Alert archive / Montana / Mesoscale Discussions

Mesoscale Discussions in Montana, 2020

68 mesoscale discussions in 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 mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count in 2020. Tap one for its archive.

Mesoscale Discussions
68
Busiest month
July19 mesoscale discussions
Busiest day
July 23, 20204 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 3, 2:10 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Fergus, Garfield and 11 more2 hr
May 18, 5:23 PM MDTMesoscale DiscussionSPCCascade, Granite, Lewis and Clark, Pondera, Powell, Teton2 hr
May 19, 1:36 PM MDTMesoscale DiscussionSPCBeaverhead, Blaine, Broadwater, Cascade, Chouteau, Deer Lodge and 15 more114 min
May 19, 5:10 PM MDTMesoscale DiscussionSPCBroadwater, Cascade, Fergus, Gallatin, Jefferson, Judith Basin and 5 more2 hr
May 20, 1:43 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carter, Custer, Daniels, Dawson and 18 more92 min
May 20, 6:27 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carbon, Carter, Custer, Daniels and 19 more93 min
May 20, 9:10 PM MDTMesoscale DiscussionSPCDaniels, Phillips, Roosevelt, Valley95 min
May 23, 5:27 PM MDTMesoscale DiscussionSPCCarter93 min
May 29, 2:12 PM MDTMesoscale DiscussionSPCBeaverhead, Madison2 hr
May 30, 1:45 PM MDTMesoscale DiscussionSPCCarbon, Gallatin, Madison, Park90 min
May 30, 5:00 PM MDTMesoscale DiscussionSPCBroadwater, Cascade, Granite, Jefferson, Lewis and Clark, Meagher and 3 more90 min
May 30, 9:06 PM MDTMesoscale DiscussionSPCMineral, Sanders114 min
May 31, 2:29 PM MDTMesoscale DiscussionSPCBlaine, Daniels, Phillips, Valley2 hr
May 31, 2:35 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Dawson, Fallon, Powder River and 4 more115 min
May 31, 7:38 PM MDTMesoscale DiscussionSPCFallon, Wibaux97 min
Jun 2, 3:56 AM MDTMesoscale DiscussionSPCCarter, Fallon3 hr
Jun 4, 1:25 PM MDTMesoscale DiscussionSPCCarter, Powder River95 min
Jun 5, 1:46 PM MDTMesoscale DiscussionSPCBeaverhead, Deer Lodge, Granite, Ravalli, Silver Bow119 min
Jun 7, 2:59 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Garfield, McCone and 6 more2 hr
Jun 13, 2:21 PM MDTMesoscale DiscussionSPCDeer Lodge, Flathead, Glacier, Granite, Lake, Lewis and Clark and 8 more114 min
Jun 13, 5:19 PM MDTMesoscale DiscussionSPCCuster, Dawson, Garfield, McCone, Phillips, Prairie and 2 more116 min
Jun 21, 1:05 PM MDTMesoscale DiscussionSPCCarter, Fallon2 hr
Jun 24, 2:07 PM MDTMesoscale DiscussionSPCFlathead, Lincoln, Sanders2 hr
Jun 24, 2:29 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Carbon, Deer Lodge, Gallatin, Jefferson and 6 more2 hr
Jun 24, 4:28 PM MDTMesoscale DiscussionSPCFlathead, Glacier, Lake, Pondera, Teton62 min
Jun 27, 2:53 PM MDTMesoscale DiscussionSPCBlaine, Hill97 min
Jun 27, 6:07 PM MDTMesoscale DiscussionSPCDaniels, Valley113 min
Jun 28, 1:11 PM MDTMesoscale DiscussionSPCCarter, Powder River2 hr
Jun 28, 5:18 PM MDTMesoscale DiscussionSPCCarter, Powder River117 min
Jun 29, 2:44 PM MDTMesoscale DiscussionSPCCarter, Fallon, Wibaux2 hr
Jun 29, 6:43 PM MDTMesoscale DiscussionSPCCarter, Custer, Daniels, Dawson, Fallon, McCone and 6 more2 hr
Jul 3, 2:47 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Garfield, McCone and 7 more118 min
Jul 3, 7:22 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, McCone, Prairie and 4 more113 min
Jul 4, 2:54 PM MDTMesoscale DiscussionSPCBroadwater, Cascade, Chouteau, Fergus, Gallatin, Golden Valley and 12 more2 hr
Jul 4, 6:50 PM MDTMesoscale DiscussionSPCCuster, Garfield, McCone, Phillips, Powder River, Prairie and 1 more55 min
Jul 4, 8:46 PM MDTMesoscale DiscussionSPCCarter, Daniels, Dawson, Fallon, McCone, Prairie and 5 more119 min
Jul 5, 3:00 PM MDTMesoscale DiscussionSPCBig Horn2 hr
