Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 302 PM EST Mon Feb 17 2014 Valid 00Z Tue Feb 18 2014 - 00Z Thu Feb 20 2014 ...Heavy snow for the Cascades... ...Temperatures will be 10 to near 15 degrees above average over parts of the Southern High Plains/Central Plains... A storm over the Upper Great Lakes/Western Ohio Valley will move to the Lower Great Lake by Tuesday morning. Low along the Mid-Atlantic Coast will become dominate over the Gulf of Maine by Tuesday evening, then move northeastward into the Canadian Maritimes by Friday morning. Light to moderate snow will develop over the Great Lakes Monday evening and expand into parts of the Northeast by Tuesday morning. A small area of rain/freezing rain will develop over parts of the Ohio Valley on Monday evening. In addition, light to moderate rain will develop over the Tennessee Valley and move to the Mid-Atlantic Coast by Tuesday, while intensifying to moderate to heavy rain. Furthermore, heavy snow will develop over parts of Northern New England by Tuesday evening moving into Southeastern Canada by Wednesday. Meanwhile, a front over the Northern Rockies will move eastward to the Appalachians by Wednesday. The system will produce light snow over parts of the Great Lakes on Wednesday and rain over parts of the Central Appalachians into parts of the Mid-Atlantic. Showers and thunderstorms will develop over parts of the Central Gulf Coast Monday evening into Wednesday. Elsewhere, onshore flow will produce rain and higher elevation snow over the Pacific Northwest and snow inland over parts of the Northern Rockies through Wednesday. A front will move onshore on Tuesday and move inland to the Northern High Plains/Great Basin by Wednesday. When the boundary comes onshore, the rain will intensify to moderate to heavy on Tuesday and the snow will also become heavy. Snow will develop over parts of the Northern High Plains/Great Basin on Wednesday morning too. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php