Alert archive / Montana / 2018
Weather alerts in Montana, May 2018
534 weather alerts in May 2018, 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 May 2018. Tap one for its archive.
- Alerts
- 534
- Warnings
- 158
- Watches
- 40
- Advisories
- 40
- Busiest day
- May 31, 201860 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 |
|---|---|---|---|---|
| May 1, 4:37 PM MDT | Special Weather Statement | TFX | Chouteau | 23 min |
| May 1, 5:07 PM MDT | Special Weather Statement | TFX | 23 min | |
| May 1, 6:21 PM MDT | Special Weather Statement | TFX | Blaine | 24 min |
| May 4, 6:34 PM MDT | Special Weather Statement | GGW | McCone | 41 min |
| May 5, 1:36 PM MDT | Flood Watch | MSO | Flathead, Lincoln, Sanders | 14 hr |
| May 5, 2:52 PM MDT | Special Weather Statement | TFX | Beaverhead | 23 min |
| May 5, 3:17 PM MDT | Special Weather Statement | TFX | 28 min | |
| May 5, 4:29 PM MDT | Areal Flood Advisory | MSO | Missoula | 44 hr |
| May 6, 3:03 AM MDT | Areal Flood Warning | MSO | Lincoln | 5 days |
| May 6, 10:24 AM MDT | Areal Flood Warning | MSO | Missoula, Powell | 12 days |
| May 6, 11:24 AM MDT | Flood Watch | MSO | Missoula, Ravalli | 24 hr |
| May 6, 2:47 PM MDT | Special Weather Statement | MSO | Deer Lodge | 28 min |
| May 6, 2:50 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Deer Lodge, Granite, Mineral, Ravalli, Silver Bow | 2 hr |
| May 6, 2:51 PM MDT | Special Weather Statement | TFX | Beaverhead, Broadwater, Gallatin, Jefferson, Madison, Meagher | 54 min |
| May 6, 3:46 PM MDT | Special Weather Statement | TFX | Gallatin | 44 min |
| May 6, 3:47 PM MDT | Special Weather Statement | MSO | 28 min | |
| May 6, 3:57 PM MDT | Special Weather Statement | TFX | Jefferson | 33 min |
| May 6, 4:36 PM MDT | Special Weather Statement | TFX | Jefferson | 24 min |
| May 6, 4:43 PM MDT | Special Weather Statement | TFX | Judith Basin | 32 min |
| May 6, 4:52 PM MDT | Special Weather Statement | MSO | Silver Bow | 23 min |
| May 6, 4:53 PM MDT | Special Weather Statement | MSO | Ravalli | 67 min |
| May 6, 5:30 PM MDT | Special Weather Statement | MSO | Granite | 75 min |
| May 6, 5:31 PM MDT | Special Weather Statement | TFX | Broadwater | 59 min |
| May 6, 5:44 PM MDT | Special Weather Statement | BYZ | Park | 31 min |
| May 6, 6:14 PM MDT | Special Weather Statement | BYZ | Park | 46 min |
| May 6, 6:23 PM MDT | Special Weather Statement | MSO | Granite | 37 min |
| May 6, 6:40 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 35 min |
| May 6, 6:42 PM MDT | Special Weather Statement | TFX | Cascade | 33 min |
| May 6, 7:09 PM MDT | Special Weather Statement | MSO | Missoula | 66 min |
| May 6, 7:54 PM MDT | Special Weather Statement | BYZ | Yellowstone | 36 min |
| May 6, 7:54 PM MDT | Special Weather Statement | MSO | Mineral | 51 min |
| May 6, 7:55 PM MDT | Special Weather Statement | TFX | Judith Basin | 65 min |
| May 6, 8:08 PM MDT | Special Weather Statement | MSO | Lake | 67 min |
| May 6, 8:25 PM MDT | Special Weather Statement | TFX | Teton | 65 min |
| May 6, 8:41 PM MDT | Special Weather Statement | TFX | Fergus | 64 min |
| May 6, 9:19 PM MDT | Special Weather Statement | MSO | Lincoln | 41 min |
| May 7, 8:01 AM MDT | Areal Flood Warning | TFX | Lewis and Clark | 4 days |
| May 7, 10:51 AM MDT | Areal Flood Warning | MSO | Ravalli | 4 days |
| May 7, 10:56 AM MDT | Areal Flood Warning | MSO | Ravalli | 4 days |
| May 7, 11:19 AM MDT | Areal Flood Warning | MSO | Missoula, Ravalli | 6 days |
| May 7, 12:38 PM MDT | Areal Flood Warning | MSO | Missoula | 11 days |
| May 7, 1:05 PM MDT | Areal Flood Warning | MSO | Mineral, Missoula | 6 days |
| May 7, 1:52 PM MDT | Special Weather Statement | BYZ | Yellowstone | 38 min |
| May 7, 2:04 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure, Yellowstone | 56 min |
| May 7, 2:37 PM MDT | Special Weather Statement | BYZ | Big Horn | 53 min |
| May 7, 2:41 PM MDT | Special Weather Statement | GGW | Prairie | 49 min |
| May 7, 2:42 PM MDT | Areal Flood Advisory | MSO | Granite, Missoula, Powell | 67 hr |
| May 7, 2:49 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carter, Custer, Garfield, Musselshell, Petroleum and 5 more | 116 min |
| May 7, 3:00 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure, Yellowstone | 60 min |
| May 7, 3:26 PM MDT | Special Weather Statement | GGW | Prairie | 49 min |
| May 7, 4:11 PM MDT | Special Weather Statement | GGW | Prairie | 49 min |
| May 7, 4:17 PM MDT | Special Weather Statement | BYZ | Rosebud | 58 min |
| May 7, 4:20 PM MDT | Special Weather Statement | GGW | Wibaux | 40 min |
| May 7, 4:55 PM MDT | Special Weather Statement | GGW | Wibaux | 50 min |
| May 7, 5:21 PM MDT | Special Weather Statement | BYZ | Custer | 54 min |
| May 8, 10:43 AM MDT | Flood Watch | MSO | Flathead, Lake, Lincoln, Mineral, Missoula, Sanders | 45 hr |
| May 8, 12:40 PM MDT | Areal Flood Warning | TFX | Lewis and Clark | 59 hr |
| May 8, 3:18 PM MDT | Special Weather Statement | GGW | Garfield | 42 min |
| May 8, 3:42 PM MDT | Special Weather Statement | GGW | Phillips | 63 min |
| May 8, 4:47 PM MDT | Special Weather Statement | BYZ | Treasure | 43 min |
| May 8, 4:49 PM MDT | Special Weather Statement | GGW | Valley | 41 min |
| May 8, 5:30 PM MDT | Special Weather Statement | BYZ | Treasure | 60 min |
| May 8, 5:34 PM MDT | Special Weather Statement | GGW | Valley | 41 min |
| May 8, 5:44 PM MDT | Special Weather Statement | BYZ | Custer | 46 min |
