Alert archive / Montana / 1999
Weather alerts in Montana, August 1999
125 weather alerts in August 1999, 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 August 1999. Tap one for its archive.
- Alerts
- 125
- Warnings
- 120
- Watches
- 5
- Advisories
- 0
- Busiest day
- August 15, 199951 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 |
|---|---|---|---|---|
| Aug 2, 5:30 PM MDT | Flash Flood Warning | BYZ | Big Horn | 90 min |
| Aug 2, 7:05 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 40 min |
| Aug 2, 7:46 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 29 min |
| Aug 2, 7:57 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 63 min |
| Aug 2, 9:01 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 64 min |
| Aug 2, 9:57 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 88 min |
| Aug 3, 3:55 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin, Meagher | 30 min |
| Aug 3, 6:30 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 45 min |
| Aug 4, 7:44 PM MDT | Flash Flood Warning | BYZ | Big Horn | 56 min |
| Aug 6, 4:17 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater | 28 min |
| Aug 7, 3:15 PM MDT | Severe Thunderstorm Watch | SPC | Beaverhead, Broadwater, Carbon, Cascade, Chouteau, Deer Lodge and 24 more | 6 hr |
| Aug 7, 3:36 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Ravalli | 54 min |
| Aug 7, 4:30 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula, Sanders | 60 min |
| Aug 7, 5:20 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 35 min |
| Aug 7, 5:27 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 63 min |
| Aug 7, 5:35 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 60 min |
| Aug 7, 6:10 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 60 min |
| Aug 7, 6:28 PM MDT | Severe Thunderstorm Warning | TFX | Pondera | 42 min |
| Aug 7, 6:52 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln, Sanders | 38 min |
| Aug 7, 6:54 PM MDT | Tornado Warning | TFX | Teton | 31 min |
| Aug 7, 7:16 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 44 min |
| Aug 7, 7:27 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 33 min |
| Aug 7, 7:31 PM MDT | Severe Thunderstorm Warning | TFX | Pondera | 59 min |
| Aug 7, 7:40 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 60 min |
| Aug 7, 8:13 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 57 min |
| Aug 7, 9:00 PM MDT | Severe Thunderstorm Warning | TFX | Liberty, Toole | 60 min |
| Aug 7, 9:15 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill | 45 min |
| Aug 7, 9:43 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 62 min |
| Aug 7, 10:00 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty, Toole | 35 min |
| Aug 7, 10:03 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Musselshell | 2 hr |
| Aug 7, 10:35 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 40 min |
| Aug 8, 12:04 AM MDT | Severe Thunderstorm Warning | TFX | Pondera, Toole | 26 min |
| Aug 8, 12:30 AM MDT | Severe Thunderstorm Warning | TFX | Liberty, Toole | 30 min |
| Aug 8, 5:00 PM MDT | Severe Thunderstorm Watch | SPC | Dawson, Richland, Roosevelt, Wibaux | 5 hr |
| Aug 8, 6:50 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 60 min |
| Aug 8, 7:48 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 62 min |
| Aug 8, 7:51 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 64 min |
| Aug 11, 2:30 PM MDT | Tornado Watch | SPC | Richland, Wibaux | 7 hr |
| Aug 11, 4:45 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 60 min |
| Aug 11, 5:01 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 64 min |
| Aug 11, 6:11 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 64 min |
| Aug 11, 8:04 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 61 min |
| Aug 12, 5:46 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 29 min |
| Aug 13, 12:28 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead | 47 min |
| Aug 13, 1:26 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin, Madison | 49 min |
| Aug 13, 2:00 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead | 60 min |
| Aug 13, 2:55 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead, Madison | 50 min |
| Aug 13, 3:40 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin, Madison | 50 min |
| Aug 13, 4:46 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead, Madison | 44 min |
| Aug 13, 4:47 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 63 min |
| Aug 13, 5:17 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 63 min |
| Aug 13, 6:01 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Carbon | 64 min |
| Aug 13, 6:21 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 59 min |
| Aug 13, 6:37 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 53 min |
| Aug 13, 7:25 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 65 min |
| Aug 13, 8:09 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 31 min |
| Aug 14, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Broadwater, Carbon, Fergus, Gallatin, Garfield and 11 more | 6 hr |
| Aug 14, 4:57 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 48 min |
| Aug 14, 5:10 PM MDT | Tornado Warning | TFX | Fergus | 35 min |
| Aug 14, 5:21 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 39 min |
| Aug 14, 5:38 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 52 min |
| Aug 14, 5:45 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 30 min |
| Aug 14, 5:51 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 69 min |
| Aug 14, 6:17 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 43 min |
| Aug 14, 6:22 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 53 min |
