Alert archive / Minnesota / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 176

May 9, 200433 counties in Minnesota; 32 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2004, 7:20 PM CDT for 33 counties in Minnesota; 32 counties in Wisconsin. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 9, 2004, 7:20 PM CDT (00:20 UTC)
Expired
May 10, 2004, 2:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 65 counties

Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Ramsey County, MN, Redwood County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Green Lake County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln 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, Pierce County, WI, Portage County, WI, Saint Croix 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

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

IssuedProductOfficeCountiesLasted
May 9, 7:21 PM CDTSevere Thunderstorm WarningMPXChippewa, Rusk54 min
May 9, 7:26 PM CDTSevere Thunderstorm WarningMPXPierce64 min
May 9, 7:35 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Nicollet, Sibley55 min
May 9, 7:40 PM CDTSevere Thunderstorm WarningMPXPepin50 min
May 9, 7:46 PM CDTSevere Thunderstorm WarningARXBuffalo59 min
May 9, 7:57 PM CDTSevere Thunderstorm WarningARXWabasha63 min
May 9, 8:01 PM CDTSevere Thunderstorm WarningFSDCottonwood, Murray29 min
May 9, 8:15 PM CDTTornado WarningFSDNobles30 min
May 9, 8:21 PM CDTSevere Thunderstorm WarningARXClark54 min
May 9, 8:22 PM CDTSevere Thunderstorm WarningMPXBrown53 min
May 9, 8:28 PM CDTSevere Thunderstorm WarningFSDCottonwood, Jackson, Murray, Nobles47 min
May 9, 8:29 PM CDTSevere Thunderstorm WarningGRBMarathon, Portage, Wood61 min
May 9, 8:33 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice57 min
May 9, 8:46 PM CDTSevere Thunderstorm WarningFSDNobles29 min
May 9, 8:48 PM CDTSevere Thunderstorm WarningARXBuffalo, Trempealeau57 min
May 9, 9:01 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet44 min
May 9, 9:10 PM CDTFlash Flood WarningARXWabasha4 hr
May 9, 9:25 PM CDTSevere Thunderstorm WarningMPXGoodhue65 min
May 9, 9:26 PM CDTSevere Thunderstorm WarningGRBPortage, Wood49 min
May 9, 9:34 PM CDTSevere Thunderstorm WarningMPXRice41 min
May 9, 9:55 PM CDTSevere Thunderstorm WarningGRBMarathon, Shawano, Waupaca50 min
May 9, 10:01 PM CDTSevere Thunderstorm WarningARXWabasha59 min
May 9, 10:05 PM CDTSevere Thunderstorm WarningFSDNobles25 min
May 9, 10:08 PM CDTSevere Thunderstorm WarningARXDodge, Olmsted67 min
May 9, 10:23 PM CDTSevere Thunderstorm WarningARXBuffalo37 min
May 9, 10:47 PM CDTSevere Thunderstorm WarningARXMower73 min
May 9, 10:52 PM CDTSevere Thunderstorm WarningARXWinona68 min
May 9, 11:45 PM CDTSevere Thunderstorm WarningARXFillmore, Houston60 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

Davenport, (KDVN), launched 00:00Z, 0.3 hours before the alert went out and 338 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, Davenport, at 00:00Z on 2004-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 903 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, Davenport, at 00:00Z on 2004-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
903 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1798 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 8:09 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Cottonwood, Dodge, Faribault, Fillmore and 15 more2 hr
May 9, 10:21 PM CDTMesoscale DiscussionSPCDodge, Fillmore, Freeborn, Houston, Mower, Olmsted and 1 more114 min
May 10, 11:05 AM CDTMesoscale DiscussionSPCGreen, Kenosha, Lafayette, Rock, Walworth115 min

Nearby

Severe Thunderstorm Watches in Minnesota, 2004Severe Thunderstorm Watches in Wisconsin, 2004Every severe thunderstorm watch in 2004

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.