Alert archive / Montana / Heat Advisories
Heat Advisories in Montana, 2021
18 heat advisories 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Heat Advisories
- 18
- Busiest month
- June10 heat advisories
- Busiest day
- June 3, 20212 heat advisories
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 1, 1:55 PM MDT | Heat Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 55 hr |
| Jun 3, 2:32 AM MDT | Heat Advisory | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 18 hr |
| Jun 3, 2:44 AM MDT | Heat Advisory | TFX | 18 hr | |
| Jun 4, 2:19 AM MDT | Heat Advisory | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 3 more | 18 hr |
| Jun 13, 1:10 PM MDT | Heat Advisory | GGW | Garfield, Petroleum, Phillips, Valley | 35 hr |
| Jun 13, 2:04 PM MDT | Heat Advisory | TFX | 54 hr | |
| Jun 14, 3:02 AM MDT | Heat Advisory | GGW | Daniels, Sheridan | 42 hr |
| Jun 24, 2:14 PM MDT | Heat Advisory | MSO | Flathead, Granite, Lake, Missoula, Powell, Ravalli and 1 more | 7 days |
| Jun 27, 3:27 AM MDT | Heat Advisory | TFX | 6 days | |
| Jun 30, 1:34 PM MDT | Heat Advisory | BYZ | Big Horn, Carbon, Carter, Fallon, Golden Valley, Musselshell and 4 more | 4 days |
| Jul 3, 3:13 AM MDT | Heat Advisory | GGW | Dawson, Wibaux | 45 hr |
| Jul 11, 3:23 AM MDT | Heat Advisory | GGW | Garfield, Petroleum, Phillips, Valley | 18 hr |
| Jul 16, 2:14 PM MDT | Heat Advisory | TFX | 3 days | |
| Jul 16, 3:14 PM MDT | Heat Advisory | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 3 days |
| Jul 26, 9:56 AM MDT | Heat Advisory | TFX | 38 hr | |
| Jul 29, 2:58 PM MDT | Heat Advisory | MSO | Flathead, Lincoln, Mineral, Missoula, Sanders | 54 hr |
| Aug 15, 1:30 PM MDT | Heat Advisory | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Musselshell and 4 more | 55 hr |
| Aug 15, 2:32 PM MDT | Heat Advisory | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 1 more | 54 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garfield County5
- Petroleum County5
- Dawson County4
- Valley County4
- Wibaux County4
- Flathead County3
- Missoula County3
- Sanders County3
- McCone County3
- Phillips County3
- Prairie County3
- Richland County3
- Carbon County3
- Granite County2
- Lake County2
- Lincoln County2
- Mineral County2
- Powell County2
- Ravalli County2
- Daniels County2
- Roosevelt County2
- Sheridan County2
- Big Horn County2
- Carter County2
- Fallon County2
- Golden Valley County2
- Musselshell County2
- Powder River County2
- Rosebud County2
- Stillwater County2
- Yellowstone County2
- Deer Lodge County1
- Silver Bow County1
- Park County1
- Sweet Grass County1
- Wheatland County1
- Custer County1
- Treasure 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.