Alert archive / Minnesota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 597
The Storm Prediction Center issued this severe thunderstorm watch at Aug 12, 2002, 12:30 AM CDT for 18 counties in Iowa; 22 counties in Minnesota; 12 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2002, 12:30 AM CDT (05:30 UTC)
- Expired
- Aug 12, 2002, 6:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Buena Vista County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clay County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Hancock County, IA, Howard County, IA, Humboldt County, IA, Kossuth County, IA, Mitchell County, IA, Palo Alto County, IA, Pocahontas County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Blue Earth County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Le Sueur County, MN, Martin County, MN, Mower County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 12:40 AM CDT | Severe Thunderstorm Warning | FSD | Clay | 35 min |
| Aug 12, 12:44 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 31 min |
| Aug 12, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Faribault | 50 min |
| Aug 12, 2:14 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 31 min |
| Aug 12, 2:27 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Washington | 48 min |
| Aug 12, 2:57 AM CDT | Severe Thunderstorm Warning | FSD | Clay | 33 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 5.5 hours before the alert went out and 124 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
- 1443 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1692 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 9:55 PM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 2 more | 5 hr |
| Aug 11, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Douglas, Grant, Lac qui Parle, Pope, Stevens and 1 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in Iowa, 2002Severe Thunderstorm Watches in Wisconsin, 2002Every severe thunderstorm watch in 2002
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.