Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 406 AM EDT Wed May 26 2021 Valid 12Z Wed May 26 2021 - 12Z Fri May 28 2021 ...Showers and thunderstorms ahead of a cold front could become severe later today over the Northeast ... ...Heat is expected today along the East Coast before cooler air returns to the Northeast on Thursday... ...Wet snow this morning in the northern Rockies will be followed by strong to severe thunderstorms expanding across the north-central Plains toward the Ohio Valley... A deep low pressure system over eastern Canada will push a cold front across the Great Lakes today. Heat is expected to build along the East Coast ahead of the cold front today as high temperatures are forecast to reach into the 80s and 90s. The heat will also help trigger showers and thunderstorms where the northeastern U.S. will see the highest chance for severe thunderstorms to develop later today. Cooler and drier weather behind the front will then overspread the Great Lakes and the Northeast into Friday morning. Over the northern Rockies, wet snow this morning will gradually taper off today as showers and thunderstorms are expected to develop and expand south and eastward where a low pressure system deepens over the central Plains. The Storm Prediction Center has issued a moderate risk of severe weather for portions of Nebraska and Kansas today near the low track. In addition, heavy downpours from the thunderstorms could result in areas of flash flooding. More strong to severe thunderstorms and heavy rains can be expected to spread across the Midwest and into the Ohio Valley through Friday morning as the low pressure system moves steadily eastward. Meanwhile, precipitation associated with the next Pacific system is forecast to reach the Pacific Northwest early on Thursday. Some wet snow will again be possible in the northern Rockies by Friday morning behind a cold front. The northern Cascades could see wet snow lingering into Friday morning as well. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php