In the late evening hours of December 18th, a surface low pressure system began to move southeast out of the Dakotas. The system, originally characterized as a clipper due to its northwest to southeast motion, was unique in that it was ripe with Pacific moisture.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS MPX wrote it up.
In the late evening hours of December 18th, a surface low pressure system began to move southeast out of the Dakotas. The system, originally characterized as a clipper due to its northwest to southeast motion, was unique in that it was ripe with Pacific moisture. Accumulating snow started during the early morning hours on December 19th, with most of the snow falling during the morning commute. A few deformation bands of light snow continued through the evening of December 19th. The strongest snow bands ended up tracking farther south than forecast, providing notable snowfall accumulations only for Pepin and Pierce Counties.
Some of the highest snowfall amounts were:|7 inches of snowfall 3 miles southwest of Ellsworth, WI (Pierce)|6.4 inches of snowfall 2 miles northeast of Stockholm, WI (Pepin).
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before the first event at Dec 18, 5:53 PM CST, 10 hours 37 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
7 winter weather, 2 winter storm. Local standard time, as filed.
Interpolated snowfall analysis from CoCoRaHS observations showed three to seven inches of snow was measured across the county. The highest snowfall amount was 7 inches three miles southwest of Ellsworth, WI.
Interpolated snowfall analysis from CoCoRaHS observations showed three to seven inches of snow was measured across the county. The highest snowfall amount was 6.4 inches two miles northeast of Stockholm, WI.
Two to four inches of snowfall was measured across the county. The highest snowfall observation was 3.7 inches in Cumberland, WI.
Two to three inches of snowfall was measured across the county. The highest snowfall observation was three inches in Amery, WI.
Two to four inches of snowfall was measured across the county. The highest snowfall observation was 4.6 inches in Roberts, WI.
Two to three inches of snowfall was measured across the county. The highest snowfall observation was 3.2 inches in Menomonie, WI.
Two to four inches of snowfall was measured across the county. The highest snowfall observation was 4.1 inches in Chippewa Falls, WI.
Two to four inches of snowfall was measured across the county. The highest snowfall observation was 4.5 inches two miles north-northwest of Eleva, WI.
Two to three inches of snowfall was measured across the county. The highest snowfall observation was three inches in Big Falls, WI.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2024Every state in 2024This day in weather historyWarnings in Wisconsin, December 2024
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 2026-10-01. Each event’s entry at NCEI: 1221288, 1221289, 1221290, 1221291, 1221293, 1221294, 1221295, 1221296, 1221292.