Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Tue Jun 23 2020 Valid 00Z Wed Jun 24 2020 - 00Z Fri Jun 26 2020 ...Flash flooding possible over the Appalachians through tonight and southeastern Texas into Louisiana through Wednesday... ...A Slight Risk of severe weather is in place over the Southern High Plains through tonight... ...Hot temperatures Tuesday across the West and Northeast should moderate some Wednesday, but remain warm... An upper-level trough extending from the Midwest/Great Lakes back into Texas will urge a cold front southward and eastward over time, acting as a focus for thunderstorms. Locally heavy rain is possible through this evening for the Eastern Seaboard, and areas of the Appalachians and Mid-Atlantic could see flash flooding in areas that are sensitive. The highest rainfall totals through Wednesday are expected over southeastern Texas and southern parts of Louisiana, where 2 to 4 inches of rain should be widespread. Slight Risks of flash flooding are forecast for these areas today and Wednesday. Meanwhile, the best chance for severe weather is in place over the Southern High Plains today, where a Slight Risk of severe weather is delineated by the Storm Prediction Center for high wind and hail threats. Scattered thunderstorms remain possible in the Southeast through Thursday morning, but widespread severe weather is not expected. In the West, an upper-level disturbance should approach and push a cold front into the Pacific Northwest and eventually into the Northern Plains and Great Basin by Thursday morning. This will lead to increasing rain and thunderstorm chances in the Great Basin and Northern Rockies Wednesday and into the Northern and Central Plains on Thursday. Temperature-wise, this should be the last day for the Northeast to see record-breaking maximum temperatures, though morning lows on Wednesday could set record high minima before the cold front comes through later Wednesday. California is expected to remain warm over the next few days, though record highs do not look to be threatened, but Heat Advisories are in place from southwestern Oregon into the central valleys of California. High temperatures 5 to 15 degrees above normal are forecast across the Great Basin into the Northern High Plains Wednesday, but should shift into the Northern/Central Plains Thursday ahead of the cold front. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php