Alert archive / Montana / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Montana, 2021
11 severe thunderstorm watches 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 11
- Busiest month
- June5 severe thunderstorm watches
- Busiest day
- June 10, 20212 severe thunderstorm watches
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 4:01 PM MDT | Severe Thunderstorm Watch | SPC | Custer, Dawson, Fallon, Fergus, Garfield, Golden Valley and 13 more | 7 hr |
| Jun 8, 3:52 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Custer, Daniels, Dawson, Fallon, Garfield and 8 more | 7 hr |
| Jun 9, 6:42 PM MDT | Severe Thunderstorm Watch | SPC | Blaine, Chouteau, Fergus, Hill, Judith Basin, Petroleum and 1 more | 5 hr |
| Jun 10, 2:52 PM MDT | Severe Thunderstorm Watch | SPC | Blaine, Custer, Dawson, Fergus, Garfield, Golden Valley and 7 more | 6 hr |
| Jun 10, 8:54 PM MDT | Severe Thunderstorm Watch | SPC | Daniels, Dawson, McCone, Richland, Roosevelt, Sheridan and 1 more | 5 hr |
| Jul 6, 5:00 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Custer, Musselshell, Powder River, Rosebud, Treasure and 1 more | 6 hr |
| Jul 7, 3:03 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Broadwater, Carbon, Carter, Cascade, Chouteau and 19 more | 8 hr |
| Jul 8, 5:32 PM MDT | Severe Thunderstorm Watch | SPC | Dawson, Prairie, Richland, Roosevelt, Wibaux | 47 min |
| Jul 13, 4:25 PM MDT | Severe Thunderstorm Watch | SPC | Powder River | 8 hr |
| Jul 22, 4:07 PM MDT | Severe Thunderstorm Watch | SPC | Daniels, Fergus, Garfield, Golden Valley, McCone, Musselshell and 6 more | 5 hr |
| Aug 6, 1:43 PM MDT | Severe Thunderstorm Watch | SPC | Carter | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Custer County5
- Dawson County5
- Fergus County5
- Garfield County5
- McCone County5
- Musselshell County5
- Petroleum County5
- Rosebud County5
- Golden Valley County4
- Prairie County4
- Richland County4
- Wibaux County4
- Roosevelt County4
- Fallon County3
- Judith Basin County3
- Treasure County3
- Wheatland County3
- Carter County3
- Daniels County3
- Sheridan County3
- Valley County3
- Phillips County3
- Powder River County3
- Meagher County2
- Park County2
- Sweet Grass County2
- Blaine County2
- Chouteau County2
- Big Horn County2
- Yellowstone County2
- Hill County1
- Broadwater County1
- Carbon County1
- Cascade County1
- Jefferson County1
- Lewis and Clark County1
- Stillwater County1
The busiest days
Days with the most alerts issued, by UTC date.
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.