Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 256 PM EDT Tue Sep 09 2025 Valid 00Z Wed Sep 10 2025 - 00Z Fri Sep 12 2025 ...Risk of widely scattered strong to severe thunderstorms across portions of the central and southern High Plains through this evening... ...A Strong Pacific storm will bring unsettled weather to much of the Western U.S. the next few days... ...Stalled frontal boundary draped across Florida to produce rounds of showers and thunderstorms through the end of the week... Increasing upslope moisture combined with an upper-level disturbance will result in the development of widely scattered showers and thunderstorms across parts of the central and southern High Plains through this evening. A few of the storms may become strong to severe, especially across parts of eastern Colorado and western Kansas where a Slight Risk issued by the Storm Prediction Center resides. The main concern from any strong to severe storms would be large hail and damaging winds. Meanwhile to the west, a strong upper-level Pacific storm system will slowly spin inland across the Intermountain West, bringing cooler temperatures and unsettled weather to a large portion of the region the next few days. With the exception of the Desert Southwest where the weather pattern stays mainly dry, the remainder of the Western U.S. will see daily rounds of scattered showers and thunderstorms through at least mid to late week. For parts of the Pacific Northwest, enhanced moisture with these showers and storms may even lead to a flash flood risk, especially for more flood sensitive areas like steep terrain, burn scars, etc. A stalled frontal boundary draped over the Florida Peninsula will be the focus for daily rounds of showers and thunderstorms through the end of the week. With plenty of moisture in place, any clusters of showers and storms that are slower-moving or repeatedly track over the same areas can lead to localized flash flooding. The stalled boundary also connects to a weak surface low in the Atlantic east of the southern Mid-Atlantic states. As it slowly drifts northward parallel to the Eastern Seaboard, this area of low pressure may near the coast just enough to spread showers just inland from the Carolinas to southern New England on Wednesday. Temperatures the next few days will largely remain near to below September averages across the East with Canadian high pressure in control. The strong and slow-moving Pacific storm will also keep temperatures increasingly cooler than normal across an expanding portion of the West. Meanwhile, strengthening upper-level ridging across the Central U.S. will promote much warmer than average temperatures, with highs well into the 80s and 90s by Thursday. Miller Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php