Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 406 PM EDT Sat May 23 2020 Valid 00Z Sun May 24 2020 - 00Z Tue May 26 2020 ...Scattered strong to severe thunderstorms across the Plains will gradually shift southward into the central Plains by Memorial Day... ...Showers, mountain snow, and below-average temperatures for the northern and central Rockies as warm temperatures spread into the Great Lakes... ...Critical fire weather forecast for the Southern High Plains... A well-defined but slow-moving cold front will continue advancing across the Rockies and Plains through the Memorial Day weekend. Moisture inflow and warmer than average temperatures ahead of this front are expected to trigger clusters of thunderstorms throughout much of the Plains. Slight Risks of severe weather and flash flooding are in place over portions of the Plains and into the upper Midwest over the next couple of days. By Monday, the highest threat of heavy rain and thunderstorms is expected to shift farther south into the central Plains as the front pushes southward. Behind the cold front, cooler than average temperatures are expected to spread from the northern and central Rockies toward the central and southern High Plains. Over the higher elevations of Wyoming and Colorado, temperatures will be cold enough to support wet snow especially in the late night and early morning hours. Snowfall amounts could reach a foot near and southeast of Yellowstone National Park, while parts of the Colorado Rockies could see 4 to 8 inches of snow. On the other side of the front, warm temperatures are expected to spread from the upper Midwest into the Great Lakes. Farther south, dry and windy conditions are expected from the Four Corners to the southern High Plains. Downslope winds behind a dry line will lead to a critical fire danger over the southern High Plains, as outlined by the Storm Prediction Center. Kong/Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php