Alert archive / North Dakota / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 566
The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2007, 2:51 PM MDT for 5 counties in Montana; 17 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2007, 2:51 PM MDT (20:51 UTC)
- Expired
- Aug 7, 2007, 9:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 22 counties
Dawson County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Renville County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND
The radar
The Glasgow radar (KGGW), 216 km from the middle of the area, began a volume at 20:54 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
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 3:49 PM MDT | Severe Thunderstorm Warning | BIS | Bowman | 56 min |
| Aug 7, 3:56 PM MDT | Severe Thunderstorm Warning | BIS | Mountrail | 64 min |
| Aug 7, 4:40 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger, Slope | 48 min |
| Aug 7, 4:53 PM MDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer | 40 min |
| Aug 7, 4:56 PM MDT | Severe Thunderstorm Warning | BIS | Bowman | 62 min |
| Aug 7, 5:50 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 55 min |
| Aug 7, 5:59 PM MDT | Severe Thunderstorm Warning | BIS | Billings | 30 min |
| Aug 7, 6:30 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 45 min |
| Aug 7, 7:30 PM MDT | Severe Thunderstorm Warning | BIS | Ward | 30 min |
| Aug 7, 7:46 PM MDT | Severe Thunderstorm Warning | BIS | Mountrail | 28 min |
| Aug 7, 8:08 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 67 min |
| Aug 7, 8:32 PM MDT | Severe Thunderstorm Warning | BIS | McHenry, Ward | 58 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 7, 1:24 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Fallon, Powder River, Prairie, Rosebud | 2 hr |
| Aug 7, 1:59 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Custer, Fallon, Powder River | 7 hr |
| Aug 7, 5:30 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, McCone, Powder River and 3 more | 90 min |
Nearby
Severe Thunderstorm Watches in North Dakota, 2007Severe 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.