| May 8, 6:14 PM MDT | Special Weather Statement | GGW | McCone | 46 min |
| May 8, 6:29 PM MDT | Special Weather Statement | BYZ | Custer | 61 min |
| May 8, 6:33 PM MDT | Special Weather Statement | BYZ | Big Horn | 57 min |
| May 8, 6:49 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 26 min |
| May 8, 6:57 PM MDT | Special Weather Statement | GGW | Garfield | 48 min |
| May 8, 7:10 PM MDT | Special Weather Statement | BYZ | Fallon | 50 min |
| May 8, 7:28 PM MDT | Special Weather Statement | BYZ | Custer | 47 min |
| May 8, 7:46 PM MDT | Special Weather Statement | GGW | Prairie | 44 min |
| May 8, 7:53 PM MDT | Special Weather Statement | GGW | Sheridan | 52 min |
| May 8, 8:01 PM MDT | Special Weather Statement | BYZ | Carter | 59 min |
| May 8, 8:10 PM MDT | Special Weather Statement | BYZ | Fallon | 65 min |
| May 8, 8:12 PM MDT | Special Weather Statement | GGW | Roosevelt | 48 min |
| May 8, 9:58 PM MDT | Special Weather Statement | BYZ | Carter | 32 min |
| May 9, 11:16 AM MDT | River Flood Watch | TFX | 32 hr | |
| May 9, 11:16 AM MDT | River Flood Watch | TFX | 54 hr | |
| May 9, 11:16 AM MDT | River Flood Watch | TFX | 53 hr | |
| May 9, 11:16 AM MDT | River Flood Watch | TFX | 3 days | |
| May 9, 1:20 PM MDT | River Flood Watch | BYZ | Park | 4 days |
| May 9, 4:05 PM MDT | Special Weather Statement | TFX | Cascade | 55 min |
| May 9, 5:33 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 27 min |
| May 9, 5:54 PM MDT | Special Weather Statement | TFX | Judith Basin | 36 min |
| May 9, 6:01 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 29 min |
| May 9, 6:47 PM MDT | Special Weather Statement | BYZ | Carbon | 43 min |
| May 9, 8:51 PM MDT | Areal Flood Advisory | MSO | Granite | 13 hr |
| May 9, 9:18 PM MDT | Areal Flood Warning | MSO | Granite, Missoula | 59 hr |
| May 10, 3:12 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Valley | 17 hr |
| May 10, 4:37 AM MDT | Dense Fog Advisory | MSO | Flathead, Lake, Mineral, Missoula, Ravalli, Sanders | 5 hr |
| May 10, 7:36 AM MDT | Areal Flood Warning | MSO | Mineral, Sanders | 55 hr |
| May 10, 7:42 AM MDT | Areal Flood Warning | MSO | Sanders | 3 days |
| May 10, 9:45 AM MDT | Areal Flood Warning | MSO | Granite, Missoula, Powell | 47 hr |
| May 10, 9:46 AM MDT | River Flood Warning | BYZ | Wheatland | 25 days |
| May 10, 9:58 AM MDT | Areal Flood Warning | TFX | Broadwater | 48 hr |
| May 10, 11:18 AM MDT | Areal Flood Advisory | MSO | Granite, Lake, Mineral, Missoula, Powell, Ravalli and 1 more | 46 hr |
| May 10, 12:21 PM MDT | River Flood Warning | BYZ | Park | 70 hr |
| May 10, 1:18 PM MDT | River Flood Watch | BYZ | Wheatland | 4 days |
| May 10, 1:18 PM MDT | River Flood Watch | BYZ | Golden Valley | 4 days |
| May 10, 1:35 PM MDT | Winter Weather Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 18 hr |
| May 10, 2:19 PM MDT | Winter Storm Watch | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 13 hr |
| May 10, 2:48 PM MDT | Winter Weather Advisory | TFX | 17 hr | |
| May 10, 3:41 PM MDT | Special Weather Statement | TFX | Liberty | 49 min |
| May 10, 4:35 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 40 min |
| May 10, 5:12 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 48 min |
| May 10, 6:00 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 15 min |
| May 10, 6:21 PM MDT | Flood Watch | TFX | 42 hr | |
| May 10, 6:41 PM MDT | Areal Flood Advisory | TFX | Jefferson | 4 days |
| May 10, 7:21 PM MDT | River Flood Warning | TFX | Beaverhead, Madison | 51 hr |
| May 10, 8:03 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 42 min |
| May 10, 8:47 PM MDT | Special Weather Statement | TFX | Judith Basin | 43 min |
| May 10, 9:27 PM MDT | Special Weather Statement | BYZ | Stillwater | 48 min |
| May 10, 9:39 PM MDT | Special Weather Statement | TFX | Judith Basin | 66 min |
| May 10, 10:42 PM MDT | Special Weather Statement | BYZ | Yellowstone | 48 min |
| May 10, 11:21 PM MDT | Areal Flood Warning | TFX | Lewis and Clark | 7 days |
| May 11, 2:56 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 36 hr |
| May 11, 10:54 AM MDT | River Flood Watch | TFX | 14 hr | |
| May 11, 11:15 AM MDT | Areal Flood Advisory | BYZ | Park | 36 hr |
| May 11, 12:59 PM MDT | River Flood Warning | BYZ | Wheatland | 70 hr |
| May 11, 12:59 PM MDT | River Flood Warning | BYZ | Golden Valley | 5 days |
| May 11, 1:24 PM MDT | Areal Flood Warning | TFX | Cascade | 47 hr |
| May 11, 1:35 PM MDT | Areal Flood Advisory | MSO | Ravalli | 20 hr |
| May 11, 2:50 PM MDT | Winter Weather Advisory | TFX | 18 hr | |
| May 11, 2:58 PM MDT | River Flood Warning | TFX | Cascade | 29 hr |
| May 11, 5:15 PM MDT | River Flood Warning | TFX | Broadwater, Gallatin | 51 hr |
| May 12, 10:52 AM MDT | Areal Flood Advisory | TFX | Broadwater | 48 hr |
| May 12, 12:57 PM MDT | Areal Flood Advisory | TFX | Gallatin, Meagher | 48 hr |
| May 13, 11:23 AM MDT | Areal Flood Advisory | MSO | Missoula | 27 hr |
| May 14, 1:21 PM MDT | Flood Watch | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 71 hr |
| May 14, 2:30 PM MDT | Areal Flood Advisory | MSO | Missoula | 66 hr |
| May 14, 3:32 PM MDT | Special Weather Statement | BYZ | Carter | 43 min |
| May 14, 4:20 PM MDT | Special Weather Statement | BYZ | Carter, Fallon | 40 min |
| May 15, 10:17 AM MDT | River Flood Watch | TFX | 26 hr | |
| May 15, 10:17 AM MDT | River Flood Watch | TFX | 7 days | |
| May 15, 10:17 AM MDT | River Flood Watch | TFX | 7 days | |
