Alert archive / Montana / 2011
Weather alerts in Montana, April 2011
102 weather alerts in April 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in April 2011. Tap one for its archive.
- Alerts
- 102
- Warnings
- 36
- Watches
- 11
- Advisories
- 54
- Busiest day
- April 5, 20118 alerts
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 |
|---|---|---|---|---|
| Apr 1, 3:35 AM MDT | Winter Storm Watch | TFX | 24 hr | |
| Apr 1, 3:50 AM MDT | Winter Storm Watch | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 24 hr |
| Apr 1, 9:43 AM MDT | Areal Flood Advisory | GGW | Phillips, Valley | 67 hr |
| Apr 1, 11:31 AM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 3 more | 48 hr |
| Apr 1, 2:01 PM MDT | Winter Storm Warning | TFX | 49 hr | |
| Apr 2, 3:26 AM MDT | Winter Storm Warning | GGW | Daniels, Sheridan, Valley | 34 hr |
| Apr 2, 3:26 AM MDT | Winter Weather Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Richland, Roosevelt and 1 more | 34 hr |
| Apr 2, 2:58 PM MDT | Winter Weather Advisory | TFX | 27 hr | |
| Apr 2, 3:38 PM MDT | Lake Wind Advisory | MSO | Flathead, Lake, Sanders | 4 hr |
| Apr 2, 9:44 PM MDT | Areal Flood Advisory | GGW | Sheridan | 16 hr |
| Apr 3, 12:31 PM MDT | Flood Watch | GGW | Valley | 48 hr |
| Apr 3, 2:12 PM MDT | Areal Flood Warning | GGW | Sheridan | 71 hr |
| Apr 3, 2:37 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Mineral, Missoula, Ravalli and 1 more | 45 hr |
| Apr 4, 4:21 AM MDT | Areal Flood Warning | GGW | Phillips, Valley | 69 hr |
| Apr 4, 8:37 AM MDT | Winter Weather Advisory | TFX | 30 hr | |
| Apr 4, 10:47 AM MDT | Wind Advisory | BYZ | Park, Stillwater, Sweet Grass | 22 hr |
| Apr 5, 2:55 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 18 hr |
| Apr 5, 3:55 AM MDT | Lake Wind Advisory | MSO | Flathead, Lake, Sanders | 16 hr |
| Apr 5, 3:55 AM MDT | Wind Advisory | MSO | Deer Lodge, Granite, Lake, Missoula, Powell, Ravalli and 1 more | 16 hr |
| Apr 5, 7:59 AM MDT | Winter Storm Warning | TFX | 7 hr | |
| Apr 5, 12:45 PM MDT | Areal Flood Advisory | GGW | Valley | 25 hr |
| Apr 5, 1:02 PM MDT | River Flood Warning | GGW | Valley | 30 days |
| Apr 5, 1:02 PM MDT | River Flood Warning | GGW | Valley | 26 days |
| Apr 5, 2:13 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Mineral, Missoula, Powell, Ravalli and 2 more | 3 days |
| Apr 6, 9:54 AM MDT | River Flood Warning | GGW | Valley | 22 days |
| Apr 6, 10:15 AM MDT | Areal Flood Advisory | TFX | Blaine, Hill | 10 days |
| Apr 6, 1:55 PM MDT | Areal Flood Warning | GGW | Valley | 11 hr |
| Apr 6, 2:15 PM MDT | Winter Storm Warning | TFX | 52 hr | |
| Apr 6, 2:15 PM MDT | Winter Weather Advisory | TFX | 52 hr | |
| Apr 6, 3:40 PM MDT | Winter Storm Watch | BYZ | Carbon, Park, Stillwater, Sweet Grass | 12 hr |
| Apr 6, 3:40 PM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 53 hr |
| Apr 7, 1:04 AM MDT | Areal Flood Warning | GGW | Phillips, Valley | 7 days |
| Apr 7, 3:40 AM MDT | Winter Weather Advisory | GGW | Garfield, Petroleum, Phillips | 35 hr |
| Apr 7, 3:51 AM MDT | Winter Weather Advisory | BYZ | Big Horn, Golden Valley, Musselshell, Rosebud, Stillwater, Treasure | 38 hr |
| Apr 7, 9:45 AM MDT | Winter Weather Advisory | TFX | 32 hr | |
| Apr 7, 3:58 PM MDT | Areal Flood Advisory | TFX | Blaine | 11 days |
| Apr 7, 9:04 PM MDT | Areal Flood Advisory | GGW | Sheridan | 4 days |
| Apr 9, 10:11 PM MDT | River Flood Warning | GGW | Phillips, Valley | 11 days |
| Apr 10, 9:14 AM MDT | River Flood Watch | TFX | 50 hr | |
