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It was an active week across southern Wisconsin as winter finally arrived! After a mild and dry start to the winter season, there were two strong low pressure systems that impacted Wisconsin and dumped over a foot of snow in a span of 5 days, with pockets seeing over 2 feet in some spots! Not only did these systems produced heavy snow, blizzards across the U.S. it also brought flooding, severe thunderstorms, and tornadoes to other parts of the country. At one point there was at least one NWS Watch, Warning, or Advisory headline in all 50 states as captured at 8:50 AM CST on January 12th!

In southern Wisconsin, the first strong low pressure system tracked across southern Illinois and brought heavy snow to inland portions of the area on Tuesday, January 9th. However warmer Lake Michigan water temps still sitting in the 40s and air temperatures hovering around freezing, limited snowfall amounts for areas closer to the lake, with even rain right up along the lakefront. 

Then a smaller, clipper system track across the area dropping another a few inches of fluffy snow early Thursday morning, January 11th.

To wrap up the week, an even stronger low pressure system strengthened rapidly as it crossed Illinois and Lower Michigan and brought strong winds and heavy snow to the region. The late week dumped over a foot of snow across most of southern Wisconsin on Friday, January 12th. Again the warmer Lake Michigan water temps impacted snow amounts along the lake, but with temperatures at or below freezing it resulted in heavy wet snow just inland. This wetter, heavy snow accumulated on trees, powerlines, and other infrastructure causing lasting impacts across southeastern Wisconsin into the weekend. Snow eventually wrapped up later Saturday just before the bitter cold, Arctic airmass settled into the region.


NWS Watch, Warning, Advisories at 9AM EST Jan 12 - headline in all states at once

NWS Watches, Warnings and Advisories at 8:50 AM CST 12 JAN
There was a headline in ALL 50 states at one time!

5 Day Snowfall Map
5-Day Estimated Snowfall Total Map of Southern Wisconsin
(Period of 7 AM Monday, January 8 through 7 AM
Saturday, January 13)

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National Weather Service Milwaukee/Sullivan Meteorologist discussing the Winter Storm


Snowfall Measurement on the west side of Madison from January 9, 2024 Winter Storm

Photo By: Cam Hopman

Tree Damage from heavy, wet snow in Greendale, WI from January 12, 2024 snow storm

Photo By: Andrew Muehr from X

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