Alert archive / Wisconsin / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 591

August 11, 200225 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Aug 11, 2002, 4:55 PM CDT for 25 counties in Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Aug 11, 2002, 4:55 PM CDT (21:55 UTC)
Expired
Aug 11, 2002, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Barron County, WI, Bayfield County, WI, Brown County, WI, Burnett County, WI, Douglas County, WI, Forest County, WI, Iron County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Vilas County, WI, Washburn County, WI, Waupaca County, WI

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 11, 5:10 PM CDTSevere Thunderstorm WarningGRBMenominee, Oconto65 min
Aug 11, 5:24 PM CDTSevere Thunderstorm WarningDLHPrice66 min
Aug 11, 5:30 PM CDTSevere Thunderstorm WarningGRBLincoln60 min
Aug 11, 5:35 PM CDTSevere Thunderstorm WarningMPXRusk25 min
Aug 11, 5:41 PM CDTSevere Thunderstorm WarningGRBOneida64 min
Aug 11, 5:59 PM CDTSevere Thunderstorm WarningGRBOconto61 min
Aug 11, 6:59 PM CDTSevere Thunderstorm WarningMPXRusk61 min

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.9 hours before the alert went out and 227 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.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2002-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2002-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
14 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1454 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

Nearby

Severe 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.