| Apr 10, 1:59 PM MDT | Winter Weather Advisory | MSO | Granite, Mineral, Missoula, Ravalli, Sanders | 31 hr |
| Apr 11, 2:14 PM MDT | Areal Flood Advisory | GGW | Daniels, Roosevelt, Valley | 5 days |
| Apr 11, 3:46 PM MDT | Areal Flood Advisory | GGW | Roosevelt, Sheridan | 5 days |
| Apr 12, 11:01 AM MDT | River Flood Warning | TFX | Blaine | 12 days |
| Apr 13, 5:22 AM MDT | Winter Storm Warning | TFX | 23 hr | |
| Apr 13, 5:22 AM MDT | Winter Weather Advisory | TFX | 26 hr | |
| Apr 13, 6:46 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 8 hr |
| Apr 13, 10:28 PM MDT | Areal Flood Warning | GGW | Phillips, Valley | 8 days |
| Apr 14, 3:46 AM MDT | Winter Weather Advisory | BYZ | Carter, Fallon | 11 hr |
| Apr 14, 4:12 AM MDT | Winter Weather Advisory | GGW | Daniels, Dawson, McCone, Phillips, Richland, Roosevelt and 3 more | 17 hr |
| Apr 14, 2:01 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Mineral, Missoula, Ravalli and 1 more | 22 hr |
| Apr 15, 1:59 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Mineral, Missoula, Ravalli and 1 more | 20 hr |
| Apr 16, 5:31 AM MDT | River Flood Watch | TFX | 30 hr | |
| Apr 16, 2:17 PM MDT | Winter Weather Advisory | MSO | Flathead, Lake | 21 hr |
| Apr 16, 2:24 PM MDT | Winter Weather Advisory | GGW | Daniels, Richland, Roosevelt, Sheridan, Valley | 24 hr |
| Apr 17, 3:46 AM MDT | Winter Weather Advisory | TFX | 25 hr | |
| Apr 17, 4:34 AM MDT | Winter Storm Watch | BYZ | Big Horn, Carbon, Custer, Fallon, Golden Valley, Musselshell and 5 more | 34 hr |
| Apr 17, 5:54 AM MDT | Winter Storm Warning | TFX | 30 hr | |
| Apr 17, 11:32 AM MDT | Winter Storm Warning | MSO | Flathead, Lake | 12 hr |
| Apr 17, 1:42 PM MDT | Areal Flood Advisory | GGW | Roosevelt, Sheridan | 71 hr |
| Apr 17, 3:09 PM MDT | Winter Storm Watch | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 1 more | 24 hr |
| Apr 18, 4:34 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Musselshell, Park, Stillwater, Sweet Grass and 1 more | 35 hr |
| Apr 18, 4:38 AM MDT | Winter Storm Warning | TFX | 37 hr | |
| Apr 18, 4:38 AM MDT | Winter Weather Advisory | TFX | 37 hr | |
| Apr 18, 12:49 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Mineral, Missoula, Powell and 2 more | 21 hr |
| Apr 18, 2:44 PM MDT | Winter Weather Advisory | BYZ | Big Horn, Carter, Custer, Fallon, Powder River, Rosebud and 1 more | 24 hr |
| Apr 18, 3:03 PM MDT | Winter Weather Advisory | GGW | Dawson, Garfield, McCone, Petroleum, Prairie, Richland and 1 more | 29 hr |
| Apr 20, 1:56 PM MDT | Winter Weather Advisory | TFX | 52 hr | |
| Apr 20, 2:13 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 3 more | 44 hr |
| Apr 20, 3:25 PM MDT | Winter Storm Watch | BYZ | Carbon, Park, Stillwater, Sweet Grass | 12 hr |
| Apr 21, 3:28 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 38 hr |
| Apr 21, 4:56 AM MDT | Winter Storm Warning | TFX | 37 hr | |
| Apr 21, 1:21 PM MDT | Areal Flood Warning | GGW | Phillips, Valley | 72 hr |
| Apr 21, 2:03 PM MDT | Winter Storm Warning | MSO | Flathead, Lake | 18 hr |
| Apr 21, 2:45 PM MDT | Winter Weather Advisory | GGW | Wibaux | 13 hr |
| Apr 22, 3:15 AM MDT | Winter Weather Advisory | BYZ | Carter, Custer, Fallon, Musselshell, Powder River, Rosebud and 1 more | 15 hr |
| Apr 22, 4:07 AM MDT | Winter Storm Warning | GGW | Petroleum, Wibaux | 16 hr |
| Apr 22, 4:07 AM MDT | Winter Weather Advisory | GGW | Dawson, Garfield, McCone, Phillips, Prairie, Richland | 11 hr |
