Alert archive / Minnesota / Tornado Watches in 2008
Tornado Watch 666
The Storm Prediction Center issued this tornado watch at Jul 7, 2008, 5:30 PM CDT for 9 counties in Minnesota; 9 counties in North Dakota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2008, 5:30 PM CDT (22:30 UTC)
- Expired
- Jul 7, 2008, 8:47 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Becker County, MN, Clay County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Cass County, ND, Cavalier County, ND, Grand Forks County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Steele County, ND, Traill County, ND, Walsh County, ND
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- 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
- 40%
- Six or more combined severe hail and wind reports
- 80%
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 |
|---|---|---|---|---|
| Jul 7, 5:52 PM CDT | Tornado Warning | FGF | Steele, Traill | 23 min |
| Jul 7, 6:00 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 60 min |
| Jul 7, 6:01 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 59 min |
| Jul 7, 6:18 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 28 min |
| Jul 7, 6:26 PM CDT | Tornado Warning | FGF | Marshall | 64 min |
| Jul 7, 6:30 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Roseau | 60 min |
| Jul 7, 6:49 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 56 min |
| Jul 7, 7:00 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Wilkin | 60 min |
| Jul 7, 7:23 PM CDT | Tornado Warning | FGF | Marshall | 39 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, 10.5 hours before the alert went out and 295 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
- 247 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 693 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 9:43 PM CDT | Mesoscale Discussion | SPC | Dodge, Goodhue, Le Sueur, Olmsted, Rice, Steele and 3 more | 92 min |
| Jul 7, 1:36 PM CDT | Mesoscale Discussion | SPC | Pipestone, Rock | 114 min |
| Jul 7, 1:51 PM CDT | Severe Thunderstorm Watch | SPC | Dodge, Faribault, Fillmore, Freeborn, Houston, Mower and 4 more | 7 hr |
| Jul 7, 2:45 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Clay, Douglas, Grant, Mahnomen and 11 more | 60 min |
| Jul 7, 3:14 PM CDT | Mesoscale Discussion | SPC | Fillmore, Houston, Mower, Olmsted, Winona | 91 min |
| Jul 7, 3:26 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Grant, Norman, Otter Tail, Polk, Wilkin | 5 hr |
| Jul 7, 5:08 PM CDT | Mesoscale Discussion | SPC | Becker, Clay, Kittson, Mahnomen, Marshall, Norman and 3 more | 67 min |
| Jul 7, 5:55 PM CDT | Mesoscale Discussion | SPC | Fillmore, Houston, Mower, Winona | 95 min |
| Jul 6, 8:51 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Burke, Dunn, Grant, Hettinger and 6 more | 54 min |
Nearby
Tornado Watches in Minnesota, 2008Tornado Watches in North Dakota, 2008Every tornado 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.