Marginal Risks of Severe Storms on the Central Plains; Flash flooding on the Northern Plains; Frost & Freeze Warnings in portions of the West & Northeast

A storm system developing across the Plains may cause locally severe weather in western Kansas and southwestern Nebraska today, with isolated flash flooding possible in portions of eastern Montana and western North Dakota. Frost and Freeze Warnings are in effect for portions of the central Rockies and central Appalachians tonight into Friday morning. Read More >

Overview

A long duration snow fell across much of Wisconsin, beginning Saturday afternoon, December 10th and ending Sunday evening, December 11, 2016. The heaviest snow fell from the La Crosse area down into southeast Wisconsin. The snow was light and powdery with the highest totals running in the 6 to 10 inch range. See the snow graphics below.

Low pressure tracked out of the Central Plains and passed slowly by to our south. See the map to the right. This is an ideal track for snow across southern Wisconsin. Media reported major flight delays and cancellations due to the snow in the Chicago area.

Surface Pressure Analysis 6 am 12/11/16

Snow maps
Photos

Snow: Observed Amounts

The image below is a rough analysis of the snow amounts reported to us. These amounts come from our cooperative observers, airport observers and the general public (via storm reports and social media).

Observed snowfall analysis from various observers after the storm

Here is a .pdf document with a 2 day total listing of observations from the various observers across south central and southeast Wisconsin. These amounts helped build the image above on the left.

Photos:

Pictures submitted via social media


Amy Jo Jewell-Reimer Reedsburg	Beth Walsh Delavan	Jim Steffen Grafton	Kevin Phenis Greenfield

Isaac Schluesche Drone - Sun Prairie	Lauren Webb Menomonee Falls	Luanne Schulz Madison	Mark Preuschl Beloit

Mark Preuschl Beloit	Matthew De Witt Union Grove	Ryan La Fave Racine	Trisha Faber West Bend

Jen Grudowskie Holy Hill, Richfield	Andrew Meier Kenosha	Amber Halton Howards Grove	Allison Carr Pleasant Prairie