Winter Weather — Rock, Wisconsin

2010-03-19 to 2010-03-20 · Rock, Wisconsin

Wider weather episode

A typical winter weather event deposited 1 to 4 inches of snow across southern Wisconsin overnight March 19th into the morning hours of March 20th. The snow had a snow:water ratio of 10 to 1 to 12 to 1. Although not much of the snow accumulated on road surfaces it did accumulate and become icy on bridges and highway overpasses. This led to several vehicle accidents. One bridge on Interstate 39-90 about 6 miles south of Janesville became very icy by 0530 CST on March 20th. This resulted in 3 seperate vehicle accidents within 20 minutes. A total of seven (7) people were injured, and after the 3rd accident the Interstate was closed for 90 minutes and traffic detoured. The snow was a result of a band of convergence over Wisconsin in the mid-ldevel of the atmosphere which squeezed out what moisture was left in the wake of a departing cold front.

Source: NOAA Storm Events Database, event_id 221905. Narrative written by the NWS forecast office that issued the report.