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Short Range Public Discussion
(Latest Discussion - Issued 0336Z Dec 09, 2023)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 1035 PM EST Fri Dec 08 2023 Valid 12Z Sat Dec 09 2023 - 12Z Mon Dec 11 2023 ...Excessive Rainfall and Heavy Snow for Pacific Northwest and Northern Rockies this weekend... ...Severe Weather possible from ArkLaTex to Tennessee Valley today; Excessive Rainfall concerns for parts of the Northeast on Sunday... ...Warm air spreads from Midwest to East Coast this weekend; cool air shifts from Rockies to Deep South... A low pressure system will bring heavy rainfall to the Washington/Oregon coast tonight while heavy snow develops over the Olympics and northern Cascades. There's a Slight Risk of Excessive Rainfall leading to Flash Flooding for the aforementioned coastal areas where the greatest risk of high rain rates will occur. Moderate to heavy snow will subsequently spread into the Northern Rockies early Sunday morning. An upper trough will amplify over the Plains and Mississippi Valley and draw a deep column of moisture from the Gulf of Mexico. Scattered showers and thunderstorms will develop along a cold front extending from the Gulf Coast up to the Upper Great Lakes where the surface low pressure center will be moving through. Some thunderstorms may turn severe from the ArkLaTex to the Tennessee Valley today, where a few tornadoes, scattered damaging winds and large hail will be possible. Rain and thunderstorms will spread into the East Coast on Sunday. There's a Slight Risk of Excessive Rainfall leading to Flash Flooding for parts of the coastal Northeast that day. Meanwhile, cool air will descend from the Rockies into the Southern Plains and Mississippi Valley as high pressure builds over much of the West this weekend. Abnormally warm air will spread into the East over the next couple of days out ahead of the approaching cold front. Widespread low temperature records may be tied or broken Sunday night as a result. Very dry conditions with gusty winds will support Elevated Fire Weather Risk over parts of the Southern High Plains and Southern California today. Kebede Graphics available at