Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 351 AM EDT Mon Mar 21 2016 Valid 12Z Mon Mar 21 2016 - 12Z Wed Mar 23 2016 ...Heavy rain possible over parts of the Pacific Northwest and Northern California... ...Heavy snow possible along the Northeast Coast... Snow will continue for today for coastal areas spanning from Massachusetts to eastern Maine as a low pressure system tracks northeastward over the Atlantic Ocean. Snow will taper off by late tonight/early Tuesday morning as the central low pressure reaches the Canadian Maritimes. Accumulations of 1 to 3 inches is forecast along the coast, with 4 to 10 inches possible for extreme eastern Maine. Meanwhile, a front over northern Intermountain West/Great Basin regions will progress eastward in the Central and Northern Plains by this evening. Light snow is forecast for the higher elevations today. Snow will increase in intensity, as well as, expand to lower elevations and areas east of the front range. Central Wyoming could have accumulations reaching or exceeding 1 foot by Wednesday morning. A cold front pushing south from Canada into the High Plains/Upper Midwest will link up with the boundary moving out of the Rockies by Tuesday morning. Light snow will develop across the Upper Mississippi Valley and Great Lakes. This front will stretch from the Central Plains to the Northeast by Thursday morning. Snow will develop from Nebraska to Maine along this boundary. Snow accumulations of 1 to 4 inches is expected, with 4 to 8 inches forecast from northern Iowa to western Michigan and upstate New York. The Pacific Northwest will have rain and mountain snow through Wednesday morning as multiple system trek through from the Pacific. Coastal areas are forecast to have 3-day totals of 1 to 3 inches, with isolated areas of 4+ inches in northern California. As the front pushes further inland, snow levels will lower by Tuesday morning for the ranges in the Northwest and northern California. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php