| May 15, 10:17 AM MDT | River Flood Watch | TFX | 28 hr | |
| May 15, 1:43 PM MDT | Areal Flood Warning | MSO | Lincoln | 51 hr |
| May 15, 2:58 PM MDT | Flood Watch | MSO | Flathead, Lincoln, Sanders | 45 hr |
| May 16, 9:46 AM MDT | Flood Watch | TFX | 3 days | |
| May 16, 11:31 AM MDT | Areal Flood Warning | TFX | Cascade, Teton | 46 hr |
| May 16, 12:14 PM MDT | Special Weather Statement | TFX | Fergus | 31 min |
| May 16, 12:38 PM MDT | Areal Flood Warning | MSO | Sanders | 5 days |
| May 16, 12:42 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 48 min |
| May 16, 12:43 PM MDT | Areal Flood Warning | MSO | Mineral, Missoula | 48 hr |
| May 16, 12:44 PM MDT | Special Weather Statement | TFX | Fergus | 31 min |
| May 16, 12:48 PM MDT | Areal Flood Warning | MSO | Missoula, Ravalli | 4 days |
| May 16, 1:46 PM MDT | Special Weather Statement | MSO | Missoula | 29 min |
| May 16, 1:50 PM MDT | Special Weather Statement | MSO | Lake | 25 min |
| May 16, 2:16 PM MDT | Special Weather Statement | MSO | Ravalli | 44 min |
| May 16, 2:39 PM MDT | Special Weather Statement | TFX | Fergus | 36 min |
| May 16, 2:48 PM MDT | Special Weather Statement | TFX | Hill | 27 min |
| May 16, 3:13 PM MDT | Special Weather Statement | TFX | Blaine | 32 min |
| May 16, 3:29 PM MDT | Special Weather Statement | MSO | Mineral | 46 min |
| May 16, 3:31 PM MDT | Special Weather Statement | MSO | Lincoln | 29 min |
| May 16, 3:35 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 25 min |
| May 16, 3:55 PM MDT | Special Weather Statement | MSO | Mineral | 35 min |
| May 16, 3:59 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 24 min |
| May 16, 4:19 PM MDT | Special Weather Statement | MSO | Missoula | 41 min |
| May 16, 4:20 PM MDT | Special Weather Statement | BYZ | Carter | 40 min |
| May 16, 5:15 PM MDT | Special Weather Statement | TFX | Pondera | 30 min |
| May 16, 5:26 PM MDT | Special Weather Statement | BYZ | Golden Valley | 34 min |
| May 16, 5:26 PM MDT | Special Weather Statement | MSO | Sanders | 49 min |
| May 16, 5:33 PM MDT | Areal Flood Advisory | MSO | Sanders | 87 min |
| May 16, 5:49 PM MDT | Special Weather Statement | TFX | Fergus | 26 min |
| May 16, 5:50 PM MDT | Special Weather Statement | BYZ | Carter | 40 min |
| May 16, 5:57 PM MDT | Special Weather Statement | TFX | Teton | 33 min |
| May 16, 6:12 PM MDT | Special Weather Statement | TFX | 48 min | |
| May 16, 6:27 PM MDT | Special Weather Statement | BYZ | Carter | 48 min |
| May 16, 7:06 PM MDT | Special Weather Statement | TFX | 24 min | |
| May 16, 7:10 PM MDT | Special Weather Statement | BYZ | Fallon | 65 min |
| May 16, 7:14 PM MDT | Special Weather Statement | MSO | Lincoln | 46 min |
| May 16, 7:41 PM MDT | Special Weather Statement | MSO | Lincoln | 64 min |
| May 16, 7:48 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 57 min |
| May 16, 8:05 PM MDT | Special Weather Statement | BYZ | Big Horn | 40 min |
| May 16, 8:42 PM MDT | Special Weather Statement | BYZ | Big Horn | 48 min |
| May 16, 9:32 PM MDT | Special Weather Statement | GGW | Richland | 43 min |
| May 16, 10:21 PM MDT | Special Weather Statement | GGW | Valley | 39 min |
| May 16, 10:40 PM MDT | Special Weather Statement | BYZ | 50 min | |
| May 16, 10:59 PM MDT | Special Weather Statement | BYZ | Rosebud | 46 min |
| May 17, 3:41 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 30 hr |
| May 17, 11:32 AM MDT | Areal Flood Advisory | TFX | Lewis and Clark | 48 hr |
| May 17, 12:44 PM MDT | Areal Flood Warning | TFX | Lewis and Clark | 4 days |
| May 17, 12:58 PM MDT | Mesoscale Discussion | SPC | Carter | 92 min |
| May 17, 1:23 PM MDT | Severe Thunderstorm Watch | SPC | Carter | 10 hr |
| May 17, 1:37 PM MDT | Special Weather Statement | MSO | Silver Bow | 23 min |
| May 17, 2:11 PM MDT | Special Weather Statement | BYZ | Fallon | 34 min |
| May 17, 2:14 PM MDT | Special Weather Statement | TFX | Blaine | 46 min |
| May 17, 2:16 PM MDT | Special Weather Statement | TFX | Fergus | 29 min |
| May 17, 2:18 PM MDT | Special Weather Statement | TFX | Blaine | 27 min |
| May 17, 2:36 PM MDT | Special Weather Statement | TFX | Fergus | 39 min |
| May 17, 2:39 PM MDT | Flash Flood Warning | TFX | Blaine | 4 hr |
| May 17, 3:00 PM MDT | Special Weather Statement | TFX | Musselshell | 30 min |
| May 17, 3:04 PM MDT | Flash Flood Warning | GGW | Phillips | 3 hr |
| May 17, 3:13 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 29 min |
| May 17, 3:15 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 30 min |
| May 17, 3:32 PM MDT | Special Weather Statement | BYZ | Fallon | 43 min |
| May 17, 3:34 PM MDT | Special Weather Statement | BYZ | Stillwater | 26 min |
| May 17, 4:01 PM MDT | Special Weather Statement | BYZ | Musselshell | 29 min |
| May 17, 4:05 PM MDT | Special Weather Statement | BYZ | Yellowstone | 40 min |
| May 17, 4:25 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 50 min |
| May 17, 4:44 PM MDT | Areal Flood Advisory | GGW | Valley | 3 hr |
| May 17, 4:54 PM MDT | Mesoscale Discussion | SPC | Carter | 66 min |
| May 17, 5:10 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 50 min |
| May 17, 5:12 PM MDT | Areal Flood Advisory | BYZ | Musselshell, Yellowstone | 3 hr |
| May 17, 5:18 PM MDT | Special Weather Statement | BYZ | Powder River | 27 min |
| May 17, 5:18 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 19 min |
