Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 245 AM EDT Mon Apr 04 2016 Valid 12Z Mon Apr 04 2016 - 12Z Wed Apr 06 2016 ...Rain and snow expected for portions of the Mid-Atlantic and Northeast today... ...Another round of wintry precipitation expected for portions of the Upper Midwest and Upper Great Lakes on Tuesday... ...Warm and dry conditions expected to continue for the southwestern U.S... A low pressure system will move across the northern Mid-Atlantic region today, bringing rain to portions of the Mid-Atlantic with snow for portions of the Northeast. Snowfall accumulations of 2 to 6 inches are possible across southern New England. The system will move offshore tonight, bringing an end to rain and snow along the East Coast. Rain and snow are expected from the Pacific Northwest to the northern Intermountain West today as a cold front passes the region. Warm conditions will allow rain to fall initially ahead of the cold front across the Intermountain West, and a few thunderstorms are even possible. As the cold front passes, snow levels will decrease by late this afternoon, and rain will gradually change to snow for many locations by tonight. This system will move into the central/northern plains tonight, with precipitation reaching the Upper Midwest by Tuesday morning. Wintry precipitation will fall on Tuesday from portions of the Upper Midwest to the Upper Great Lakes, including snow as well as some areas of sleet and freezing rain. Farther south, showers and thunderstorms are forecast to develop on Tuesday from the central plains to portions of the Middle/Upper Mississippi valley. The southwestern U.S. will remain dry with above average temperatures through the next couple days. A cold front will pass through the region on Tuesday, but will produce no precipitation due to a lack of moisture. High temperatures on Monday and Tuesday will be to 10 to 15 degrees above average across the Southwest. Areas of California may approach 20 degrees above average on Tuesday. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php