Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 PM EDT Sun Apr 26 2020 Valid 00Z Mon Apr 27 2020 - 00Z Wed Apr 29 2020 ...Heavy snow for parts of the mountains of New York and New England, a cool valley and coastal rain across the rest of the Northeast and Mid-Atlantic... ...Record heat possible in parts of the Southwest... ...A new storm system to generate unsettled weather across the central U.S. Tuesday, reaching eastern regions by Wednesday... A large storm system will continue to cause damp, dreary, and gusty conditions across much of the Northeast and eastern Ohio Valley this evening. The storm will be in no rush to leave as it meanders off the Northeast coast on Monday and keeping spotty showers around for one more day across the region. Cold high pressure to the north is also working to spill cooler temperatures into New England and into the Mid-Atlantic. Daily record cool max temps could be set in parts of the Northeast on Monday. Snow is also on tap in the northern New England where Winter Weather Advisories are in effect through Monday morning. Some locations could pick up as much as six inches or more of snow by the time the storm finally departs by early Tuesday. Meanwhile, sizzling temperatures continue in the Desert Southwest and show no signs of backing down through the first half of the week. Forecast highs in the Desert Southwest each day this weekend should at the very least be in the 80s while some spots surpass the century mark and/or challenge daily record high temps. Excessive Heat Warnings remain in effect for the Phoenix metro area and portions of the far Lower Colorado River Valley through Monday. Northern and central New Mexico remain at risk for elevated fire weather conditions this afternoon and into Monday. While parts of the Plains cool down some on Tuesday, the dome of hot high pressure in the Southwest should amplify over California and the Great Basin, resulting in abnormally hot temperatures to stick around in these areas into the middle of the week. As one storm system finally heads out to sea off the East Coast, a new area of low pressure sending precipitation into the Pacific Northwest tonight and Monday will enter the Northern Plains on Tuesday. The storm is forecast to intensify late Tuesday because of a strengthening upper level trough diving south through the Midwest. The storm system's cold front will sweep across the Plains Tuesday and into the Mississippi Valley Tuesday night with the potential for severe weather to develop. The Storm Prediction Center issued a Slight Risk for severe weather and the Weather Prediction Center has a Marginal Risk for excessive rainfall in portions of the Southern Plains and Lower Mississippi Valley Tuesday. The threat for showers and thunderstorms are forecast to reach the East Coast states by Wednesday. Mullinax Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php