Alert archive / Montana / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 268
The Storm Prediction Center issued this severe thunderstorm watch at May 13, 2007, 2:32 PM MDT for 22 counties in Montana. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 13, 2007, 2:32 PM MDT (20:32 UTC)
- Expired
- May 13, 2007, 10:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 22 counties
Big Horn County, MT, Carbon County, MT, Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, Golden Valley County, MT, McCone County, MT, Musselshell County, MT, Park County, MT, Petroleum County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Wheatland County, MT, Wibaux County, MT, Yellowstone County, MT
The radar
The Billings radar (KBLX), 68 km from the middle of the area, began a volume at 20:36 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
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 3:12 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Wheatland | 63 min |
| May 13, 3:18 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 57 min |
| May 13, 3:34 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 56 min |
| May 13, 4:12 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 63 min |
| May 13, 4:24 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 29 min |
| May 13, 4:40 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater, Wheatland | 80 min |
| May 13, 4:59 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Sweet Grass | 61 min |
| May 13, 5:09 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 66 min |
| May 13, 5:58 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure, Yellowstone | 62 min |
| May 13, 6:12 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 33 min |
| May 13, 6:19 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 44 min |
| May 13, 6:24 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 66 min |
| May 13, 6:37 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure | 53 min |
| May 13, 6:38 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 67 min |
| May 13, 6:53 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland, Roosevelt | 67 min |
| May 13, 6:54 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure, Yellowstone | 57 min |
| May 13, 7:26 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Roosevelt, Valley | 64 min |
| May 13, 7:27 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 63 min |
| May 13, 7:30 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure | 45 min |
| May 13, 7:46 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 59 min |
| May 13, 7:49 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 56 min |
| May 13, 8:01 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland | 59 min |
| May 13, 8:14 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 31 min |
| May 13, 8:22 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 53 min |
| May 13, 8:34 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Richland, Wibaux | 56 min |
| May 13, 8:56 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 64 min |
| May 13, 9:13 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 32 min |
| May 13, 9:22 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 23 min |
| May 13, 9:25 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Richland, Wibaux | 65 min |
| May 13, 9:46 PM MDT | Flash Flood Warning | BYZ | Custer, Fallon, Rosebud | 119 min |
| May 13, 9:58 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 47 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 |
|---|---|---|---|---|
| May 13, 1:49 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Custer, Gallatin, Garfield, Golden Valley and 10 more | 56 min |
| May 13, 4:58 PM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Custer, Garfield, McCone, Musselshell and 6 more | 92 min |
Nearby
Severe Thunderstorm Watches in Montana, 2007Every severe thunderstorm watch in 2007
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.