Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 316 PM EDT Tue Sep 30 2025 Valid 00Z Wed Oct 01 2025 - 00Z Fri Oct 03 2025 ...Showers and thunderstorms subsiding across much of the Southeast; unsettled weather continues across the Great Basin and Pacific Northwest... ...Unseasonably hot temperatures continue for much of the Plains and Midwest through the remainder of the week... After a rainy start to the work week, much of the Southeast and Lower Mid-Atlantic will begin to see improving conditions as Imelda turns to the northeast tonight, leaving calm high pressure and fall-like weather in its wake. The one exception to this drying trend will fall over eastern Florida, where moist onshore flow will lead to repeated rounds of showers and thunderstorms through this weekend. The repeating nature of this activity could lead to isolated flash flooding concerns heading into the latter part of the week. The prolonged onshore flow coupled with the increased wave action generated by both Imelda and Humberto will also lead to swells, high surf, and dangerous rip currents along much of the East Coast the next several days. Out west, a stretch of unsettled and unseasonably cool weather is in store for parts of the Pacific Northwest, Great Basin, and Intermountain West the next few days as a series of Pacific fronts push inland. These moisture-laden fronts will bring periodic waves of showers and thunderstorms, some of which could contain bursts of heavy rainfall. While the overall threat is low, localized flash flooding concerns still can't be ruled out across parts of the Great Basin, northern Rockies, and the Olympic Peninsula. The increased presence of clouds and precipitation associated with the passing fronts and persistent upper-level troughing will result in high temperatures roughly 5 to 15 degrees below seasonal averages across much of the western U.S. through mid to late week. Downstream of the deep upper-level troughing along the west coasts of the U.S. and Canada is a highly amplified upper-level ridge located over the heart of North America. This ridge of high pressure has been responsible for the unseasonably hot weather across a large portion of the country east of the Rockies the last few days. With the ridge forecast to go nowhere anytime soon, this summer-like heat will continue through at least the end of the week. This will especially be the case from the northern/central Plains to the Upper Midwest, where high temperatures will soar well into the mid/upper 80s and low 90s. These temperatures are roughly 15 and 25 degrees above normal, making for a toasty end of September and start to October. A few daily high temperature records could fall this weekend as a result. Asherman/Miller Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php