Alert archive / Montana / Flash Flood Warnings
Flash Flood Warnings in Montana, 2011
56 flash flood warnings in 2011. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Flash Flood Warnings
- 56
- Busiest month
- June22 flash flood warnings
- Busiest day
- June 7, 201111 flash flood warnings
Over time
By month
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 |
|---|---|---|---|---|
| Jan 17, 8:10 AM MST | Flash Flood Warning | MSO | Lincoln | 7 hr |
| Feb 3, 4:41 PM MST | Flash Flood Warning | MSO | Missoula | 46 min |
| Feb 14, 11:48 AM MST | Flash Flood Warning | GGW | Petroleum | 3 hr |
| Mar 15, 7:30 AM MDT | Flash Flood Warning | GGW | Petroleum | 6 hr |
| Mar 17, 3:10 PM MDT | Flash Flood Warning | GGW | Garfield | 6 hr |
| Apr 22, 10:52 AM MDT | Flash Flood Warning | TFX | Blaine | 54 hr |
| May 23, 3:39 PM MDT | Flash Flood Warning | BYZ | Stillwater | 2 hr |
| May 23, 4:06 PM MDT | Flash Flood Warning | BYZ | Big Horn | 3 hr |
| May 23, 7:21 PM MDT | Flash Flood Warning | BYZ | Stillwater | 4 hr |
| May 24, 1:44 AM MDT | Flash Flood Warning | BYZ | Big Horn | 3 hr |
| May 24, 3:52 PM MDT | Flash Flood Warning | BYZ | Big Horn, Yellowstone | 3 hr |
| May 24, 4:45 PM MDT | Flash Flood Warning | BYZ | Yellowstone | 3 hr |
| Jun 2, 4:49 PM MDT | Flash Flood Warning | GGW | Valley | 3 hr |
| Jun 6, 7:41 PM MDT | Flash Flood Warning | TFX | Cascade | 6 hr |
| Jun 6, 8:03 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Stillwater, Sweet Grass, Wheatland | 3 hr |
| Jun 6, 8:48 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Musselshell, Stillwater, Yellowstone | 3 hr |
| Jun 7, 12:21 AM MDT | Flash Flood Warning | GGW | Valley | 4 hr |
| Jun 7, 12:29 AM MDT | Flash Flood Warning | GGW | Roosevelt | 4 hr |
| Jun 7, 1:36 AM MDT | Flash Flood Warning | GGW | Roosevelt, Valley | 3 hr |
| Jun 7, 1:44 AM MDT | Flash Flood Warning | GGW | Roosevelt, Sheridan | 3 hr |
| Jun 7, 3:20 AM MDT | Flash Flood Warning | BYZ | Musselshell, Rosebud, Treasure | 3 hr |
| Jun 7, 9:22 AM MDT | Flash Flood Warning | GGW | Garfield, Valley | 3 hr |
| Jun 7, 11:51 AM MDT | Flash Flood Warning | GGW | Garfield, Petroleum, Phillips, Valley | 9 hr |
| Jun 7, 1:03 PM MDT | Flash Flood Warning | GGW | Roosevelt, Valley | 4 hr |
| Jun 11, 4:11 PM MDT | Flash Flood Warning | GGW | Valley | 86 min |
| Jun 11, 5:57 PM MDT | Flash Flood Warning | GGW | Valley | 3 hr |
| Jun 11, 10:08 PM MDT | Flash Flood Warning | GGW | Daniels, McCone, Roosevelt, Valley | 3 hr |
| Jun 13, 11:46 PM MDT | Flash Flood Warning | GGW | Prairie | 4 hr |
| Jun 17, 12:15 AM MDT | Flash Flood Warning | GGW | Richland, Roosevelt | 4 hr |
| Jun 17, 1:25 PM MDT | Flash Flood Warning | GGW | Valley | 3 hr |
| Jun 17, 5:52 PM MDT | Flash Flood Warning | GGW | Valley | 6 hr |
