Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Sun Apr 28 2024 Valid 00Z Mon Apr 29 2024 - 00Z Wed May 01 2024 ...More rounds of excessive rainfall and severe weather expected to push east and southeast toward the Lower Mississippi Valley through tonight into Monday... ...High-elevation snow is forecast to overspread the Pacific Northwest into the Northern Rockies Monday and Tuesday... ...Warmer than average temperatures spread from Midwest to Mid-Atlantic; colder weather returns to the Northern Plains and the Pacific Northwest with warming trend across the central/southern High Plains... More active and unsettled weather is forecast to continue across the mid-section of the country through the next couple of days as multiple disturbances embedded within a slow-moving upper-level trough traverse the western U.S. toward the Great Plains. The low pressure system responsible for the latest outbreak of strong to severe thunderstorms across the central to southern Plains today will continue to track northeast across the upper Midwest on Monday. Another bout of strong to severe thunderstorms can be expected to impact areas farther east across the ArkLaTex region through tonight as the trailing cold front associated with the low pressure system edges farther to the east. In addition, heavy downpours associated with these storms will result in flooding concerns across the region. By Monday, the highest threat of severe weather and heavy rain will shift farther southeast toward the central Gulf Coast region, mainly over Louisiana, as the front begins to weaken. A lower risk of severe weather and heavy rain will extend farther northeast into the Tennessee Valley on Monday. Meanwhile, widespread cold rain is expected to continue through tonight across the northern Plains, upper Midwest and toward the lower Great Lakes ahead of the low pressure system and the associated warm front, with embedded thunderstorms closer to the center of the low. Temperatures could be cold enough to support wet snow Monday morning across portions of the northern Plains into the upper Midwest. The rain will then shift eastward into the western portion of New England, down across the Ohio Valley toward the Appalachians on Tuesday as the low center moves into southern Canada. On the warm side of the low pressure system, strong southerly flow will bring very warm air northward into the East Coast through the next couple of days with high temperatures climbing well into the 80s and possibly into the lower 90 degrees for the interior Mid-Atlantic. These temperatures will be in contrast to the cool temperatures expected for the Pacific Northwest by Monday as the next upper-level trough from the Pacific is forecast to push inland. This trough will bring widespread high-elevation snow and lower elevation rain across the Pacific Northwest toward the northern Rockies on Monday with increasingly windy conditions as a low pressure system begins to develop over the northern High Plains into southern Canada. By Tuesday, the main front will move fairly quickly across the northern and central Plains, with rapid development of showers and thunderstorms expected across the upper Midwest in the afternoon ahead of a warm front and a low pressure wave. Some thunderstorms may begin to erput across the central Plains into Texas east of a dry line. Farther west, warm downslope winds from the southern Rockies will set a warming trend across the southern High Plains with high temperatures reaching into the 80s and lower 90s by Tuesday afternoon. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php