National Weather Service United States Department of Commerce

Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

November 20-21st, 2015 Southern Wisconsin Snow Storm

 

Southern Wisconsin was hit by a major snowstorm that was impressive for any time during a winter season, much less one that occurred in November.   The storm (surface low pressure) tracked from eastern/northeast Kansas early Friday evening,  November 20th, to St. Louis to Indianapolis by mid-day on the 21st.  But, typical for these early season lows, the warm Great Lakes likely resulted in a trof axis extending from the low north into Lake Michigan. This likely helped the moisture and forcing to reach farther north than that southern track would normally allow.

Below is the 2-day accumulation:

 

 

Here is a 24 hour loop of radar during the event.  The loop is composed of 30 minute time steps starting at 2 PM CST, November 20th and running through 1:30 PM CST November 21st, 2015.   Click the image for a larger version of the loop (about 7mb).

The table below is a collection of analyzed surface maps running from early evening on Friday through early afternoon on Saturday. 

Surface Map 7 PM Friday, November 21

Surface Map 10 PM Friday, November 21

Surface Map 1 AM Saturday, November 22

Surface Map 4 AM Saturday, November 22

Surface Map 7 AM Saturday, November 22

Surface Map 10 AM Saturday, November 22

Surface Map 1 PM Saturday, November 22

Surface Map 7 PM Friday, November 21

Surface Map 10 PM Friday, November 21

Surface Map 1 AM Saturday, November 22

Surface Map 4 AM Saturday, November 22

Surface Map 7 AM Saturday, November 22

Surface Map 10 AM Saturday, November 22

Surface Map 1 PM Saturday, November 22

 

Below are two graphics showing our forecast snow amounts made early Thursday and early Friday morning.

 

Forecast made early Thursday Morning

Forecast made early Friday morning

 


Davis