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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1942Z Nov 11, 2019)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 242 PM EST Mon Nov 11 2019 Valid 00Z Tue Nov 12 2019 - 00Z Thu Nov 14 2019 ... Widespread record cold possible Tuesday and Wednesday from the Southern Plains, Mississippi Valley, Ohio Valley, Great Lakes, Southeast and East... ...Early season heavy snows likely from Western to Northern New York State into Northern New England... ...Active Lake Effect snows will lead to locally heavy snows downwind of the Great Lakes... ...Warm and dry conditions over the West with elevated fire weather threat for portions of Southern California and the Southwest... The arctic airmass that has settled across much of the northern and central U.S. will continue to push south and eastward, spreading the much below average temperatures into the Southeast and East on Tuesday and continuing into Wednesday. Much of the central and eastern U.S. will be enveloped in a region of much below average temperatures over the next two days, along with potential for widespread record cold morning low temperatures and record low afternoon high temperatures. In contrast to the central and eastern U.S. record cold, much above average temperatures expected across the West into the Great Basin and Rockies. The warm temperatures, low relative humidities and dry conditions will result in an increased fire weather threat for portions of Southern California into the Southwest over the next two days. An area of low pressure developing along the arctic front over the Ohio Valley will push northeast into the northern Mid-Atlantic and New England tonight into Tuesday. Heavy snows likely on the northern and northwest side of this low from western to northern New York State into Northern New England. A large region of winter storm warnings are in effect across these areas with snowfall accumulations of 6-12" likely to produce hazardous travel conditions. The arctic air spilling southeastward across the Great Lakes in the wake of this low will ignite active lake effect snow showers, with locally heavy snows likely in the favored regions downwind of all the Great Lakes. While the heaviest snows are expected from the Great Lakes into northern NY state and northern New England, rains will likely to change to snow as the arctic front passing across the Ohio Valley, Tennessee Valley and into the Central to Southern Appalachians, with light snow accumulations possible. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php