Alert archive / North Dakota / Severe Thunderstorm Watches in 2009
Severe Thunderstorm Watch 565
The Storm Prediction Center issued this severe thunderstorm watch at Jul 8, 2009, 10:29 PM CDT for 34 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2009, 10:29 PM CDT (03:29 UTC)
- Expired
- Jul 9, 2009, 4:01 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Particularly dangerous situation
- Yes
- Largest hail expected
- 2 in
- Strongest gust expected
- 80 kt
All 34 counties
Barnes County, ND, Benson County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND, Ward County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 94 km from the middle of the area, began a volume at 03:30 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
- 90%
- One or more gusts of 65 knots or more
- 80%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 10:55 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, McLean, Mercer, Morton, Oliver and 1 more | 65 min |
| Jul 8, 10:58 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Emmons, Grant, Hettinger, Morton, Sioux and 1 more | 62 min |
| Jul 9, 1:09 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder | 66 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 |
|---|---|---|---|---|
| Jul 8, 9:42 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Dunn, Golden Valley, Grant and 14 more | 93 min |
| Jul 8, 11:27 PM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Burleigh, Cass, Dickey, Eddy and 28 more | 93 min |
| Jul 9, 3:07 AM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Burleigh, Cass, Dickey, Eddy and 23 more | 83 min |
Nearby
Severe Thunderstorm Watches in North Dakota, 2009Every severe thunderstorm watch in 2009
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.