Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 255 PM EST Sun Feb 19 2017 Valid 00Z Mon Feb 20 2017 - 00Z Wed Feb 22 2017 ...Heavy snow possible for the Cascades, Sierras, Sawtooths, the Mogollon Rim and Central Rockies... ...Strong thunderstorms and heavy rain possible over eastern Texas and lower Mississippi valley... ...Heavy rain possible for portions of northern and central California... Surface low and associated front will spin up near the Southeast Coast today as an upper-level low propagates eastward -- resulting in showers and a few thunderstorms for Florida and the Southeast Coast. Rain will also develop over parts of the Southern Ohio and Tennessee valleys along with parts of the Central/Southern Appalachian this morning and will move into parts of the Mid-Atlantic/Central Appalachians this afternoon before dissipating. The system that brought widespread heavy precipitation to California and portions of the Southwest will continue to weaken as it tracks eastward into the Central/Southern High Plains today and into Monday. Rain and higher elevation snow is forecast for parts of California, the Great Basin and Southwest ending over most of California this morning and will expand into the Central/Southern Plains, waning by Monday. Farther north, multiple waves embedded within the upper-level low will move into the Northwest and Intermountain West/Northern Rockies early and will aid in producing rain and higher elevation snow from the Coast into parts of the Northern Rockies. Heavy snow will be possible for some of the higher elevations of the Cascades, Sierras, Sawtooths, the Mogollon Rim and Central Rockies. A plume of moisture will stream into California bringing another round of heavy rainfall to portions of central California. Rain and higher elevation snow will develop over parts of Central/Southern California. As the upper-level low moves eastward, circulation around the low will aid in streaming moisture into Eastern Texas that will move northward to the Middle Mississippi Valley by Monday. Showers and thunderstorms will begin to develop over parts of the Western Gulf Coast and will expand northward into the central U.S. this afternoon. Some of the storms over eastern Texas may become severe this afternoon. Refer to the Storm Prediction Center webpage for addition information on the threat for severe weather. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php