Winter Weather, Iowa
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Iowa forecast zone
- Reported by
- Newspaper
- Coordinates
- 43.001, -90.135 (the zone’s center; the record gives no point)
Winter Weather in Wisconsin, March 19 to 20, 2010
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.
Where it happened
Every event with a place to put it; 11 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 7
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 11
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS MKX wrote it up.
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.
The radar
The national radar mosaic for the moment the first event began.
Event by event
11 winter weather. Local standard time, as filed.
Winter Weather, Dane
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Dane forecast zone
- Reported by
- Newspaper
- Coordinates
- 43.067, -89.418 (the zone’s center; the record gives no point)
Winter Weather, Jefferson
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Jefferson forecast zone
- Reported by
- Newspaper
- Coordinates
- 43.021, -88.776 (the zone’s center; the record gives no point)
Winter Weather, Waukesha
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Waukesha forecast zone
- Reported by
- Newspaper
- Coordinates
- 43.018, -88.304 (the zone’s center; the record gives no point)
Winter Weather, Milwaukee
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Milwaukee forecast zone
- Reported by
- Newspaper
- Coordinates
- 43.022, -87.929 (the zone’s center; the record gives no point)
Winter Weather, Lafayette
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Lafayette forecast zone
- Reported by
- Newspaper
- Coordinates
- 42.661, -90.132 (the zone’s center; the record gives no point)
Winter Weather, Green
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Green forecast zone
- Reported by
- Newspaper
- Coordinates
- 42.680, -89.602 (the zone’s center; the record gives no point)
Winter Weather, Rock
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Rock forecast zone
- Injuries
- 0 direct, 7 indirect
- Reported by
- Newspaper
- Coordinates
- 42.671, -89.072 (the zone’s center; the record gives no point)
Winter Weather, Walworth
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Walworth forecast zone
- Reported by
- Newspaper
- Coordinates
- 42.669, -88.542 (the zone’s center; the record gives no point)
Winter Weather, Racine
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Racine forecast zone
- Reported by
- Newspaper
- Coordinates
- 42.730, -87.812 (the zone’s center; the record gives no point)
Winter Weather, Kenosha
- When
- March 19, 8:00 PM CST to March 20, 4:00 PM CST
- Where
- Kenosha forecast zone
- Reported by
- Newspaper
- Coordinates
- 42.573, -87.840 (the zone’s center; the record gives no point)
What these are
- Winter Weather
- Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Avalanche in Colorado, March 19, 2010
- Winter Storm and Winter Weather in Kansas, March 19 to 21, 2010
- Winter Storm and Winter Weather in Oklahoma, March 19 to 21, 2010
- Winter Weather in Iowa, March 19 to 20, 2010
- Winter Storm and Winter Weather in Texas, March 19 to 20, 2010
- Winter Storm in Colorado, March 19 to 20, 2010
- Heavy Snow in New Mexico, March 19 to 20, 2010
- Winter Weather in Illinois, March 19 to 20, 2010
- Heavy Snow in Iowa, March 19 to 20, 2010
- Winter Storm and Heavy Snow in Kansas, March 19 to 21, 2010
- Winter Storm in Kansas, March 19 to 21, 2010
- Winter Storm in Missouri, March 19 to 21, 2010
More
Every storm in Wisconsin in 2010Every state in 2010This day in weather historyWarnings in Wisconsin, March 2010
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 221898, 221899, 221900, 221901, 221902, 221903, 221904, 221905, 221906, 221907, 221909.