Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 336 AM EDT Wed Jun 24 2020 Valid 12Z Wed Jun 24 2020 - 12Z Fri Jun 26 2020 ...Flash flooding possible over southeastern Texas into Louisiana on Wednesday... ...A Slight Risk of severe weather exists in the Northern Plains on Thursday... ...Record high temperatures possible in northern California and Florida on Thursday and Friday... An upper-level trough extending from the Midwest/Great Lakes back into Texas will cease progressing eastward, leading to the stalling of a front stretching from southern and southeast Texas through the Tennessee Valley into the Mid-Atlantic States through Thursday evening, which will act as a focus for thunderstorms. A Slight Risk of flash flooding continues to exist for portions of Southeast Texas and Louisiana due to the heavy rainfall expected. Scattered thunderstorms are expected in the Southeast -- outside of Florida -- over the next few days within a moist, summertime air mass. 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 Thursday into Friday and the Midwest/Great Lakes on Friday. This will lead showers and thunderstorms in the Great Basin and Northern Rockies Wednesday and into the Northern Plains on Thursday -- the Storm Prediction Center targets the Northern Plains for a Slight Risk of severe thunderstorms on Thursday. On Friday, showers and thunderstorm with heavy rainfall shift into the Central Plains and Great Lakes. 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. Removed from active weather systems, California is expected to remain hot over the next few days as a cold front weakens as it splits around the Golden State, with record high temperatures threatened across northern California on Thursday and Friday; heat Advisories remain in place from southwestern Oregon into the central valleys of California. The Florida Peninsula will also be heating up and drying out with decreasing thunderstorm activity, particularly Thursday onward, as the Bermuda High builds and shifts northward; record highs are possible both Thursday and Friday. Heat advisories have recently been hoisted for southwest Florida. This strengthening and shifting of the Bermuda High, climatological for late June/July, will allow the Saharan dust layer underneath of it which has overspread the Caribbean Sea and was approaching the southeastern Bahamas at sunset on Tuesday to progress into the Florida Peninsula and Gulf Coast in the coming days. The main impacts of the Saharan dust are a whitening of the sky during daylight hours, redder sunsets, and decreased air quality. Roth Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php