Alert archive / Montana / 2020
Weather alerts in Montana, September 2020
66 weather alerts in September 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2020. Tap one for its archive.
- Alerts
- 66
- Warnings
- 22
- Watches
- 21
- Advisories
- 13
- Busiest day
- September 23, 202010 alerts
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 |
|---|---|---|---|---|
| Sep 2, 9:44 AM MDT | High Wind Warning | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 10 hr |
| Sep 2, 11:13 AM MDT | Wind Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 9 hr |
| Sep 3, 3:14 AM MDT | Fire Weather Watch | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 32 hr |
| Sep 3, 11:14 AM MDT | Fire Weather Watch | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 25 hr |
| Sep 3, 2:50 PM MDT | Fire Weather Watch | TFX | Broadwater, Cascade, Chouteau, Fergus, Gallatin, Glacier and 9 more | 21 hr |
| Sep 3, 3:23 PM MDT | Fire Weather Watch | GGW | Garfield, Petroleum | 20 hr |
| Sep 4, 11:14 AM MDT | Red Flag Warning | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 57 hr |
| Sep 4, 11:21 AM MDT | Red Flag Warning | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 34 hr |
| Sep 4, 11:21 AM MDT | Fire Weather Watch | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 12 more | 16 hr |
| Sep 4, 11:21 AM MDT | Red Flag Warning | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 12 more | 33 hr |
| Sep 4, 12:29 PM MDT | Red Flag Warning | MSO | Beaverhead, Deer Lodge, Flathead, Glacier, Granite, Jefferson and 10 more | 34 hr |
| Sep 4, 12:34 PM MDT | High Wind Watch | MSO | Flathead, Lake, Sanders | 49 hr |
| Sep 4, 12:35 PM MDT | Winter Storm Watch | MSO | Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 1 more | 49 hr |
| Sep 5, 2:33 PM MDT | High Wind Watch | TFX | 24 hr | |
| Sep 5, 9:07 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 23 hr |
| Sep 6, 3:09 AM MDT | Winter Weather Advisory | BYZ | Big Horn, Carbon, Park, Stillwater, Sweet Grass, Wheatland | 51 hr |
| Sep 6, 3:31 AM MDT | Winter Weather Advisory | TFX | 41 hr | |
| Sep 6, 1:07 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 2 more | 35 hr |
| Sep 6, 1:09 PM MDT | High Wind Warning | MSO | Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 3 more | 35 hr |
| Sep 6, 1:09 PM MDT | Wind Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 30 hr |
| Sep 6, 8:05 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 25 hr |
| Sep 7, 3:15 AM MDT | Winter Storm Warning | BYZ | Big Horn, Carbon, Park, Stillwater, Sweet Grass | 26 hr |
| Sep 7, 2:12 PM MDT | Freeze Warning | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 19 hr |
| Sep 7, 8:41 PM MDT | Special Weather Statement | TFX | Madison | 79 min |
| Sep 12, 2:34 AM MDT | Fire Weather Watch | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 24 hr |
| Sep 12, 2:46 AM MDT | Fire Weather Watch | BYZ | Big Horn, Carbon, Gallatin, Golden Valley, Madison, Musselshell and 8 more | 24 hr |
| Sep 12, 3:47 AM MDT | Fire Weather Watch | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 12 more | 24 hr |
| Sep 12, 1:55 PM MDT | Fire Weather Watch | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 18 hr |
| Sep 13, 2:34 AM MDT | Fire Weather Watch | GGW | Dawson, McCone, Phillips, Prairie, Richland, Wibaux | 17 hr |
| Sep 13, 2:34 AM MDT | Red Flag Warning | GGW | Dawson, Garfield, McCone, Petroleum, Phillips, Prairie and 3 more | 40 hr |
| Sep 13, 3:11 AM MDT | Fire Weather Watch | BYZ | Carter, Custer, Fallon | 11 hr |
| Sep 13, 3:11 AM MDT | Red Flag Warning | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 42 hr |
| Sep 13, 3:17 AM MDT | Red Flag Warning | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 12 more | 40 hr |
| Sep 13, 7:40 AM MDT | Red Flag Warning | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 37 hr |
