Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 336 PM EDT Mon Apr 04 2016 Valid 00Z Tue Apr 05 2016 - 00Z Thu Apr 07 2016 ...Rain and snow expected for portions of the Mid-Atlantic and Northeast through Tuesday morning... ...Another round of wintry precipitation expected for portions of the Upper Midwest and Upper Great Lakes on Tuesday and Wednesday... ...Warm and dry conditions expected to continue for the southwestern U.S... Scattered to widespread rain and snow showers will continue from the central Appalachians to southern Maine through Tuesday morning as a low pressure system and associated cold front pushes east into the Atlantic Ocean late tonight. Snowfall accumulations of 2 to 6 inches are possible across southern New England/norther Mid-Atlantic. Precipitation will diminish by Tuesday afternoon along the East Coast. A low pressure system will cross the Rockies and pass through the Central and Northern Plains on Tuesday, reaching the lower Great Lakes and Ohio/Tennessee Valley by Wednesday evening. A wintry mix of precipitation is forecast for much of the Northern Plains and Upper Midwest as the system moves through. Precipitation will fall mostly as snow by late Tuesday/early Wednesday for the Great Lakes region. Farther south, showers and thunderstorms are forecast to develop on Tuesday from the Central Plains to portions of the Middle/Upper Mississippi valley. A vast portion of the Southwest U.S. will will have high pressure in place over the next few days. A cold front will pass through the region on Tuesday, but due to a lack of moisture, no precipitation is expected to occur. This region will remain dry with above average temperatures through midweek. Afternoon temperatures on Tuesday are forecast to be 10 to 15 degrees above average. Many locations in California may approach 20 degrees above average on Tuesday. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php