| May 17, 5:32 PM MDT | Special Weather Statement | BYZ | Treasure | 43 min |
| May 17, 5:36 PM MDT | Special Weather Statement | BYZ | Powder River | 24 min |
| May 17, 5:49 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 41 min |
| May 17, 5:51 PM MDT | Special Weather Statement | BYZ | Musselshell | 39 min |
| May 17, 5:51 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 24 min |
| May 17, 6:08 PM MDT | Special Weather Statement | BYZ | Powder River | 37 min |
| May 17, 6:15 PM MDT | Special Weather Statement | BYZ | Rosebud, Treasure | 45 min |
| May 17, 6:25 PM MDT | Areal Flood Advisory | GGW | Valley | 3 hr |
| May 17, 6:31 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 29 min |
| May 17, 6:49 PM MDT | Special Weather Statement | BYZ | Powder River | 26 min |
| May 17, 7:03 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 38 min |
| May 17, 7:30 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 60 min |
| May 17, 8:29 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 61 min |
| May 17, 8:39 PM MDT | Special Weather Statement | BYZ | Powder River | 51 min |
| May 17, 8:43 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 43 min |
| May 18, 10:15 AM MDT | Areal Flood Advisory | MSO | Missoula | 3 days |
| May 19, 11:33 AM MDT | Flood Watch | TFX | 16 hr | |
| May 19, 1:45 PM MDT | River Flood Warning | BYZ | Wheatland | 44 hr |
| May 19, 1:45 PM MDT | River Flood Warning | BYZ | Golden Valley | 15 days |
| May 20, 3:19 AM MDT | Areal Flood Warning | TFX | Beaverhead, Madison | 16 days |
| May 20, 3:25 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Valley | 17 hr |
| May 20, 11:51 AM MDT | Flood Watch | TFX | 38 hr | |
| May 20, 12:08 PM MDT | Areal Flood Warning | MSO | Missoula | 15 days |
| May 20, 2:47 PM MDT | Special Weather Statement | MSO | Granite | 43 min |
| May 21, 11:59 AM MDT | Flood Watch | MSO | Flathead, Lincoln, Missoula, Ravalli, Sanders | 45 hr |
| May 21, 12:37 PM MDT | Flash Flood Warning | TFX | Blaine, Chouteau, Hill | 5 hr |
| May 21, 3:17 PM MDT | Special Weather Statement | RIW | Carbon | 28 min |
| May 21, 3:19 PM MDT | Special Weather Statement | TFX | Hill | 11 min |
| May 21, 3:28 PM MDT | Special Weather Statement | TFX | Gallatin | 32 min |
| May 21, 4:34 PM MDT | Special Weather Statement | TFX | Meagher | 26 min |
| May 21, 4:57 PM MDT | Special Weather Statement | BYZ | Stillwater | 33 min |
| May 21, 5:28 PM MDT | Special Weather Statement | BYZ | Stillwater | 47 min |
| May 21, 5:30 PM MDT | Special Weather Statement | BYZ | Golden Valley | 45 min |
| May 21, 5:56 PM MDT | Special Weather Statement | GGW | Garfield | 64 min |
| May 21, 6:07 PM MDT | Special Weather Statement | TFX | Gallatin | 23 min |
| May 21, 6:49 PM MDT | Special Weather Statement | BYZ | Musselshell | 41 min |
| May 21, 6:57 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 33 min |
| May 21, 8:11 PM MDT | Special Weather Statement | BYZ | Musselshell | 49 min |
| May 21, 9:27 PM MDT | Special Weather Statement | BYZ | Treasure | 63 min |
| May 22, 2:11 AM MDT | Areal Flood Warning | TFX | Broadwater, Gallatin, Jefferson, Madison | 15 days |
| May 22, 11:27 AM MDT | River Flood Warning | BYZ | Carbon | 14 days |
| May 22, 11:27 AM MDT | River Flood Warning | BYZ | Carbon | 14 days |
| May 22, 11:56 AM MDT | Special Weather Statement | TFX | Meagher | 34 min |
| May 22, 12:40 PM MDT | Flood Watch | BYZ | Big Horn, Carbon, Golden Valley, Musselshell, Park, Stillwater and 3 more | 35 hr |
| May 22, 1:57 PM MDT | Areal Flood Warning | MSO | Missoula, Ravalli | 11 days |
| May 22, 3:30 PM MDT | Special Weather Statement | MSO | Ravalli | 30 min |
| May 22, 3:31 PM MDT | Special Weather Statement | GGW | Valley | 44 min |
| May 22, 3:51 PM MDT | Special Weather Statement | MSO | Ravalli | 24 min |
| May 22, 4:14 PM MDT | Special Weather Statement | GGW | Valley | 46 min |
| May 22, 4:26 PM MDT | Special Weather Statement | GGW | 49 min | |
| May 22, 4:37 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 38 min |
| May 22, 4:56 PM MDT | Special Weather Statement | GGW | Valley | 49 min |
| May 22, 4:56 PM MDT | Mesoscale Discussion | SPC | Carter, Fallon, Powder River | 2 hr |
| May 22, 5:05 PM MDT | Special Weather Statement | GGW | 40 min | |
| May 22, 5:33 PM MDT | Special Weather Statement | BYZ | Carter | 42 min |
| May 22, 5:52 PM MDT | Special Weather Statement | GGW | 38 min | |
| May 22, 6:07 PM MDT | Special Weather Statement | BYZ | Yellowstone | 38 min |
| May 22, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 38 min |
| May 22, 6:18 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 43 min |
| May 22, 6:28 PM MDT | Special Weather Statement | GGW | Petroleum | 47 min |
| May 22, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 41 min |
| May 22, 8:43 PM MDT | Areal Flood Advisory | BYZ | Yellowstone | 3 hr |
| May 22, 8:51 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 54 min |
| May 22, 9:13 PM MDT | Areal Flood Advisory | BYZ | Carbon, Stillwater | 3 hr |
| May 22, 10:31 PM MDT | Flash Flood Warning | BYZ | Carbon | 6 hr |
| May 23, 3:13 AM MDT | Flood Watch | TFX | 35 hr | |
| May 23, 5:00 AM MDT | Areal Flood Advisory | BYZ | Carbon, Stillwater, Yellowstone | 7 hr |
| May 23, 7:55 AM MDT | Areal Flood Warning | BYZ | Carbon, Stillwater, Sweet Grass | 6 hr |
| May 23, 7:58 AM MDT | Special Weather Statement | GGW | Richland | 47 min |
| May 23, 9:26 AM MDT | Areal Flood Warning | MSO | Sanders | 8 days |
