Alert archive / Montana / 2009
Weather alerts in Montana, April 2009
54 weather alerts in April 2009, 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 2009. Tap one for its archive.
- Alerts
- 54
- Warnings
- 16
- Watches
- 11
- Advisories
- 25
- Busiest day
- April 28, 20098 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, 2:14 PM MDT | Winter Weather Advisory | MSO | Flathead, Lake, Mineral, Missoula, Sanders | 8 hr |
| Apr 1, 9:58 PM MDT | Winter Weather Advisory | MSO | Granite, Lake, Mineral, Missoula, Powell, Ravalli and 1 more | 32 hr |
| Apr 2, 4:23 AM MDT | Winter Storm Watch | BYZ | Carbon, Carter, Park, Powder River, Rosebud, Stillwater and 2 more | 12 hr |
| Apr 2, 4:31 AM MDT | Winter Storm Watch | TFX | 9 hr | |
| Apr 2, 2:00 PM MDT | Winter Weather Advisory | TFX | 19 hr | |
| Apr 2, 3:53 PM MDT | Winter Storm Warning | BYZ | Carbon, Carter, Park, Powder River, Stillwater, Sweet Grass and 1 more | 50 hr |
| Apr 2, 3:53 PM MDT | Winter Weather Advisory | BYZ | Big Horn, Carter, Golden Valley, Musselshell, Park, Powder River and 3 more | 42 hr |
| Apr 9, 11:19 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 7 hr |
| Apr 9, 3:50 PM MDT | Flood Watch | BYZ | Carter | 5 days |
| Apr 12, 3:23 PM MDT | Winter Storm Watch | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 36 hr |
| Apr 13, 2:51 PM MDT | Winter Storm Watch | TFX | 18 hr | |
| Apr 13, 3:37 PM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 54 hr |
| Apr 14, 9:02 AM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 30 hr |
| Apr 14, 9:06 AM MDT | Winter Storm Warning | TFX | 36 hr | |
| Apr 14, 9:06 AM MDT | Winter Weather Advisory | TFX | 36 hr | |
| Apr 14, 9:41 AM MDT | Winter Weather Advisory | BYZ | Golden Valley, Park, Wheatland | 30 hr |
| Apr 14, 11:06 AM MDT | Areal Flood Warning | BYZ | Carter | 5 days |
| Apr 14, 9:22 PM MDT | Winter Weather Advisory | GGW | Garfield, Petroleum, Phillips | 13 hr |
| Apr 21, 3:24 PM MDT | High Wind Watch | TFX | 13 hr | |
| Apr 22, 8:05 AM MDT | Red Flag Warning | GGW | Daniels, Dawson, McCone, Prairie, Richland, Roosevelt and 3 more | 12 hr |
| Apr 22, 8:10 AM MDT | Lake Wind Advisory | MSO | Flathead, Lake, Sanders | 10 hr |
| Apr 22, 9:03 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Valley | 11 hr |
| Apr 22, 9:12 AM MDT | Red Flag Warning | BYZ | Custer, Golden Valley, Musselshell, Rosebud, Treasure, Yellowstone | 11 hr |
| Apr 22, 2:45 PM MDT | Winter Storm Watch | BYZ | Carbon, Park, Stillwater, Sweet Grass | 14 hr |
| Apr 23, 3:49 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 13 hr |
| Apr 23, 4:26 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Musselshell, Park, Stillwater, Sweet Grass and 1 more | 30 hr |
| Apr 23, 4:26 AM MDT | Winter Weather Advisory | BYZ | Golden Valley, Musselshell, Park, Stillwater, Wheatland | 30 hr |
| Apr 23, 7:58 AM MDT | Winter Weather Advisory | MSO | Flathead, Lake | 7 hr |
| Apr 23, 8:13 AM MDT | Winter Weather Advisory | TFX | 7 hr | |
| Apr 23, 4:31 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 5 hr |
| Apr 23, 5:10 PM MDT | Winter Weather Advisory | TFX | 5 hr | |
| Apr 23, 10:16 PM MDT | Winter Storm Warning | TFX | 8 hr | |
| Apr 25, 2:28 PM MDT | Winter Weather Advisory | BYZ | Carbon, Carter, Fallon, Park, Powder River, Stillwater and 1 more | 37 hr |
| Apr 26, 4:00 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 17 hr |
| Apr 26, 5:09 AM MDT | Winter Weather Advisory | TFX | 13 hr | |
| Apr 26, 2:17 PM MDT | Winter Storm Watch | TFX | 15 hr | |
| Apr 26, 2:49 PM MDT | Winter Storm Watch | MSO | Flathead, Lake | 13 hr |
| Apr 27, 3:35 AM MDT | Winter Storm Watch | BYZ | Golden Valley, Wheatland | 31 hr |
| Apr 27, 3:54 AM MDT | Winter Storm Warning | MSO | Deer Lodge, Flathead, Granite, Lake, Powell, Silver Bow | 56 hr |
| Apr 27, 5:40 AM MDT | Winter Storm Warning | TFX | 70 hr | |
| Apr 27, 7:26 AM MDT | Winter Weather Advisory | MSO | Flathead, Lake, Sanders | 7 hr |
| Apr 27, 2:35 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Missoula, Powell, Ravalli, Silver Bow | 39 hr |
| Apr 27, 2:36 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 61 hr |
| Apr 27, 2:45 PM MDT | Winter Storm Watch | GGW | Daniels, Phillips, Sheridan, Valley | 24 hr |
| Apr 28, 5:06 AM MDT | Blizzard Warning | TFX | 24 hr | |
| Apr 28, 5:06 AM MDT | Winter Weather Advisory | TFX | 47 hr | |
| Apr 28, 10:40 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 23 hr |
| Apr 28, 10:40 AM MDT | Winter Weather Advisory | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 25 hr |
| Apr 28, 12:51 PM MDT | Wind Advisory | MSO | Flathead, Lake, Lincoln, Sanders | 7 hr |
| Apr 28, 2:46 PM MDT | Winter Storm Warning | GGW | Daniels, Phillips, Sheridan, Valley | 36 hr |
| Apr 28, 4:45 PM MDT | Mesoscale Discussion | SPC | Powder River | 3 hr |
| Apr 28, 5:45 PM MDT | Mesoscale Discussion | SPC | Glacier, Liberty, Pondera, Teton, Toole | 3 hr |
| Apr 29, 4:08 AM MDT | Winter Weather Advisory | GGW | Daniels, Phillips, Sheridan, Valley | 23 hr |
| Apr 29, 11:47 AM MDT | Winter Storm Warning | BYZ | Golden Valley, Wheatland | 10 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 | |
| Mesoscale Discussion | 2 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 12 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 20 |
| Wind and dust | |
| High Wind Watch | 1 |
| Lake Wind Advisory | 4 |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Park County14
- Stillwater County13
- Carbon County11
- Sweet Grass County11
- Wheatland County11
- Lake County8
- Golden Valley County8
- Flathead County7
- Valley County7
- Carter County6
- Phillips County6
- Sanders County5
- Granite County5
- Powell County5
- Powder River County5
- Musselshell County4
- Deer Lodge County4
- Silver Bow County4
- Garfield County4
- Daniels County4
- McCone County4
- Sheridan County4
- Missoula County3
- Rosebud County3
- Petroleum County3
- Mineral County2
- Ravalli County2
- Big Horn County1
- Dawson County1
- Prairie County1
- Richland County1
- Roosevelt County1
- Wibaux County1
- Custer County1
- Treasure County1
- Yellowstone County1
- Fallon County1
- Lincoln County1
- Glacier County1
- Liberty County1
3 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.