Alert archive / Montana / Severe Thunderstorm Warnings / 2023
Severe Thunderstorm Warnings in Montana, May 2023
45 severe thunderstorm warnings in May 2023. 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in May 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 45
- Busiest day
- May 26, 20239 severe thunderstorm warnings
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, 2:54 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 36 min |
| May 7, 3:42 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 33 min |
| May 7, 4:50 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 40 min |
| May 21, 4:45 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Sanders | 30 min |
| May 22, 12:06 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 24 min |
| May 22, 12:19 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 41 min |
| May 22, 12:58 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark, Teton | 47 min |
| May 22, 4:30 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 49 min |
| May 22, 4:48 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 27 min |
| May 22, 6:25 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum, Phillips | 31 min |
| May 23, 4:07 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 53 min |
| May 23, 7:09 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 51 min |
| May 24, 3:33 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 44 min |
| May 24, 3:36 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 54 min |
| May 24, 4:26 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 37 min |
| May 24, 4:37 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 53 min |
| May 24, 5:48 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 26 min |
| May 24, 6:29 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 31 min |
| May 24, 6:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 30 min |
| May 24, 7:05 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 55 min |
| May 25, 4:23 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 37 min |
| May 25, 5:02 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 43 min |
| May 25, 5:25 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 50 min |
| May 25, 5:27 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 33 min |
| May 25, 6:12 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 30 min |
| May 25, 7:14 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum, Phillips | 61 min |
| May 25, 7:35 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 38 min |
| May 25, 7:49 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 56 min |
| May 25, 8:09 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 41 min |
| May 25, 8:17 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland, Wibaux | 58 min |
| May 26, 3:24 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 51 min |
| May 26, 4:09 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 66 min |
| May 26, 5:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 46 min |
| May 26, 6:02 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 43 min |
| May 26, 7:00 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure | 60 min |
| May 26, 7:59 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure, Yellowstone | 31 min |
| May 27, 4:38 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 37 min |
| May 27, 4:42 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum, Phillips | 63 min |
| May 27, 5:01 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 41 min |
| May 27, 5:05 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Richland, Wibaux | 55 min |
| May 27, 5:42 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum, Phillips, Valley | 63 min |
| May 27, 6:01 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 59 min |
| May 27, 6:20 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 37 min |
| May 27, 6:23 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 67 min |
| May 28, 5:34 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 17 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garfield County7
- Carter County6
- Phillips County6
- Petroleum County5
- Valley County5
- Dawson County5
- Powder River County4
- Big Horn County4
- Custer County3
- Richland County3
- Wibaux County3
- Lewis and Clark County2
- McCone County2
- Musselshell County2
- Treasure County2
- Yellowstone County2
- Mineral County1
- Sanders County1
- Powell County1
- Cascade County1
- Teton County1
- Sweet Grass County1
- Fergus County1
- Golden Valley County1
- Gallatin County1
- Rosebud County1
- Fallon County1
- Prairie County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.