Rain changed over to snow over most of Southeast Wisconsin and far southeast portions of South-central Wisconsin as low pressure followed a favored track from southern Missouri to eastern Lower Michigan during the day on January 30th.   Snow accumulations between 3 and 5 inches were reported along and southeast of a Rock County to Ozaukee County line.  A slower transition from rain to snow limited total snow accumulations to 1 to 3 inches in Milwaukee...Racine and Kenosha counties.  Increasing northwest winds behind the low pressure produced areas of blowing and drifting snow as wind gusts reached 30 to 35 mph (26 to 29 knots).  Roads glazed over as the standing water from early rains froze when temperatures dropped, which along with the blowing and drifting snow was sufficient, when combined with the accumulating snow, to create hazardous travel conditions.  Numerous accidents and spin-offs were reported by area law enforcement officials, including an injury accident in Jefferson County.  Meteorologically, deep forcing with sloped frontogenesis and strong layer Q-vector convergence, combined with some convective instability in and above the dendritic growth zone, produced moderate to briefly intense snowfall intensities.

Winter Weather in WASHINGTON, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: Public

The public estimated 5.0 inches of total snow accumulation in an unincorporated area in the northwest corner of Washington County.

Winter Weather in OZAUKEE, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer in Cedarburg reported total snow accumulations of 3.6 inches.

Winter Weather in WAUKESHA, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located in Oconomowoc reported total snow accumulations of 3.1 inches.

Winter Weather in MILWAUKEE, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located in West Allis reported total snow accumulations of 2.0 inches.

Winter Weather in ROCK, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located in Edgerton reported total snow accumulations of 5.0 inches.

Winter Weather in WALWORTH, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located in Elkhorn reported total snow accumulations of 2.5 inches.

Winter Weather in RACINE, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located in Waterford reported total snow accumulations of 2.6 inches.

Winter Weather in KENOSHA, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: Public

The public located in an unincorporated area of north central Kenosha County reported total snow accumulations of 2.0 inches.

Winter Weather in JEFFERSON, WISCONSIN
From 30-JAN-13 08:00:00 to 30-JAN-13 17:48:00 (CST-6)
Reported by: COOP Observer

A co-operative observer located  2 miles south of Watertown reported total snow accumulations of 5.8 inches. The slick driving conditions resulted in three injury accidents in Jefferson County, including a car losing control and causing a head-on collision on Highway 16 in northern Jefferson County. Both drivers in that accident  were taken to nearby hospitals for treatment of non life-threatening injuries (indirectly-related). No information was available for the other two accidents.