Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 248 AM EST Tue Dec 02 2014 Valid 12Z Tue Dec 02 2014 - 12Z Thu Dec 04 2014 ...Wintry mix of precipitation possible across the Central Appalachians and into New England... ...Heavy rain possible over parts of California... A quasi-stationary front extending from the Mid-Atlantic to along the Gulf Coast to the Rockies then westward across the Northern Rockies to the Pacific Northwest will have a wave of low pressure over the Tennessee Valley that will move northeastward to Southern New England Coast by Wednesday morning. Rain will develop over parts of the Tennessee Valley and extend to the Mid-Atlantic on Tuesday morning with Pockets of rain/freezing rain over parts of the Mid-Atlantic/Central Appalachians that will expand northward into the Northeast by Tuesday evening. The rain will move off the Northeast/Mid-Atlantic Coast by Wednesday afternoon. Snow will also develop over parts of the Northeast through Wednesday evening. In addition, pockets of rain/freezing rain will develop near the rain/snow line over parts of the Northeast through to Wednesday. Meanwhile, a weakening upper-level low off the California Coast will slowly weaken as associated upper-level energy moves inland over California. Moisture from the Pacific will move onshore over California that will produce light to moderate rain over parts of the state through Wednesday. Light rain and higher elevation snow will develop over parts of the Great Basin into the Central Rockies on Wednesday. Elsewhere, northerly flow off the Gulf of Mexico and a near by front will aid in producing rain over parts of the Lower Rio Grande Valley on Tuesday. Additionally, easterly flow off the Atlantic will aid in producing rain along parts of the east Coast of Florida through Wednesday. Also, energy moving over the Great Lakes will produce scattered light snow over parts of the Upper Great Lakes. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php