| May 23, 9:34 AM MDT | Flood Watch | MSO | Flathead, Lake, Missoula, Ravalli, Sanders | 4 days |
| May 23, 9:44 AM MDT | Special Weather Statement | GGW | Roosevelt | 46 min |
| May 23, 9:45 AM MDT | Areal Flood Warning | MSO | Mineral, Missoula | 5 days |
| May 23, 10:25 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt, Sheridan | 50 min |
| May 23, 11:09 AM MDT | River Flood Warning | BYZ | Park | 5 days |
| May 23, 11:45 AM MDT | River Flood Warning | BYZ | Sweet Grass | 5 days |
| May 23, 12:12 PM MDT | Special Weather Statement | GGW | Sheridan | 48 min |
| May 23, 12:14 PM MDT | River Flood Watch | BYZ | Stillwater, Yellowstone | 3 days |
| May 23, 12:44 PM MDT | Areal Flood Warning | BYZ | Carbon, Stillwater, Sweet Grass | 6 hr |
| May 23, 1:25 PM MDT | Special Weather Statement | BYZ | Yellowstone | 50 min |
| May 23, 2:34 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carter, Custer, Fallon, Powder River, Rosebud and 1 more | 116 min |
| May 23, 2:52 PM MDT | Special Weather Statement | BYZ | Rosebud | 38 min |
| May 23, 3:31 PM MDT | Special Weather Statement | BYZ | Yellowstone | 44 min |
| May 23, 3:35 PM MDT | Special Weather Statement | BYZ | Rosebud | 40 min |
| May 23, 3:45 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| May 23, 3:49 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 56 min |
| May 23, 3:58 PM MDT | Special Weather Statement | BYZ | Yellowstone | 47 min |
| May 23, 4:02 PM MDT | Special Weather Statement | GGW | McCone | 43 min |
| May 23, 4:03 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 57 min |
| May 23, 4:11 PM MDT | Special Weather Statement | GGW | Garfield | 49 min |
| May 23, 4:12 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 48 min |
| May 23, 4:29 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 61 min |
| May 23, 4:29 PM MDT | Special Weather Statement | MSO | Ravalli | 31 min |
| May 23, 4:42 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 63 min |
| May 23, 4:48 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 57 min |
| May 23, 4:52 PM MDT | Special Weather Statement | BYZ | Custer | 38 min |
| May 23, 4:57 PM MDT | Special Weather Statement | GGW | Garfield | 48 min |
| May 23, 5:06 PM MDT | Special Weather Statement | BYZ | Powder River | 39 min |
| May 23, 5:07 PM MDT | Mesoscale Discussion | SPC | Carter | 83 min |
| May 23, 5:18 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 57 min |
| May 23, 5:31 PM MDT | Special Weather Statement | BYZ | Treasure | 44 min |
| May 23, 5:41 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 64 min |
| May 23, 5:45 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 60 min |
| May 23, 5:54 PM MDT | Special Weather Statement | BYZ | Carter | 51 min |
| May 23, 6:12 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure, Yellowstone | 63 min |
| May 23, 6:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 61 min |
| May 23, 6:18 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 57 min |
| May 23, 6:18 PM MDT | Areal Flood Advisory | TFX | Meagher | 5 days |
| May 23, 6:21 PM MDT | Special Weather Statement | MSO | 24 min | |
| May 23, 6:37 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 53 min |
| May 23, 6:38 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 37 min |
| May 23, 6:42 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 33 min |
| May 23, 6:44 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 min |
| May 23, 6:55 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie | 50 min |
| May 23, 6:58 PM MDT | Special Weather Statement | BYZ | Fallon | 62 min |
| May 23, 7:00 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 37 min |
| May 23, 7:16 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 59 min |
| May 23, 7:18 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 57 min |
| May 23, 8:02 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 43 min |
| May 23, 8:17 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 29 min |
| May 24, 10:13 AM MDT | Areal Flood Warning | TFX | Broadwater | 6 days |
| May 24, 10:28 AM MDT | River Flood Warning | BYZ | Wheatland | 49 hr |
| May 24, 10:31 AM MDT | Areal Flood Warning | TFX | Gallatin | 9 days |
| May 24, 11:57 AM MDT | River Flood Warning | BYZ | Park, Sweet Grass | 15 days |
| May 24, 1:37 PM MDT | River Flood Watch | BYZ | Rosebud, Treasure | 5 days |
| May 24, 1:37 PM MDT | River Flood Watch | BYZ | Custer | 46 hr |
| May 24, 2:13 PM MDT | River Flood Watch | BYZ | Stillwater | 46 hr |
| May 24, 2:19 PM MDT | Flood Watch | TFX | 29 hr | |
| May 25, 9:31 AM MDT | Areal Flood Warning | MSO | Ravalli | 49 hr |
| May 25, 3:50 PM MDT | Special Weather Statement | MSO | 40 min | |
| May 25, 4:19 PM MDT | Special Weather Statement | MSO | 41 min | |
| May 25, 4:23 PM MDT | Special Weather Statement | MSO | 37 min | |
| May 25, 5:49 PM MDT | Special Weather Statement | TFX | Jefferson | 26 min |
| May 25, 6:16 PM MDT | Special Weather Statement | MSO | Powell | 44 min |
| May 25, 7:24 PM MDT | Areal Flood Warning | TFX | Cascade | 62 hr |
| May 25, 8:22 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 38 min |
| May 25, 10:08 PM MDT | Special Weather Statement | TFX | Cascade | 37 min |
| May 26, 1:38 AM MDT | Areal Flood Advisory | TFX | Lewis and Clark | 12 hr |
| May 26, 10:50 AM MDT | Special Weather Statement | GGW | 55 min | |
| May 26, 11:28 AM MDT | River Flood Warning | BYZ | Stillwater, Yellowstone | 3 days |
