Alert archive / Montana / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 463
The Storm Prediction Center issued this severe thunderstorm watch at Aug 3, 2013, 1:50 PM MDT for 30 counties in Montana. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2013, 1:50 PM MDT (19:50 UTC)
- Expired
- Aug 3, 2013, 10:41 PM MDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 65 kt
All 30 counties
Big Horn County, MT, Blaine County, MT, Carter County, MT, Cascade County, MT, Chouteau County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Fergus County, MT, Garfield County, MT, Golden Valley County, MT, Hill County, MT, Judith Basin County, MT, McCone County, MT, Meagher County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT, Wibaux County, MT, Yellowstone County, MT
The radar
The Glasgow radar (KGGW), 117 km from the middle of the area, began a volume at 19:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 2:19 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 56 min |
| Aug 3, 3:03 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 72 min |
| Aug 3, 4:01 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 59 min |
| Aug 3, 4:11 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 64 min |
| Aug 3, 4:58 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 62 min |
| Aug 3, 5:00 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 60 min |
| Aug 3, 5:11 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 64 min |
| Aug 3, 5:15 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River, Rosebud | 45 min |
| Aug 3, 5:34 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 41 min |
| Aug 3, 5:36 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 54 min |
| Aug 3, 5:56 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 64 min |
| Aug 3, 5:58 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 47 min |
| Aug 3, 6:00 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 60 min |
| Aug 3, 6:01 PM MDT | Flash Flood Warning | BYZ | Powder River | 3 hr |
| Aug 3, 6:11 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 49 min |
| Aug 3, 6:15 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 45 min |
| Aug 3, 6:23 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 67 min |
| Aug 3, 6:44 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 46 min |
| Aug 3, 6:59 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 46 min |
| Aug 3, 7:11 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River | 64 min |
| Aug 3, 7:23 PM MDT | Tornado Warning | BYZ | Powder River | 22 min |
| Aug 3, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 61 min |
| Aug 3, 7:40 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 50 min |
| Aug 3, 7:44 PM MDT | Tornado Warning | BYZ | Powder River | 31 min |
| Aug 3, 8:20 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 25 min |
| Aug 3, 8:29 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 61 min |
| Aug 3, 9:26 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 64 min |
| Aug 3, 9:55 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 65 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 1:17 PM MDT | Mesoscale Discussion | SPC | Blaine, Chouteau, Custer, Dawson, Fallon, Fergus and 15 more | 118 min |
| Aug 3, 5:44 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carter, Custer, Dawson, Fallon, Garfield and 10 more | 61 min |
Nearby
Severe Thunderstorm Watches in Montana, 2013Every severe thunderstorm watch in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.