Alert archive / Montana / Mesoscale Discussions / 2021
Mesoscale Discussions in Montana, May 2021
3 mesoscale discussions in May 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 May 2021. Tap one for its archive.
- Mesoscale Discussions
- 3
- Busiest day
- May 7, 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 |
|---|---|---|---|---|
| May 7, 2:25 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Broadwater, Gallatin, Golden Valley, Jefferson, Madison and 5 more | 2 hr |
| May 20, 12:58 PM MDT | Mesoscale Discussion | SPC | Carter, Powder River | 3 hr |
| May 28, 3:55 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Carter, Custer, Fallon, Powder River and 4 more | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Stillwater County2
- Carter County2
- Powder River County2
- Beaverhead County1
- Broadwater County1
- Gallatin County1
- Golden Valley County1
- Jefferson County1
- Madison County1
- Meagher County1
- Park County1
- Sweet Grass County1
- Wheatland County1
- Big Horn County1
- Carbon County1
- Custer County1
- Fallon County1
- Rosebud County1
- Treasure County1
- Yellowstone 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.