| May 26, 11:28 AM MDT | River Flood Warning | BYZ | Custer | 9 days |
| May 26, 11:35 AM MDT | Special Weather Statement | GGW | 55 min | |
| May 26, 11:59 AM MDT | River Flood Warning | BYZ | Stillwater | 51 hr |
| May 26, 12:09 PM MDT | Special Weather Statement | GGW | 51 min | |
| May 26, 1:24 PM MDT | Areal Flood Warning | TFX | Lewis and Clark | 20 hr |
| May 26, 1:38 PM MDT | Flash Flood Watch | TFX | 9 hr | |
| May 26, 2:12 PM MDT | Special Weather Statement | TFX | Jefferson | 48 min |
| May 26, 2:21 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Big Horn, Broadwater, Carbon, Cascade, Custer and 33 more | 114 min |
| May 26, 2:58 PM MDT | Special Weather Statement | TFX | Judith Basin | 47 min |
| May 26, 3:17 PM MDT | Special Weather Statement | TFX | Broadwater | 43 min |
| May 26, 3:22 PM MDT | Special Weather Statement | MSO | Deer Lodge | 23 min |
| May 26, 3:44 PM MDT | Special Weather Statement | MSO | 31 min | |
| May 26, 3:44 PM MDT | Special Weather Statement | TFX | Beaverhead | 46 min |
| May 26, 4:09 PM MDT | Special Weather Statement | TFX | Judith Basin | 51 min |
| May 26, 4:27 PM MDT | Special Weather Statement | TFX | 48 min | |
| May 26, 4:34 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead | 20 min |
| May 26, 4:43 PM MDT | Special Weather Statement | TFX | Judith Basin | 47 min |
| May 26, 4:46 PM MDT | Mesoscale Discussion | SPC | Custer, Dawson, Fallon, Garfield, McCone, Prairie and 4 more | 119 min |
| May 26, 4:56 PM MDT | Special Weather Statement | TFX | Deer Lodge | 49 min |
| May 26, 5:15 PM MDT | Special Weather Statement | TFX | Jefferson | 45 min |
| May 26, 5:21 PM MDT | Special Weather Statement | TFX | Jefferson | 39 min |
| May 26, 5:25 PM MDT | Special Weather Statement | TFX | Deer Lodge | 20 min |
| May 26, 5:36 PM MDT | Severe Thunderstorm Watch | SPC | Dawson, Fallon, Garfield, McCone, Prairie, Richland and 3 more | 9 hr |
| May 26, 5:48 PM MDT | Special Weather Statement | TFX | Jefferson | 42 min |
| May 26, 5:54 PM MDT | Severe Thunderstorm Warning | TFX | Jefferson | 36 min |
| May 26, 5:55 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| May 26, 6:09 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 51 min |
| May 26, 6:14 PM MDT | Special Weather Statement | TFX | Jefferson | 31 min |
| May 26, 6:17 PM MDT | Severe Thunderstorm Warning | TFX | Jefferson, Madison | 28 min |
| May 26, 6:32 PM MDT | Special Weather Statement | BYZ | Yellowstone | 28 min |
| May 26, 6:34 PM MDT | Special Weather Statement | GGW | 41 min | |
| May 26, 6:35 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Jefferson | 25 min |
| May 26, 6:36 PM MDT | Special Weather Statement | GGW | McCone | 39 min |
| May 26, 6:46 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 42 min |
| May 26, 6:46 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 59 min |
| May 26, 6:46 PM MDT | Special Weather Statement | TFX | Wheatland | 44 min |
| May 26, 6:52 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 53 min |
| May 26, 7:00 PM MDT | Special Weather Statement | BYZ | Golden Valley | 30 min |
| May 26, 7:07 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 15 min |
| May 26, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Sweet Grass, Wheatland | 61 min |
| May 26, 7:42 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 63 min |
| May 26, 7:45 PM MDT | Special Weather Statement | GGW | McCone | 60 min |
| May 26, 7:54 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Wheatland | 3 hr |
| May 26, 8:00 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater, Wheatland | 60 min |
| May 26, 8:16 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 44 min |
| May 26, 8:18 PM MDT | Special Weather Statement | GGW | McCone | 42 min |
| May 26, 8:38 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland | 67 min |
| May 26, 8:53 PM MDT | Special Weather Statement | GGW | McCone | 67 min |
| May 26, 8:57 PM MDT | Special Weather Statement | BYZ | Stillwater | 63 min |
| May 26, 9:13 PM MDT | Mesoscale Discussion | SPC | Custer, Dawson, Fallon, Garfield, McCone, Prairie and 4 more | 2 hr |
| May 26, 9:14 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 61 min |
| May 26, 9:18 PM MDT | Special Weather Statement | BYZ | Garfield | 27 min |
| May 26, 9:20 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Stillwater, Wheatland | 115 min |
| May 26, 9:23 PM MDT | Special Weather Statement | GGW | Garfield | 52 min |
| May 26, 9:29 PM MDT | Special Weather Statement | GGW | Sheridan | 46 min |
| May 26, 9:33 PM MDT | Special Weather Statement | GGW | Valley | 57 min |
| May 26, 9:44 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 61 min |
| May 26, 9:49 PM MDT | Flash Flood Warning | GGW | Garfield, McCone | 4 hr |
| May 26, 10:05 PM MDT | Special Weather Statement | BYZ | Stillwater | 25 min |
| May 26, 10:15 PM MDT | Special Weather Statement | GGW | McCone | 45 min |
| May 26, 10:21 PM MDT | Flash Flood Warning | GGW | Dawson, McCone, Richland | 4 hr |
| May 26, 10:34 PM MDT | Special Weather Statement | GGW | Richland | 56 min |
| May 26, 10:44 PM MDT | Special Weather Statement | GGW | Dawson | 61 min |
| May 26, 11:02 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland, Wibaux | 58 min |
| May 26, 11:44 PM MDT | Special Weather Statement | BYZ | Big Horn | 31 min |
| May 26, 11:54 PM MDT | Special Weather Statement | GGW | Wibaux | 66 min |
| May 27, 12:24 AM MDT | Special Weather Statement | BYZ | 36 min | |