| Sep 16, 1:50 PM MDT | Fire Weather Watch | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 23 hr |
| Sep 17, 1:08 PM MDT | Red Flag Warning | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 32 hr |
| Sep 18, 1:53 PM MDT | Red Flag Warning | BYZ | Big Horn, Powder River, Rosebud, Treasure, Yellowstone | 31 hr |
| Sep 19, 2:01 PM MDT | Special Weather Statement | TFX | Beaverhead | 44 min |
| Sep 19, 3:04 PM MDT | Special Weather Statement | TFX | Beaverhead | 56 min |
| Sep 19, 3:07 PM MDT | Special Weather Statement | TFX | Madison | 53 min |
| Sep 19, 4:33 PM MDT | Special Weather Statement | TFX | Madison | 42 min |
| Sep 19, 5:31 PM MDT | Special Weather Statement | TFX | 44 min | |
| Sep 19, 8:13 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 25 hr |
| Sep 22, 1:46 PM MDT | Fire Weather Watch | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 24 hr |
| Sep 22, 2:07 PM MDT | Fire Weather Watch | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 24 hr |
| Sep 22, 2:46 PM MDT | Fire Weather Watch | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 12 more | 24 hr |
| Sep 22, 5:20 PM MDT | Special Weather Statement | TFX | Gallatin | 25 min |
| Sep 22, 6:06 PM MDT | Special Weather Statement | BYZ | Big Horn, Yellowstone | 39 min |
| Sep 23, 3:01 AM MDT | High Wind Watch | TFX | 11 hr | |
| Sep 23, 1:22 PM MDT | Red Flag Warning | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 31 hr |
| Sep 23, 1:56 PM MDT | High Wind Watch | TFX | 14 hr | |
| Sep 23, 1:56 PM MDT | High Wind Warning | TFX | 31 hr | |
| Sep 23, 2:06 PM MDT | Lake Wind Advisory | MSO | Flathead, Lake, Sanders | 29 hr |
| Sep 23, 2:17 PM MDT | Red Flag Warning | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 31 hr |
| Sep 23, 2:25 PM MDT | High Wind Watch | GGW | Phillips | 13 hr |
| Sep 23, 2:25 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 31 hr |
| Sep 23, 2:37 PM MDT | Red Flag Warning | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 11 more | 30 hr |
| Sep 24, 3:14 AM MDT | High Wind Warning | GGW | Phillips | 16 hr |
| Sep 25, 10:53 AM MDT | Red Flag Warning | BYZ | Big Horn, Carbon, Carter, Custer, Fallon, Gallatin and 11 more | 33 hr |
| Sep 25, 2:39 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 13 hr |
| Sep 25, 2:40 PM MDT | Red Flag Warning | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 1 more | 13 hr |
| Sep 25, 2:42 PM MDT | Red Flag Warning | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 1 more | 29 hr |
| Sep 25, 2:43 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 54 hr |
| Sep 26, 2:28 PM MDT | Special Weather Statement | GGW | Richland | 47 min |
| Sep 26, 3:51 PM MDT | Special Weather Statement | GGW | Richland | 39 min |
| Sep 30, 2:44 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 17 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Special Weather Statement | 10 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 5 |
| Lake Wind Advisory | 8 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 16 |
| Fire Weather Watch | 15 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Phillips County22
- Powell County18
- Garfield County16
- McCone County16
- Petroleum County16
- Madison County16
- Gallatin County15
- Valley County13
- Jefferson County13
- Deer Lodge County12
- Granite County12
- Silver Bow County12
- Big Horn County11
- Richland County9
- Carbon County9
- Park County9
- Stillwater County9
- Sweet Grass County9
- Yellowstone County9
- Powder River County8
- Rosebud County8
- Treasure County8
- Wheatland County8
- Beaverhead County8
- Glacier County8
- Lewis and Clark County8
- Flathead County8
- Lake County8
- Dawson County7
- Prairie County7
- Wibaux County7
- Carter County7
- Custer County7
- Fallon County7
- Golden Valley County7
- Musselshell County7
- Broadwater County7
- Cascade County7
- Chouteau County7
- Fergus County7
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.