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Short Range Public Discussion
(Caution: Version displayed is not the latest version. - Issued 2034Z Jan 21, 2018)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 334 PM EST Sun Jan 21 2018 Valid 00Z Mon Jan 22 2018 - 00Z Wed Jan 24 2018 ...There is a slight risk of severe thunderstorms over parts of Eastern Texas and the Lower Mississippi Valley... ...Heavy snow possible from the Central Plains to the Upper Mississippi Valley and over the Cascades... ...Rain/freezing rain possible from the Central Plains into the Upper Great Lakes and into Northern New England... ...Heavy rain possible over parts of the Pacific Northwest/Northern California and Northern New England Coast... A storm over the Central Plains will lift northeastward to the Great Lakes by Tuesday. The system will produce snow over parts of the Central Rockies that will end overnight Sunday. Snow will also develop over the Central Plains, on Sunday evening, that will expand into Upper Mississippi Valley/Upper Great Lakes by Monday morning continuing into Tuesday morning. The snow will be heavy at times over the Central Plains overnight Sunday and over parts of the Upper Mississippi Valley on Monday into Monday evening. Overnight Monday, the snow will stop over the Central Plains as the snow moves into the Middle Mississippi Valley and Western Ohio Valley. On Monday afternoon into evening, snow will develop over parts of Northern New England continuing into Tuesday. In addition, rain will develop over parts of the Middle Mississippi Valley into the Great Lakes on Sunday evening that will expand into the Ohio Valley/Lower Great Lakes by Monday morning. The rain will expand into Southern New England by Monday evening and into the Northern Mid-Atlantic overnight Monday. In the transition zone between the rain and snow, rain/freezing rain will develop in bands from the Central Plains into the Great Lakes, on Sunday evening into Monday, and into New England overnight Monday into Tuesday. Additionally, showers and thunderstorms will develop over parts of the Southern Plains into the Lower Mississippi Valley on Sunday evening advancing to the Tennessee Valley/Central Gulf Coast by Monday morning. By Monday evening, the showers and thunderstorms will move to parts of the Ohio Valley southward to the Eastern Gulf Coast and to parts of the Mid-Atlantic into the Southeast by Tuesday morning. Meanwhile, upper-level energy will move inland over the Pacific Northwest moving eastward to the Northern Plains by Tuesday. The system will produce rain and higher elevation snow over parts of the Pacific Northwest/Northern California that will move inland to the Northern Intermountain Region/Northern Rockies by Tuesday morning. The area of snow will be reduced in areal coverage overnight Monday into Tuesday due to the lack of moisture. In the wake of the energy, onshore flow will aid in producing rain and higher elevation snow over parts of the Pacific Northwest through late Monday night as the low-level flow become parallel to the coast, likewise, overnight Monday. Ziegenfelder Graphics available at