Alert archive / Montana / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Montana, May 2017
21 severe thunderstorm warnings in May 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 May 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 21
- Busiest day
- May 6, 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 |
|---|---|---|---|---|
| May 6, 1:26 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 34 min |
| May 6, 2:22 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Granite | 23 min |
| May 6, 2:42 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Granite | 33 min |
| May 6, 3:16 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 29 min |
| May 6, 3:41 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 34 min |
| May 6, 4:14 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 31 min |
| May 6, 4:45 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 15 min |
| May 6, 4:59 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Lewis and Clark | 46 min |
| May 6, 5:44 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin, Teton | 31 min |
| May 6, 6:14 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Pondera, Teton | 46 min |
| May 7, 3:17 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 28 min |
| May 7, 4:22 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 23 min |
| May 7, 4:46 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell, Stillwater, Yellowstone | 41 min |
| May 12, 3:30 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty | 30 min |
| May 12, 3:49 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty | 26 min |
| May 12, 4:03 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty | 27 min |
| May 12, 4:16 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty | 44 min |
| May 12, 4:51 PM MDT | Severe Thunderstorm Warning | TFX | Liberty, Toole | 39 min |
| May 12, 5:23 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty | 52 min |
| May 15, 6:05 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 25 min |
| May 15, 6:30 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Liberty County6
- Hill County5
- Cascade County4
- Lewis and Clark County3
- Chouteau County3
- Deer Lodge County2
- Granite County2
- Powell County2
- Teton County2
- Golden Valley County2
- Stillwater County2
- Ravalli County1
- Judith Basin County1
- Pondera County1
- Sweet Grass County1
- Musselshell County1
- Yellowstone County1
- Toole County1
- Custer County1
- Carter 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.