTMesoscale DiscussionSPCDaniels, Roosevelt, Sheridan116 min
Aug 4, 4:25 PM MDTMesoscale DiscussionSPCLiberty, Toole2 hr
Aug 16, 2:49 PM MDTMesoscale DiscussionSPCGallatin, Garfield, Golden Valley, Madison, Musselshell, Park and 6 more116 min
Aug 17, 2:21 PM MDTMesoscale DiscussionSPCBeaverhead, Big Horn, Broadwater, Carbon, Fergus, Gallatin and 15 more114 min
Aug 26, 2:06 PM MDTMesoscale DiscussionSPCBig Horn, Fergus, Garfield, Golden Valley, Musselshell, Petroleum and 3 more114 min
Aug 27, 2:55 PM MDTMesoscale DiscussionSPCCarter, Dawson, Fallon, Richland, Roosevelt, Sheridan and 1 more2 hr
Oct 13, 3:58 AM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Powder River, Prairie and 1 more6 hr
Dec 4, 1:46 PM MSTMesoscale DiscussionSPCDawson, McCone, Phillips, Richland, Roosevelt, Valley2 hr

By county

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

14 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 10, 20217mesoscale discussions
  2. July 7, 20214mesoscale discussions
  3. June 9, 20213mesoscale discussions
  4. June 5, 20212mesoscale discussions
  5. June 24, 20212mesoscale discussions
  6. July 6, 20212mesoscale discussions
  7. July 8, 20212mesoscale discussions
  8. July 22, 20212mesoscale discussions
  9. May 7, 20211mesoscale discussions
  10. May 20, 20211mesoscale discussions
  11. May 28, 20211mesoscale discussions
  12. June 3, 20211mesoscale discussions

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. Warning verification from the Mesonet's Cow. Rebuilt daily.