Friday, December 19, 2008

Many to know Winter is officially here

What a storm! Ice and Snow is covering a large swath of the nation along the I80 corridor from NE into PA and southward to the I70 corridor. Here are some ice and snow accumulations as of 8 AM Friday:

Kansas City, MO (0.2” ice)
Maryville, MO (1” ice)
St. Joseph, MO (0.1” ice)

Chillicothe, MO (0.25” ice)
Kirksville, MO (0.5” ice)

Quincy, IL (0.25” ice)
Peoria, IL (0.5” ice)
Springfield, IL (0.15” ice)
Bloomington, IL (0.4” ice)
Stephenson, IL (8” Snow)

Dubuque, IA (8.8” Snow)
Keokuk, IA (0.75” Ice)
Macomb, IA (0.75” Ice)
Chicago, IL (2” snow)
Argyle, WI (10” snow)
Waukesha, WI (10.2” snow)

Madison, WI (8.8” snow)
Milwaukee, WI (9” snow)


The major storm that delivered this snow and ice is now moving into MI/OH/PA/NY and will continue to move eastward through New England today/tonight.

Attention turns next to an Arctic blast that will usher in the official beginning of winter for many, especially east of the Rockies. Winter officially begins on Sunday, and by then, the Arctic air mass will cover most of the Eastern U.S. making it as far south as the I-10 corridor from TX into the western peninsula of FL. This will be the coldest air mass of the season so far.

Like the Arctic blast that entered the U.S. last weekend, it will also deliver blizzard conditions to many in the northern tier of the country from eastern MT through the Dakotas and MN and into the Great Lakes.


Christmas Outlook

The pattern will still remain active through the Christmas week. With Arctic air in place and a storm system forecast to drop out of the Pacific NW into the Rockies Mon/Tue, MS Valley Tue night/Christmas Eve and into ME by Christmas morning. This system will likely deliver new snow from the Plains into the Great Lakes. Question is how far south will the snow fall? There are still significant differences and in consistencies with the modeling data to put high confidence in the forecast, yet. However,
this is a system to monitor as it may bring a white Christmas to many along and north of the Mason Dixie line. Here is this morning’s model depiction of where and how much snow it thinks will be on the ground Christmas morning.

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