Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 411 PM EDT Mon Mar 16 2015 Valid 00Z Tue Mar 17 2015 - 00Z Thu Mar 19 2015 ...Heavy rain possible for parts of Southern Texas... ...Snow for parts of Northern New England... ...Temperatures will be 10 to 15 degrees above average for the Southern Mid-Atlantic/Southeast... A front extending from the Great Lakes to the Great Basin will move southeastward to off the Northeast/Mid-Atlantic Coast by Tuesday evening. The boundary will move southward to just off the Gulf Coast by Wednesday. The system will produce rain over parts of the Great Lakes and move to the Central Appalachians/Northern Mid-Atlantic by Tuesday morning. Snow will also develop over parts of the Upper Great Lakes and move to Northern New England by Tuesday morning, too. The snow will linger over parts of Maine through Wednesday morning. Meanwhile, upper-level energy over the Pacific Northwest will aid in producing rain and highest elevation snow over parts of the Pacific Northwest eastward to the Northern Rockies through Tuesday morning. Additional upper-level energy will move into the Northwest on Tuesday and move inland to the Northern Rockies by Wednesday. The energy will produce rain over parts of the Pacific Northwest Coast Tuesday evening into Wednesday. Wide spread rain will develop over parts of the Northern Intermountain Region/Northern Rockies by Tuesday evening. In addition, snow will develop over parts of the Northern High Plains into parts of the Upper Mississippi Valley by Wednesday. An upper-level closed low over Mexico will move to Texas by Wednesday. The energy will pull moisture northward from the Gulf of Mexico as a wave of low pressure develops over Texas on Tuesday evening into Wednesday. Showers and thunderstorms will develop over pats of the Southern Plains on Tuesday evening, expanding into parts of the Lower Mississippi Valley by Wednesday. Rain will also develop over parts of the Middle/Lower Mississippi Valley by Wednesday morning, too. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php