Alert archive / Wisconsin / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 666

September 2, 20028 counties in Minnesota; 30 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Sep 2, 2002, 1:45 PM CDT for 8 counties in Minnesota; 30 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Sep 2, 2002, 1:45 PM CDT (18:45 UTC)
Expired: Sep 2, 2002, 8:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 38 counties

Dodge County, MN, Fillmore County, MN, Goodhue County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Barron County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Lincoln County, WI, Marathon County, WI, Monroe County, WI, Oneida County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Vilas County, WI, Washburn County, WI, Wood County, WI

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Sep 2, 3:55 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	65 min
Sep 2, 4:36 PM CDT	Tornado Warning	ARX	Taylor	54 min
Sep 2, 4:37 PM CDT	Tornado Warning	MPX	Rusk	38 min
Sep 2, 4:42 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	48 min
Sep 2, 4:57 PM CDT	Tornado Warning	DLH	Price	33 min
Sep 2, 5:21 PM CDT	Severe Thunderstorm Warning	ARX	Clark	54 min
Sep 2, 5:26 PM CDT	Tornado Warning	ARX	Taylor	64 min
Sep 2, 5:38 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	37 min
Sep 2, 5:39 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	81 min
Sep 2, 6:08 PM CDT	Tornado Warning	GRB	Marathon	52 min
Sep 2, 6:29 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	61 min
Sep 2, 6:59 PM CDT	Tornado Warning	GRB	Langlade, Marathon, Shawano	31 min
Sep 2, 7:35 PM CDT	Severe Thunderstorm Warning	GRB	Portage	40 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.8 hours before the alert went out and 168 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: 2159 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 2, 4:45 PM CDT	Tornado Watch	SPC	Fillmore, Houston, Winona	5 hr

Nearby

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