| Apr 22, 10:17 AM MDT | Areal Flood Advisory | TFX | Fergus, Judith Basin | 4 days |
| Apr 22, 10:44 AM MDT | Areal Flood Warning | TFX | Blaine | 23 hr |
| Apr 22, 10:52 AM MDT | Flash Flood Warning | TFX | Blaine | 54 hr |
| Apr 23, 10:01 AM MDT | Areal Flood Advisory | TFX | Blaine | 48 hr |
| Apr 24, 1:02 PM MDT | Areal Flood Advisory | GGW | Phillips, Valley | 50 hr |
| Apr 25, 10:53 AM MDT | River Flood Watch | TFX | 49 hr | |
| Apr 25, 12:18 PM MDT | River Flood Warning | GGW | Phillips, Valley | 45 hr |
| Apr 25, 2:22 PM MDT | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Mineral, Missoula, Ravalli and 1 more | 20 hr |
| Apr 25, 2:35 PM MDT | Winter Weather Advisory | TFX | 21 hr | |
| Apr 25, 6:35 PM MDT | Special Weather Statement | MSO | Ravalli | 40 min |
| Apr 28, 3:13 AM MDT | Winter Weather Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 1 more | 51 hr |
| Apr 28, 3:41 AM MDT | Winter Storm Watch | TFX | 25 hr | |
| Apr 28, 3:00 PM MDT | Winter Storm Warning | TFX | 39 hr | |
| Apr 28, 9:29 PM MDT | Winter Weather Advisory | TFX | 7 hr | |
| Apr 29, 4:14 AM MDT | Winter Weather Advisory | TFX | 26 hr | |
| Apr 29, 2:39 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 29 hr |
| Apr 29, 3:16 PM MDT | Blizzard Warning | GGW | Dawson, Richland, Roosevelt, Sheridan, Wibaux | 12 hr |
| Apr 29, 3:16 PM MDT | Winter Weather Advisory | GGW | Daniels, McCone, Prairie, Roosevelt | 12 hr |
| Apr 29, 3:53 PM MDT | Blizzard Warning | BYZ | Fallon | 12 hr |
| Apr 29, 3:53 PM MDT | Winter Weather Advisory | BYZ | Carter, Custer, Powder River, Rosebud | 16 hr |
| Apr 30, 3:30 AM MDT | Winter Weather Advisory | GGW | Dawson, Richland, Roosevelt, Sheridan, Wibaux | 3 hr |
| Apr 30, 4:43 AM MDT | High Wind Warning | BYZ | Carter, Custer, Fallon, Powder River, Rosebud | 13 hr |
| Apr 30, 6:32 AM MDT | Blizzard Warning | GGW | Dawson, Richland, Roosevelt, Sheridan, Wibaux | 11 hr |
| Apr 30, 8:20 AM MDT | Blizzard Warning | BYZ | Fallon | 5 hr |
| Apr 30, 10:34 AM MDT | High Wind Warning | GGW | Daniels, Garfield, McCone, Prairie, Roosevelt, Valley | 7 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Special Weather Statement | 1 |
| Flooding | |
| Areal Flood Warning | 7 |
| Flash Flood Warning | 1 |
| River Flood Warning | 6 |
| Flood Watch | 1 |
| River Flood Watch | 3 |
| Areal Flood Advisory | 12 |
| Winter | |
| Blizzard Warning | 4 |
| Winter Storm Warning | 16 |
| Winter Storm Watch | 7 |
| Winter Weather Advisory | 37 |
| Wind and dust | |
| High Wind Warning | 2 |
| Lake Wind Advisory | 3 |
| Wind Advisory | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Valley County22
- Phillips County14
- Lake County14
- Flathead County13
- Roosevelt County12
- Sheridan County12
- Granite County12
- Missoula County11
- Ravalli County11
- Sanders County11
- Richland County10
- McCone County9
- Wibaux County9
- Mineral County9
- Stillwater County9
- Dawson County8
- Garfield County8
- Park County8
- Sweet Grass County8
- Daniels County7
- Petroleum County7
- Powell County7
- Carbon County7
- Fallon County7
- Prairie County6
- Blaine County6
- Rosebud County6
- Golden Valley County5
- Carter County5
- Custer County5
- Deer Lodge County4
- Silver Bow County4
- Musselshell County4
- Treasure County4
- Powder River County4
- Wheatland County3
- Big Horn County3
- Lincoln County2
- Hill County1
- Fergus County1
1 more counties
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. Warning verification from the Mesonet's Cow. Rebuilt daily.