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Short Range Public Discussion
 
(Latest Discussion - Issued 1812Z Jan 26, 2023)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 107 PM EST Thu Jan 26 2023 Valid 00Z Fri Jan 27 2023 - 00Z Sun Jan 29 2023 ...Effects from recent strong eastern storm to continue to wane Thursday night into early Friday... ...Arctic air to surge south into the Northern Plains/Upper Mississippi Valley Friday into Saturday with dangerous wind chill readings likely by this weekend... ...Heavy snows likely through the Northern Rockies and in the lee of the Northern Rockies from Thursday night into Saturday... The strong storm that has affected large portions of the nation over the past few days from the Southern Plains into New England will continue to push northeastward away from the U.S. and across the Canadian Maritimes Thursday afternoon into Thursday night. The well organized area of precipitation ahead of this low will also be pushing out of eastern New England Thursday afternoon. In its wake, cold west northwesterly flow off of the Great Lakes will support lake effect snow showers in the lee of the lakes and into the upslope of the Central to Southern Appalachians Thursday evening/night, but should be diminishing by Friday. An arctic frontal boundary will begin to press southward from south central Canada tonight and into Northern Plains to Upper Mississippi Valley region on Friday. This arctic front will then continue to surge southward into the Central Plains on Saturday. Sharply colder temperatures expected in the wake of this front across the Northern to Central Plains and Upper Mississippi Valley region by this weekend with high temperatures 10 to 20 degrees below average. This translates into high temperatures near zero Saturday from northeastern Montana, across North Dakota, northeast South Dakota and northwest Minnesota. These cold temperatures combined with windy conditions will result in dangerous wind chills readings this weekend across these areas. In addition to the very cold temperatures and wind chill readings expected with this arctic front, heavy snows will also be developing Thursday night and continuing into Saturday across the Northern Rockies and in the lee of the Northern Rockies. Total snowfall accumulations over the next few days area expected to be in the 1 to 2 foot range across these areas. A narrow band of heavy snows may also begin to push eastward along the arctic frontal boundary across portions of the Northern to Central Plains into the Upper Mississippi Valley Friday night into Saturday. Oravec Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php