| Aug 14, 6:37 PM MDT | Tornado Warning | TFX | Fergus | 33 min |
| Aug 14, 6:55 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 50 min |
| Aug 14, 7:00 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 60 min |
| Aug 14, 7:10 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 50 min |
| Aug 14, 7:12 PM MDT | Tornado Warning | TFX | Judith Basin | 33 min |
| Aug 14, 7:17 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 28 min |
| Aug 14, 7:35 PM MDT | Tornado Warning | TFX | Fergus, Judith Basin | 25 min |
| Aug 14, 7:54 PM MDT | Tornado Warning | TFX | Fergus | 66 min |
| Aug 14, 7:55 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 65 min |
| Aug 14, 8:00 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 60 min |
| Aug 14, 8:55 PM MDT | Tornado Warning | GGW | Garfield | 65 min |
| Aug 14, 8:57 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 63 min |
| Aug 14, 9:14 PM MDT | Tornado Warning | BYZ | Wheatland | 61 min |
| Aug 14, 9:54 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 66 min |
| Aug 14, 10:18 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 62 min |
| Aug 14, 10:22 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 38 min |
| Aug 14, 10:34 PM MDT | Tornado Warning | BYZ | Musselshell | 36 min |
| Aug 14, 10:42 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 63 min |
| Aug 14, 10:57 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 63 min |
| Aug 14, 11:10 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 65 min |
| Aug 14, 11:36 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 54 min |
| Aug 15, 12:04 AM MDT | Severe Thunderstorm Warning | GGW | Dawson | 56 min |
| Aug 15, 12:33 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 57 min |
| Aug 15, 1:49 AM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 61 min |
| Aug 15, 2:38 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 62 min |
| Aug 15, 2:44 AM MDT | Tornado Warning | BYZ | Golden Valley | 51 min |
| Aug 15, 2:59 AM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 66 min |
| Aug 15, 3:18 AM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 62 min |
| Aug 15, 3:46 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 59 min |
| Aug 15, 4:24 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 min |
| Aug 15, 4:50 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 45 min |
| Aug 15, 5:48 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Aug 15, 6:03 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 47 min |
| Aug 15, 6:30 AM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 30 min |
| Aug 15, 6:48 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Aug 15, 10:44 AM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 31 min |
| Aug 15, 10:53 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 47 min |
| Aug 15, 11:07 AM MDT | Tornado Warning | BYZ | Yellowstone | 48 min |
| Aug 15, 11:15 AM MDT | Tornado Watch | SPC | Big Horn, Carter, Custer, Dawson, Fallon, Garfield and 7 more | 6 hr |
| Aug 15, 11:49 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 61 min |
| Aug 15, 12:30 PM MDT | Tornado Warning | BYZ | Rosebud | 30 min |
| Aug 15, 12:36 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 64 min |
| Aug 15, 12:45 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 45 min |
| Aug 15, 12:56 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 59 min |
| Aug 15, 12:57 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 63 min |
| Aug 15, 1:41 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 49 min |
| Aug 15, 1:55 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 60 min |
| Aug 15, 1:56 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 64 min |
| Aug 15, 2:26 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 64 min |
| Aug 20, 6:43 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 62 min |
| Aug 21, 2:23 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Powell | 67 min |
| Aug 21, 5:46 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Teton | 34 min |
| Aug 24, 3:19 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 56 min |
| Aug 24, 6:53 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 62 min |
| Aug 24, 7:11 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Meagher | 64 min |
| Aug 24, 7:56 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 64 min |
| Aug 24, 8:12 PM MDT | Severe Thunderstorm Warning | TFX | Meagher | 48 min |
| Aug 27, 11:10 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| Aug 28, 12:29 PM MDT | Flash Flood Warning | GGW | Phillips | 3 hr |
| Aug 28, 12:30 PM MDT | Flash Flood Warning | TFX | Blaine, Fergus | 3 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 | |
| Severe Thunderstorm Warning | 103 |
| Tornado Warning | 12 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 2 |
| Flooding | |
| Flash Flood Warning | 5 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fergus County12
- Garfield County11
- Big Horn County9
- Judith Basin County9
- Golden Valley County8
- Stillwater County7
- Teton County7
- Musselshell County7
- Wheatland County6
- Toole County6
- Petroleum County6
- Rosebud County6
- Meagher County5
- Beaverhead County5
- Madison County5
- Missoula County5
- Pondera County5
- Yellowstone County5
- Richland County5
- Wibaux County5
- Broadwater County4
- Carbon County4
- Chouteau County4
- Gallatin County4
- Liberty County4
- Sweet Grass County4
- Carter County4
- Custer County4
- Treasure County4
- Flathead County3
- Lewis and Clark County3
- Powell County3
- Ravalli County3
- Sanders County3
- Dawson County3
- Cascade County2
- Deer Lodge County2
- Lake County2
- Lincoln County2
- Park County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.