Alert archive / Montana / Mesoscale Discussions / 2017
Mesoscale Discussions in Montana, May 2017
6 mesoscale discussions 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in May 2017. Tap one for its archive.
- Mesoscale Discussions
- 6
- Busiest day
- May 6, 20171 mesoscale discussions
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, 3:42 PM MDT | Mesoscale Discussion | SPC | Broadwater, Cascade, Chouteau, Deer Lodge, Jefferson, Judith Basin and 8 more | 63 min |
| May 7, 5:35 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Carter, Custer, Musselshell, Powder River and 3 more | 2 hr |
| May 12, 1:35 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Broadwater, Cascade, Chouteau, Deer Lodge, Glacier and 10 more | 2 hr |
| May 13, 4:41 PM MDT | Mesoscale Discussion | SPC | Carter, Powder River | 64 min |
| May 15, 3:07 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Powder River, Prairie | 113 min |
| May 15, 6:34 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Fallon, Powder River, Prairie, Wibaux | 56 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Carter County4
- Powder River County4
- Custer County3
- Broadwater County2
- Cascade County2
- Chouteau County2
- Deer Lodge County2
- Jefferson County2
- Lewis and Clark County2
- Liberty County2
- Pondera County2
- Powell County2
- Silver Bow County2
- Teton County2
- Toole County2
- Prairie County2
- Judith Basin County1
- Meagher County1
- Big Horn County1
- Carbon County1
- Musselshell County1
- Rosebud County1
- Treasure County1
- Yellowstone County1
- Beaverhead County1
- Glacier County1
- Hill County1
- Madison County1
- Fallon County1
- Wibaux 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.