Alert archive / Wisconsin / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 161

May 8, 2004Allamakee County, Winneshiek County, Iowa; Fillmore County, Houston County, Winona County, Minnesota; 35 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2004, 12:50 AM CDT for Allamakee County, Winneshiek County, Iowa; Fillmore County, Houston County, Winona County, Minnesota; 35 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 8, 2004, 12:50 AM CDT (05:50 UTC)
Expired: May 8, 2004, 7:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 40 counties

Allamakee County, IA, Winneshiek County, IA, Fillmore County, MN, Houston 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, Dodge County, WI, Eau Claire County, WI, Fond du Lac County, WI, Green Lake County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Manitowoc County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Ozaukee County, WI, Pepin County, WI, Portage County, WI, Richland County, WI, Sauk County, WI, Shawano County, WI, Sheboygan County, WI, Trempealeau County, WI, Vernon County, WI, Washington County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 87 km from the middle of the area, began a volume at 05:51 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 8, 12:55 AM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted	35 min
May 8, 1:30 AM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted	30 min
May 8, 2:01 AM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Winona	59 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

Minneapolis, MN (KMPX), launched 00:00Z, 5.8 hours before the alert went out and 272 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2481 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 375 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.

Issued	Product	Office	Counties	Lasted
May 7, 8:20 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Buchanan, Clayton, Delaware, Dubuque and 5 more	85 min
May 7, 9:53 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Crawford and 21 more	97 min
May 7, 10:20 PM CDT	Severe Thunderstorm Watch	SPC	Black Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 38 more	6 hr
May 8, 12:26 AM CDT	Mesoscale Discussion	SPC	Allamakee, Clayton, Winneshiek	64 min
May 8, 2:27 AM CDT	Mesoscale Discussion	SPC	Black Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 27 more	93 min
May 8, 3:36 AM CDT	Mesoscale Discussion	SPC	Allamakee, Winneshiek	54 min
May 8, 5:35 AM CDT	Mesoscale Discussion	SPC	Allamakee, Winneshiek	55 min
May 8, 2:27 PM CDT	Mesoscale Discussion	SPC	Adair, Audubon, Black Hawk, Boone, Bremer, Buena Vista and 37 more	3 hr
May 8, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 38 more	5 hr
May 8, 5:45 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Benton, Boone, Buena Vista and 33 more	2 hr
May 8, 5:08 PM CDT	Mesoscale Discussion	SPC	Calumet, Columbia, Dane, Dodge, Fond du Lac, Green Lake and 10 more	2 hr
May 8, 6:25 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Calumet, Columbia, Crawford, Dane, Dodge and 25 more	6 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 2004 Severe Thunderstorm Watches in Minnesota, 2004 Severe Thunderstorm Watches in Iowa, 2004 Every 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; radar from the NEXRAD Level II archive.