| May 27, 12:29 AM MDT | Mesoscale Discussion | SPC | Fallon, Wibaux | 3 hr |
| May 27, 12:39 AM MDT | Special Weather Statement | BYZ | Custer | 36 min |
| May 27, 12:43 AM MDT | Areal Flood Advisory | GGW | Dawson, Prairie | 3 hr |
| May 27, 12:52 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 23 min |
| May 27, 1:06 AM MDT | Special Weather Statement | GGW | Wibaux | 54 min |
| May 27, 1:15 AM MDT | Special Weather Statement | BYZ | Powder River | 30 min |
| May 27, 1:25 AM MDT | Special Weather Statement | BYZ | Fallon | 35 min |
| May 27, 2:26 AM MDT | Special Weather Statement | BYZ | Fallon | 34 min |
| May 27, 3:05 AM MDT | Special Weather Statement | BYZ | Fallon | 25 min |
| May 27, 4:25 AM MDT | Flood Watch | BYZ | Big Horn, Carbon, Carter, Powder River | 40 hr |
| May 27, 12:27 PM MDT | River Flood Warning | BYZ | Rosebud | 5 days |
| May 27, 2:07 PM MDT | Special Weather Statement | TFX | Judith Basin, Meagher | 3 hr |
| May 27, 5:46 PM MDT | Special Weather Statement | BYZ | Stillwater | 44 min |
| May 27, 7:31 PM MDT | Special Weather Statement | BYZ | Carbon | 44 min |
| May 27, 11:27 PM MDT | Special Weather Statement | BYZ | Big Horn | 78 min |
| May 28, 9:24 AM MDT | Flood Watch | TFX | 36 hr | |
| May 28, 12:19 PM MDT | Special Weather Statement | BYZ | Yellowstone | 26 min |
| May 28, 12:35 PM MDT | Areal Flood Advisory | BYZ | Yellowstone | 3 hr |
| May 28, 1:45 PM MDT | Special Weather Statement | BYZ | Carbon | 45 min |
| May 28, 2:53 PM MDT | Special Weather Statement | TFX | Meagher | 22 min |
| May 28, 3:30 PM MDT | Areal Flood Advisory | BYZ | Big Horn, Carbon, Stillwater, Yellowstone | 4 hr |
| May 28, 4:54 PM MDT | Special Weather Statement | TFX | Gallatin | 36 min |
| May 28, 5:43 PM MDT | Areal Flood Advisory | BYZ | Big Horn | 6 hr |
| May 29, 1:58 AM MDT | Special Weather Statement | BYZ | Fallon | 62 min |
| May 29, 3:13 AM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 17 hr |
| May 29, 3:06 PM MDT | Special Weather Statement | BYZ | Custer | 39 min |
| May 29, 3:48 PM MDT | Special Weather Statement | BYZ | Rosebud | 27 min |
| May 29, 4:01 PM MDT | Special Weather Statement | GGW | Valley | 44 min |
| May 29, 4:52 PM MDT | Special Weather Statement | BYZ | Custer | 38 min |
| May 29, 8:50 PM MDT | Areal Flood Warning | TFX | Blaine, Fergus | 14 hr |
| May 30, 4:43 AM MDT | Special Weather Statement | TFX | Pondera | 47 min |
| May 30, 10:23 AM MDT | Areal Flood Warning | TFX | Blaine, Fergus | 4 days |
| May 30, 10:35 AM MDT | Flood Watch | MSO | Deer Lodge, Granite, Powell, Silver Bow | 47 hr |
| May 30, 1:11 PM MDT | Areal Flood Warning | TFX | Broadwater | 5 days |
| May 30, 1:27 PM MDT | Flash Flood Watch | GGW | Phillips | 38 hr |
| May 30, 1:34 PM MDT | Special Weather Statement | GGW | Valley | 41 min |
| May 30, 1:48 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Broadwater, Deer Lodge, Gallatin, Jefferson, Madison and 5 more | 117 min |
| May 30, 1:57 PM MDT | Special Weather Statement | TFX | Beaverhead | 33 min |
| May 30, 2:19 PM MDT | Special Weather Statement | GGW | Valley | 56 min |
| May 30, 2:34 PM MDT | Special Weather Statement | TFX | Jefferson | 26 min |
| May 30, 2:39 PM MDT | Special Weather Statement | GGW | Valley | 66 min |
| May 30, 2:57 PM MDT | Special Weather Statement | BYZ | Golden Valley | 48 min |
| May 30, 2:59 PM MDT | Special Weather Statement | TFX | Broadwater | 31 min |
| May 30, 3:03 PM MDT | Special Weather Statement | TFX | Jefferson | 27 min |
| May 30, 3:20 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 40 min |
| May 30, 3:33 PM MDT | Special Weather Statement | TFX | Broadwater | 27 min |
| May 30, 3:37 PM MDT | Special Weather Statement | GGW | Petroleum | 68 min |
| May 30, 3:39 PM MDT | Special Weather Statement | TFX | Broadwater, Jefferson | 36 min |
| May 30, 3:44 PM MDT | Special Weather Statement | BYZ | Wheatland | 46 min |
| May 30, 3:48 PM MDT | Special Weather Statement | GGW | Valley | 57 min |
| May 30, 4:22 PM MDT | Special Weather Statement | TFX | Broadwater, Meagher | 23 min |
| May 30, 4:46 PM MDT | Special Weather Statement | TFX | Fergus | 44 min |
| May 30, 4:49 PM MDT | Special Weather Statement | BYZ | Wheatland | 41 min |
| May 30, 4:50 PM MDT | Special Weather Statement | TFX | Wheatland | 40 min |
| May 30, 5:03 PM MDT | Special Weather Statement | TFX | Fergus | 42 min |
| May 30, 5:17 PM MDT | Special Weather Statement | MSO | Deer Lodge | 28 min |
| May 30, 5:29 PM MDT | Special Weather Statement | BYZ | Wheatland | 46 min |
| May 30, 5:45 PM MDT | Special Weather Statement | TFX | Cascade | 30 min |
| May 30, 5:48 PM MDT | Special Weather Statement | TFX | Fergus | 42 min |
| May 30, 5:55 PM MDT | Special Weather Statement | TFX | Madison | 35 min |
| May 30, 6:14 PM MDT | Areal Flood Advisory | TFX | Fergus | 2 hr |
| May 30, 6:25 PM MDT | Special Weather Statement | TFX | Cascade | 35 min |
| May 30, 7:25 PM MDT | Areal Flood Advisory | GGW | Phillips | 3 hr |
| May 30, 7:39 PM MDT | Special Weather Statement | GGW | Petroleum | 66 min |
| May 30, 7:52 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 53 min |
| May 30, 8:08 PM MDT | Special Weather Statement | BYZ | Treasure | 52 min |
| May 30, 9:15 PM MDT | Special Weather Statement | GGW | Valley | 60 min |
| May 30, 10:06 PM MDT | Special Weather Statement | GGW | Garfield | 54 min |
| May 30, 10:08 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 52 min |
