Alert archive / Montana / Mesoscale Discussions / 2021
Mesoscale Discussions in Montana, August 2021
5 mesoscale discussions in August 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 August 2021. Tap one for its archive.
- Mesoscale Discussions
- 5
- Busiest day
- August 4, 20211 mesoscale discussions
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 |
|---|---|---|---|---|
| Aug 4, 4:25 PM MDT | Mesoscale Discussion | SPC | Liberty, Toole | 2 hr |
| Aug 16, 2:49 PM MDT | Mesoscale Discussion | SPC | Gallatin, Garfield, Golden Valley, Madison, Musselshell, Park and 6 more | 116 min |
| Aug 17, 2:21 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Big Horn, Broadwater, Carbon, Fergus, Gallatin and 15 more | 114 min |
| Aug 26, 2:06 PM MDT | Mesoscale Discussion | SPC | Big Horn, Fergus, Garfield, Golden Valley, Musselshell, Petroleum and 3 more | 114 min |
| Aug 27, 2:55 PM MDT | Mesoscale Discussion | SPC | Carter, Dawson, Fallon, Richland, Roosevelt, Sheridan and 1 more | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garfield County3
- Golden Valley County3
- Musselshell County3
- Petroleum County3
- Treasure County3
- Yellowstone County3
- Gallatin County2
- Madison County2
- Park County2
- Stillwater County2
- Sweet Grass County2
- Wheatland County2
- Big Horn County2
- Fergus County2
- Liberty County1
- Toole County1
- Beaverhead County1
- Broadwater County1
- Carbon County1
- Jefferson County1
- Judith Basin County1
- Meagher County1
- Silver Bow County1
- Rosebud County1
- Carter County1
- Dawson County1
- Fallon County1
- Richland County1
- Roosevelt County1
- Sheridan County1
- Wibaux County1
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.