Alert archive / Wisconsin / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 240

May 6, 200211 counties in Iowa; 9 counties in Minnesota; 37 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at May 6, 2002, 3:30 PM CDT for 11 counties in Iowa; 9 counties in Minnesota; 37 counties in Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2002, 3:30 PM CDT (20:30 UTC)
Expired
May 6, 2002, 8:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 57 counties

Allamakee County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Goodhue County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Steele County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Green Lake County, WI, Jackson County, WI, Juneau County, WI, Kewaunee County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Pepin County, WI, Portage County, WI, Richland County, WI, Sauk County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 6, 3:59 PM CDTSevere Thunderstorm WarningGRBMarathon46 min
May 6, 4:12 PM CDTSevere Thunderstorm WarningGRBPortage48 min
May 6, 4:16 PM CDTSevere Thunderstorm WarningARXJackson44 min
May 6, 4:46 PM CDTSevere Thunderstorm WarningGRBWaupaca44 min
May 6, 4:50 PM CDTSevere Thunderstorm WarningGRBWood40 min
May 6, 5:13 PM CDTSevere Thunderstorm WarningGRBWaushara, Winnebago32 min
May 6, 5:14 PM CDTSevere Thunderstorm WarningARXAdams, Juneau46 min
May 6, 5:25 PM CDTSevere Thunderstorm WarningMKXColumbia, Marquette, Sauk65 min
May 6, 5:26 PM CDTTornado WarningGRBWaupaca34 min
May 6, 5:43 PM CDTTornado WarningGRBOutagamie, Winnebago47 min
May 6, 5:49 PM CDTSevere Thunderstorm WarningGRBWaushara41 min
May 6, 5:50 PM CDTSevere Thunderstorm WarningARXHoward, Winneshiek40 min
May 6, 6:06 PM CDTSevere Thunderstorm WarningGRBCalumet24 min
May 6, 6:16 PM CDTTornado WarningGRBCalumet29 min
May 6, 6:27 PM CDTSevere Thunderstorm WarningGRBBrown33 min
May 6, 6:28 PM CDTSevere Thunderstorm WarningMKXColumbia17 min
May 6, 6:29 PM CDTSevere Thunderstorm WarningARXWinneshiek16 min
May 6, 6:30 PM CDTSevere Thunderstorm WarningGRBWaushara45 min
May 6, 6:35 PM CDTSevere Thunderstorm WarningGRBManitowoc40 min
May 6, 6:36 PM CDTSevere Thunderstorm WarningARXAllamakee54 min
May 6, 6:43 PM CDTSevere Thunderstorm WarningGRBCalumet32 min
May 6, 7:13 PM CDTSevere Thunderstorm WarningGRBManitowoc32 min
May 6, 7:15 PM CDTSevere Thunderstorm WarningGRBWinnebago30 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.5 hours before the alert went out and 222 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, Minneapolis, MN at 12:00Z on 2002-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 2002-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939587897117136156Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
438 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 8:00 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 51 more5 hr
May 6, 5:30 PM CDTSevere Thunderstorm WatchSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 18 more6 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 2002Severe Thunderstorm Watches in Iowa, 2002Severe Thunderstorm Watches in Minnesota, 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.