Alert archive / North Dakota / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 613
The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2008, 6:46 PM CDT for 7 counties in Minnesota; 29 counties in North Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2008, 6:46 PM CDT (23:46 UTC)
- Expired
- Jun 26, 2008, 11:29 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 36 counties
Clay County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Wilkin County, MN, 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, McIntosh County, ND, Morton County, ND, Nelson 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, Wells County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 108 km from the middle of the area, began a volume at 23:49 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
- 20%
- 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
- 95%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 6:49 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, McLean, Sheridan | 56 min |
| Jun 26, 6:57 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 63 min |
| Jun 26, 7:08 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder | 67 min |
| Jun 26, 7:15 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, Morton, Sioux | 60 min |
| Jun 26, 7:50 PM CDT | Severe Thunderstorm Warning | BIS | Sioux | 25 min |
| Jun 26, 7:54 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 66 min |
| Jun 26, 8:15 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, Sioux | 60 min |
| Jun 26, 9:15 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 60 min |
| Jun 26, 9:20 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 55 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.8 hours before the alert went out and 173 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 14 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 1230 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 6:38 AM CDT | Severe Thunderstorm Watch | SPC | Rock | 6 hr |
| Jun 26, 1:41 PM CDT | Mesoscale Discussion | SPC | Billings, Burleigh, Dunn, Golden Valley, Grant, Hettinger and 13 more | 94 min |
| Jun 26, 1:59 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 22 more | 5 hr |
| Jun 26, 6:28 PM CDT | Mesoscale Discussion | SPC | Barnes, Benson, Burleigh, Cass, Cavalier, Dickey and 22 more | 62 min |
Nearby
Severe Thunderstorm Watches in North Dakota, 2008Severe Thunderstorm Watches in Minnesota, 2008Every severe thunderstorm watch in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.