| Jun 17, 6:30 PM MDT | Flash Flood Warning | GGW | Daniels, Roosevelt, Sheridan | 8 hr |
| Jun 19, 7:14 PM MDT | Flash Flood Warning | GGW | Dawson, Richland, Wibaux | 3 hr |
| Jun 25, 1:06 AM MDT | Flash Flood Warning | BYZ | Custer | 96 min |
| Jul 2, 5:40 PM MDT | Flash Flood Warning | BYZ | Carter, Powder River | 2 hr |
| Jul 2, 8:30 PM MDT | Flash Flood Warning | GGW | Richland | 3 hr |
| Jul 2, 8:49 PM MDT | Flash Flood Warning | GGW | Dawson | 3 hr |
| Jul 6, 5:37 PM MDT | Flash Flood Warning | BYZ | Park | 3 hr |
| Jul 6, 5:39 PM MDT | Flash Flood Warning | BYZ | Carbon | 3 hr |
| Jul 6, 6:52 PM MDT | Flash Flood Warning | BYZ | Big Horn, Carbon | 115 min |
| Jul 6, 8:03 PM MDT | Flash Flood Warning | BYZ | Yellowstone | 98 min |
| Jul 7, 2:56 PM MDT | Flash Flood Warning | TFX | Fergus, Judith Basin | 3 hr |
| Jul 7, 3:08 PM MDT | Flash Flood Warning | BYZ | Wheatland | 3 hr |
| Jul 7, 7:14 PM MDT | Flash Flood Warning | TFX | Blaine | 3 hr |
| Jul 8, 1:52 AM MDT | Flash Flood Warning | GGW | Dawson, McCone | 4 hr |
| Jul 12, 5:01 PM MDT | Flash Flood Warning | BYZ | Big Horn | 2 hr |
| Jul 13, 3:47 PM MDT | Flash Flood Warning | TFX | Judith Basin | 3 hr |
| Jul 13, 6:54 PM MDT | Flash Flood Warning | TFX | Blaine, Chouteau, Hill | 5 hr |
| Jul 14, 7:19 PM MDT | Flash Flood Warning | GGW | Garfield | 3 hr |
| Jul 14, 10:29 PM MDT | Flash Flood Warning | BYZ | Rosebud | 3 hr |
| Jul 15, 9:40 PM MDT | Flash Flood Warning | GGW | Dawson, McCone, Prairie | 4 hr |
| Jul 16, 1:52 AM MDT | Flash Flood Warning | GGW | Dawson, McCone, Richland | 3 hr |
| Jul 19, 4:19 PM MDT | Flash Flood Warning | MSO | Flathead | 74 min |
| Jul 22, 3:06 PM MDT | Flash Flood Warning | GGW | Valley | 2 hr |
| Jul 22, 5:07 PM MDT | Flash Flood Warning | GGW | Dawson, Garfield, McCone, Prairie, Richland, Roosevelt and 3 more | 2 hr |
| Aug 5, 9:07 AM MDT | Flash Flood Warning | GGW | Dawson, Richland, Wibaux | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Valley County13
- Roosevelt County8
- Dawson County7
- Richland County6
- Garfield County5
- Big Horn County5
- McCone County5
- Stillwater County4
- Yellowstone County4
- Petroleum County3
- Blaine County3
- Sheridan County3
- Prairie County3
- Wibaux County3
- Golden Valley County2
- Wheatland County2
- Musselshell County2
- Rosebud County2
- Daniels County2
- Carbon County2
- Judith Basin County2
- Lincoln County1
- Missoula County1
- Cascade County1
- Sweet Grass County1
- Treasure County1
- Phillips County1
- Custer County1
- Carter County1
- Powder River County1
- Park County1
- Fergus County1
- Chouteau County1
- Hill County1
- Flathead County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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. Rebuilt daily.