A long-duration snow affected all of South Central and Southeast Wisconsin from the afternoon hours of February 21st to almost daybreak February 22nd.  Just prior to the snow, light freezing drizzle glazed untreated roads and other surfaces.  There was some lake-enhancement of the snow in those areas near Lake Michigan.   The media noted dozens of vehicle accidents. Maximum snow accumulations include 2.5 inches in Marquette Co., 3.5 inches in Green Lake Co., 4.5 inches in Fond du Lac and Sheboygan counties, around 2 inches in Sauk Co., 3 inches in Columbia Co., 4 inches in Dodge Co., 5.9 inches in Washington Co., 7.5 inches in Ozaukee Co., about 2 inches in Iowa Co., 2.5 inches in Dane Co., 3.4 inches in Jefferson Co., 6.4 inches in Waukesha Co., 6 inches in Milwaukee Co., 1.5 inches in Lafayette Co., 2 inches in Green Co., 3 inches in Rock Co., 2.5 inches in Walworth Co., 4 inches in Racine Co., and 3 inches in Kenosha Co.  The snow and freezing rain was related to forcing with an upper-level low pressure which moved from Minnesota southeast across southern Wisconsin along with convergence along an inverted surface trough that extended across southern Wisconsin.

Winter Weather in ROCK, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in WALWORTH, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in MARQUETTE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in GREEN LAKE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in FOND DU LAC, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in SHEBOYGAN, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in SAUK, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in RACINE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in KENOSHA, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in COLUMBIA, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in DODGE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in WASHINGTON, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in OZAUKEE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in IOWA, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in DANE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in JEFFERSON, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in MILWAUKEE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in LAFAYETTE, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winter Weather in GREEN, WISCONSIN
From 21-FEB-11 15:00:00 to 22-FEB-11 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer