Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 327 AM EST Mon Mar 03 2014 Valid 12Z Mon Mar 03 2014 - 12Z Wed Mar 05 2014 ...Heavy rain over parts of the Pacific Northwest and Northern California... ...Snow for the Mid-Atlantic/Central Appalachians... ...Temperatures will be 20 to near 40 degrees below average from the Plains to the Mid-Atlantic/Great Lakes and the Tennessee Valley... A strong storm over the Southern Appalachians/Tennessee Valley will move southeastward off the Southeast Coast By Tuesday morning. Strong cold high pressure over the Middle Missouri Valley will move into the Lower Great Lakes as warm moist air from the Western Gulf of Mexico streams northward into the Tennessee Valley. The moisture will be shunted mostly off the Southeast Coast by Tuesday morning, as the associated cold front sinks southeastward. The system will produce snow from parts of the Middle/Lower Mississippi Valley eastward to the Mid-Atlantic that will move southeastward to the Carolinas and Southeastern Virginia by Monday evening. An area of sleet/freezing rain will develop in pockets from parts of the Tennessee Valley into Virginia on Monday morning will likewise move southeastward into the Carolinas and end at the coast by early Tuesday morning. Furthermore, light to moderate rain will develop over parts of the Southeast waning to light rain by Monday evening, moving off the Southeast Coast by Tuesday morning. Showers and thunderstorms will develop over parts of the Central Gulf Coast on Monday morning. Meanwhile, energy over the Southwest will move eastward to the Central/Eastern Gulf Coast by Tuesday evening. The energy will pull moisture from the Western Gulf of Mexico inland over Southern Texas into the Central Gulf Coast Monday evening into Tuesday. The Energy will trigger some showers and thunderstorms over the Southern tip of Texas on Monday morning. The energy will also produce light rain over parts of the Western Gulf Coast from early Tuesday morning expanding eastward to the Central/Eastern Gulf Coast by Tuesday evening. Weak onshore flow and multiple weak impulses will move onshore over the Pacific Northwest/Northern California through Tuesday. Rain and highest elevation snow will develop over parts of the Pacific Northwest and Northern California on Monday, retreating to just over the Pacific Northwest on Tuesday. Farther inland, snow will develop over parts of the Northern/Central Rockies through Tuesday. In addition, energy moving along the U.S./Canadian border will produce an area of snow over parts of the Northern High Plains that will move eastward to the Upper Great Lakes by Tuesday morning. Additional areas of light snow will develop over parts of the Northern Plains/Upper Mississippi Valley on Tuesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php