803 FXUS01 KWBC 010800 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 AM EDT Thu May 01 2025 Valid 12Z Thu May 01 2025 - 12Z Sat May 03 2025 ...Showers and embedded severe thunderstorms shift east into the Mid-Mississippi, Ohio, and Tennessee Valleys today as rain overspreads the Great Lakes through tonight... ...Potential for strong to severe thunderstorms returns for the southern Plains on Friday... A low pressure system forming along a stalled frontal boundary across the southern Plains will gradually intensify as it tracks northeastward across the Mid-Mississippi Valley and the Midwest today before reaching the Great Lakes tonight. The forward motion of the low pressure system will effectively end the heavy rainfall and severe weather threats across the south-central U.S. for the past couple of days. On the other side of the system however, showers and embedded severe thunderstorms will increase and expand across Mid-Mississippi, Ohio, and Tennessee Valleys today. Damaging winds, hail, and an isolated tornado are the primary concerns from any severe storms. Farther north, rain with embedded thunderstorms will overspread the central and lower Great Lakes today and into this evening as the low approaches. Colder air filtering in behind a secondary cold front may change the rain to wet snow flakes near the Canadian border of Minnesota Friday morning before drier air behind the front gradually tapers off the cold rain across the upper Midwest during the day on Friday. New England will see scattered showers and thuderstorms passing through on Friday behind a warm front as afternoon temperatures soar well into the 70s. The rest of the East Coast will be very warm on Friday with highs well into the 80s along with widely scattered thunderstorms. From Friday night into Saturday morning, a low pressure wave is forecast to develop on the secondary frontal boundary over the east-central U.S. ahead of a deepening upper-level trough. This will allow showers and embedded thunderstorms across the Mid-Mississippi Valley on Friday to expand into the Ohio Valley and Mid-South Friday night, reaching into the southern Appalachians, lower Great Lakes, and interior New England by Saturday morning. Meanwhile, a Pacific frontal system is bringing a round of wet snow and lower-elevation rains and across the Colorado Rockies this morning. Additional disturbances associated with a digging trough will bring scattered rain showers across the northern and central High Plains today. By early Friday morning, the associated cold front will dip south into the southern High Plains and intersect moisture returning from the western Gulf to provide increasing chances of strong to severe thunderstorms extending east through the southern Plains by Friday afternoon. A round of strong to severe thunderstorms is forecast to develop across central Texas by Friday evening into Saturday morning as the front dips further south into Texas. Along the West Coast, chance of rain will gradually increase Friday night into Saturday morning as the next front from the Pacific arrives. Scattered areas of rain will push farther inland by Saturday morning as a low pressure system begins to develop over the Great Basin. Overall, a warming trend is expected for much of the western U.S. before clouds and rain arrive Friday night along the Pacific coast. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$