Jul 6, 1:50 PM MDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Powder River, Prairie and 3 more115 min
Jul 6, 5:14 PM MDTMesoscale DiscussionSPCCarter, Custer, Fallon, Powder River, Rosebud91 min
Jul 7, 12:47 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Chouteau, Custer, Daniels, Dawson and 22 more2 hr
Jul 7, 5:13 PM MDTMesoscale DiscussionSPCCuster, Daniels, Dawson, Garfield, McCone, Prairie and 6 more92 min
Jul 10, 12:26 PM MDTMesoscale DiscussionSPCCarter, Fallon, Richland, Wibaux2 hr
Jul 10, 2:43 PM MDTMesoscale DiscussionSPCCarter, Daniels, Dawson, Fallon, Richland, Roosevelt and 2 more2 hr
Jul 12, 6:06 PM MDTMesoscale DiscussionSPCWibaux114 min
Jul 17, 2:41 PM MDTMesoscale DiscussionSPCBroadwater, Deer Lodge, Fergus, Gallatin, Golden Valley, Jefferson and 8 more2 hr
Jul 18, 12:16 PM MDTMesoscale DiscussionSPCRichland, Roosevelt, Sheridan119 min
Jul 23, 11:39 AM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson and 6 more2 hr
Jul 23, 1:59 PM MDTMesoscale DiscussionSPCCarter, Dawson, Fallon, Prairie, Richland, Wibaux2 hr
Jul 23, 4:54 PM MDTMesoscale DiscussionSPCRichland, Roosevelt, Sheridan, Wibaux2 hr
Jul 23, 5:24 PM MDTMesoscale DiscussionSPCCarbon, Chouteau, Fergus, Golden Valley, Judith Basin, Musselshell and 3 more2 hr
Aug 3, 12:20 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carbon, Fergus, Garfield, Golden Valley and 9 more55 min
Aug 3, 5:36 PM MDTMesoscale DiscussionSPCBeaverhead, Carbon, Gallatin, Golden Valley, Madison, Park and 4 more114 min
Aug 6, 1:53 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Carbon, Cascade, Chouteau, Deer Lodge and 22 more2 hr
Aug 11, 5:59 PM MDTMesoscale DiscussionSPCCarter2 hr
Aug 12, 5:16 PM MDTMesoscale DiscussionSPCRichland, Sheridan, Wibaux119 min
Aug 13, 10:28 PM MDTMesoscale DiscussionSPCFallon2 hr
Aug 19, 2:45 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson and 6 more2 hr
Aug 19, 3:05 PM MDTMesoscale DiscussionSPCBeaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson and 6 more115 min
Aug 20, 2:44 PM MDTMesoscale DiscussionSPCBlaine, Cascade, Chouteau, Fergus, Golden Valley, Hill and 11 more2 hr
Aug 25, 1:18 PM MDTMesoscale DiscussionSPCBeaverhead, Madison117 min
Aug 25, 5:48 PM MDTMesoscale DiscussionSPCBroadwater, Gallatin, Golden Valley, Madison, Meagher, Musselshell and 5 more117 min
Aug 26, 2:44 PM MDTMesoscale DiscussionSPCBeaverhead, Big Horn, Broadwater, Carbon, Deer Lodge, Gallatin and 13 more91 min
Aug 26, 7:04 PM MDTMesoscale DiscussionSPCBeaverhead, Deer Lodge, Gallatin, Madison, Park, Silver Bow116 min
Aug 27, 1:27 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Powder River, Rosebud3 hr
Aug 27, 4:52 PM MDTMesoscale DiscussionSPCCarter, Custer, Fallon, Powder River, Wibaux83 min
Oct 23, 4:36 PM MDTMesoscale DiscussionSPCBroadwater, Deer Lodge, Granite, Jefferson, Lake, Lewis and Clark and 5 more4 hr
Nov 7, 7:53 PM MSTMesoscale DiscussionSPCBroadwater, Cascade, Chouteau, Glacier, Judith Basin, Lewis and Clark and 5 more6 hr
Nov 8, 9:27 AM MSTMesoscale DiscussionSPCBlaine, Fergus, Garfield, Hill, Musselshell, Petroleum and 4 more5 hr

By county

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

16 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 23, 20204mesoscale discussions
  2. May 31, 20203mesoscale discussions
  3. June 24, 20203mesoscale discussions
  4. June 28, 20203mesoscale discussions
  5. July 5, 20203mesoscale discussions
  6. August 27, 20203mesoscale discussions
  7. May 19, 20202mesoscale discussions
  8. May 21, 20202mesoscale discussions
  9. May 30, 20202mesoscale discussions
  10. June 13, 20202mesoscale discussions
  11. July 4, 20202mesoscale discussions
  12. July 6, 20202mesoscale discussions

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.