| May 30, 10:35 PM MDT | Special Weather Statement | GGW | Richland | 40 min |
| May 30, 10:38 PM MDT | Special Weather Statement | MSO | Ravalli | 22 min |
| May 30, 10:44 PM MDT | Special Weather Statement | TFX | Ravalli | 31 min |
| May 30, 11:00 PM MDT | Special Weather Statement | GGW | Roosevelt | 60 min |
| May 30, 11:07 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 38 min |
| May 30, 11:14 PM MDT | Special Weather Statement | TFX | Deer Lodge | 31 min |
| May 31, 12:53 AM MDT | Special Weather Statement | GGW | Richland | 52 min |
| May 31, 4:13 AM MDT | Flood Watch | TFX | 28 hr | |
| May 31, 11:12 AM MDT | Special Weather Statement | MSO | Ravalli | 33 min |
| May 31, 11:48 AM MDT | Areal Flood Advisory | BYZ | Big Horn | 23 hr |
| May 31, 12:33 PM MDT | Mesoscale Discussion | SPC | Beaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson and 5 more | 117 min |
| May 31, 12:34 PM MDT | Special Weather Statement | MSO | Ravalli | 41 min |
| May 31, 12:52 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 38 min |
| May 31, 1:20 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 40 min |
| May 31, 1:24 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 36 min |
| May 31, 1:47 PM MDT | Mesoscale Discussion | SPC | Carter, Dawson, Fallon, Wibaux | 118 min |
| May 31, 1:50 PM MDT | Severe Thunderstorm Watch | SPC | Beaverhead, Big Horn, Broadwater, Carbon, Carter, Cascade and 25 more | 8 hr |
| May 31, 1:58 PM MDT | Special Weather Statement | TFX | Gallatin | 47 min |
| May 31, 2:18 PM MDT | Special Weather Statement | TFX | Fergus | 42 min |
| May 31, 2:19 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 26 min |
| May 31, 2:32 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 43 min |
| May 31, 2:33 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 13 min |
| May 31, 2:38 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 52 min |
| May 31, 2:47 PM MDT | Severe Thunderstorm Warning | MSO | Granite | 43 min |
| May 31, 2:58 PM MDT | Special Weather Statement | BYZ | Golden Valley | 47 min |
| May 31, 3:05 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 25 min |
| May 31, 3:11 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 34 min |
| May 31, 3:26 PM MDT | Areal Flood Advisory | TFX | Fergus, Judith Basin | 3 hr |
| May 31, 3:26 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 34 min |
| May 31, 3:27 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 48 min |
| May 31, 3:40 PM MDT | Special Weather Statement | BYZ | Carter | 35 min |
| May 31, 3:42 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 33 min |
| May 31, 3:44 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 46 min |
| May 31, 3:45 PM MDT | Areal Flood Advisory | TFX | Lewis and Clark | 3 hr |
| May 31, 4:07 PM MDT | Special Weather Statement | BYZ | Park | 38 min |
| May 31, 4:09 PM MDT | Special Weather Statement | BYZ | Carbon | 51 min |
| May 31, 4:11 PM MDT | Special Weather Statement | TFX | Chouteau | 34 min |
| May 31, 4:14 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 46 min |
| May 31, 4:14 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 31 min |
| May 31, 4:16 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 43 min |
| May 31, 4:27 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 48 min |
| May 31, 4:28 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 62 min |
| May 31, 4:39 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 36 min |
| May 31, 4:58 PM MDT | Special Weather Statement | BYZ | Stillwater | 47 min |
| May 31, 5:07 PM MDT | Areal Flood Advisory | BYZ | Yellowstone | 48 min |
| May 31, 5:10 PM MDT | River Flood Warning | BYZ | Big Horn | 18 hr |
| May 31, 5:11 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Sweet Grass | 37 min |
| May 31, 5:20 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 55 min |
| May 31, 5:27 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Custer, Gallatin, Golden Valley, Madison and 10 more | 93 min |
| May 31, 5:39 PM MDT | Special Weather Statement | BYZ | Big Horn | 51 min |
| May 31, 5:57 PM MDT | Special Weather Statement | TFX | 48 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 91 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 281 |
| Flooding | |
| Areal Flood Warning | 38 |
| Flash Flood Warning | 8 |
| River Flood Warning | 20 |
| Flash Flood Watch | 2 |
| Flood Watch | 18 |
| River Flood Watch | 16 |
| Areal Flood Advisory | 32 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Wind and dust | |
| Lake Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McCone County33
- Valley County31
- Stillwater County31
- Missoula County29
- Yellowstone County29
- Garfield County27
- Ravalli County26
- Big Horn County24
- Carbon County23
- Wheatland County23
- Carter County22
- Custer County22
- Sweet Grass County22
- Jefferson County21
- Fallon County21
- Golden Valley County21
- Fergus County19
- Broadwater County18
- Park County18
- Rosebud County18
- Lewis and Clark County17
- Richland County17
- Dawson County17
- Granite County16
- Gallatin County16
- Treasure County16
- Musselshell County16
- Prairie County15
- Powder River County15
- Sanders County14
- Deer Lodge County14
- Beaverhead County12
- Mineral County12
- Meagher County12
- Judith Basin County12
- Cascade County12
- Wibaux County12
- Lincoln County11
- Powell County11
- Madison County11
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.