Alert archive / North Dakota / Tornado Watches in 2008
Tornado Watch 354
The Storm Prediction Center issued this tornado watch at May 24, 2008, 8:07 PM CDT for 13 counties in Minnesota; 14 counties in North Dakota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 24, 2008, 8:07 PM CDT (01:07 UTC)
- Expired
- May 24, 2008, 10:53 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 27 counties
Becker County, MN, Clay County, MN, Grant County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Cavalier County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 31 km from the middle of the area, began a volume at 01:09 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 8:25 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom | 46 min |
| May 24, 8:45 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 60 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 00:00Z, 1.1 hours before the alert went out and 273 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
- 145 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 672 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 9:01 PM CDT | Mesoscale Discussion | SPC | Big Stone, Brown, Chippewa, Cottonwood, Jackson, Kandiyohi and 18 more | 59 min |
| May 24, 9:26 PM CDT | Mesoscale Discussion | SPC | Becker, Clay, Clearwater, Douglas, Grant, Kittson and 9 more | 2 hr |
| May 25, 9:56 AM CDT | Mesoscale Discussion | SPC | Benton, Carlton, Cook, Isanti, Kanabec, Mille Lacs and 4 more | 94 min |
| May 25, 12:43 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Blue Earth, Brown, Carver, Chisago and 33 more | 92 min |
| May 25, 2:04 PM CDT | Tornado Watch | SPC | Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 29 more | 6 hr |
| May 25, 2:25 PM CDT | Mesoscale Discussion | SPC | Aitkin, Beltrami, Carlton, Cass, Crow Wing, Hubbard and 10 more | 35 min |
| May 25, 2:45 PM CDT | Tornado Watch | SPC | Aitkin, Beltrami, Benton, Carlton, Cass, Cook and 14 more | 6 hr |
| May 25, 6:01 PM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Carlton, Carver, Cass and 20 more | 59 min |
Nearby
Tornado Watches in North Dakota, 2008Tornado Watches in Minnesota, 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; radar from the NEXRAD Level II archive.