Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 320 AM EST Thu Mar 03 2016 Valid 12Z Thu Mar 03 2016 - 12Z Sat Mar 05 2016 ...Heavy rain over parts of the Olympic Peninsula and Sierras... ...Snow for parts of the Upper Great Lakes southeastward to the Mid-Atlantic Coast... ...Temperatures will be 15 to 25 degrees below average over Northern New England... Low pressure over the Lower Mississippi Valley will move eastward to the Southeast Coast by late Thursday night then move northeastward to the North Carolina Coast by Friday morning. The system will then move more eastward off the coast out over the Western Atlantic by Friday evening. Showers and thunderstorms will develop over parts of the Lower Mississippi Valley on Thursday morning eastward to off the Southeast Coast by Friday morning. Likewise, rain will develop over parts of the Middle Mississippi Valley moving and expanding into parts of the Ohio Valley and the Southern Mid-Atlantic Coast by Thursday evening. The rain will begin to move off the Southern Mid-Atlantic and Carolina Coast by Friday morning and out to sea by Friday afternoon. Additionally, snow will develop over parts of the parts of the Western Ohio Valley/Middle Mississippi Valley by Thursday morning. The snow will move into parts of the Great Lakes, Ohio Valley, Central Appalachians, and Mid-Atlantic by Thursday evening. By Friday morning, the snow will move out of the Ohio Valley while continuing over the Mid-Atlantic/Central Appalachians. Similarly, the snow will move off the Mid-Atlantic Coast by Friday evening while lingering over Southern New England Coast. Meanwhile, a front over the Pacific Northwest/Northern California will move eastward to Upper Mississippi Valley/Southern Plains by Friday evening. The system will produce rain from the Pacific Northwest to parts of Central California on Thursday morning that will move eastward to parts of the Northern Intermountain Region/Northern Rockies producing snow at the highest elevations by Thursday evening. The rain will end over most of the Northwest overnight Thursday while producing rain and snow over parts of the Northern Plains by Friday morning. Snow and a small area of rain will move into the Upper Mississippi Valley/Upper Great Lakes by Friday evening. In addition, moisture ahead of the next Pacific system will aid in producing rain over parts of the Pacific Northwest Coast and into Northern California on Friday afternoon into Friday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php