Alert archive / Montana / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Montana, August 2017
19 severe thunderstorm warnings in August 2017. 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 August 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 19
- Busiest day
- August 2, 20179 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 |
|---|---|---|---|---|
| Aug 1, 4:30 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 33 min |
| Aug 1, 6:31 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 59 min |
| Aug 1, 7:11 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 64 min |
| Aug 1, 7:14 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 46 min |
| Aug 1, 8:08 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 52 min |
| Aug 1, 8:47 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Carbon | 58 min |
| Aug 1, 9:02 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 28 min |
| Aug 1, 9:14 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure, Yellowstone | 61 min |
| Aug 1, 10:00 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure, Yellowstone | 43 min |
| Aug 1, 10:40 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| Aug 11, 5:19 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 56 min |
| Aug 11, 6:12 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Wibaux | 63 min |
| Aug 11, 7:18 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Wibaux | 27 min |
| Aug 12, 3:05 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 23 min |
| Aug 13, 8:06 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 39 min |
| Aug 24, 8:26 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 34 min |
| Aug 24, 8:52 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Phillips, Valley | 53 min |
| Aug 24, 9:40 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Valley | 65 min |
| Aug 31, 4:52 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt, Sheridan | 53 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Big Horn County4
- Richland County4
- Garfield County3
- Valley County3
- Petroleum County2
- Rosebud County2
- Treasure County2
- Yellowstone County2
- Wibaux County2
- Roosevelt County2
- Powder River County1
- Fergus County1
- Carbon County1
- Musselshell County1
- Dawson County1
- Prairie County1
- Blaine County1
- Hill County1
- McCone County1
- Phillips County1
- Daniels County1
- Sheridan County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.