994 FXUS01 KWBC 101838 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 237 PM EDT Sat Oct 10 2026 Valid 00Z Sun Oct 11 2026 - 00Z Tue Oct 13 2026 ...Post Tropical Isaias will bring widespread rainfall across the Eastern states... ...Moisture from Tropical Storm Rachel will bring heavy rain and flash flooding to the southwestern U.S. through Monday... ...First winter storm of the season forecast for the Northern Rockies this weekend... An active weather pattern will be in place across the Continental U.S. through the remainder of the weekend and into Monday. What is now Post Tropical Isaias is currently tracking north across Alabama, and is bringing widespread rainfall from the Mississippi River eastward to the central Appalachians and the southeast coast, with drier conditions returning to the central Gulf Coast region after torrential rain and high winds. The heaviest rainfall over the next two days is expected to be across the southern and central Appalachians, particularly on southeast facing terrain where orographic ascent will be enhanced with the potential for 2-4 inch rainfall totals with isolated higher amounts possible that may result in some flooding, along with high winds across the higher ridges. A secondary maxima of heavy rain is also expected near coastal North Carolina. Heavy rainfall and flash flooding will also make weather headlines across the western U.S. as the future remnants of what is now Tropical Storm Rachel move inland across the Desert Southwest. A Moderate Risk of excessive rainfall is valid from southern California to southern Utah where an enhanced corridor of heavier rainfall is expected to develop. The potential exists for rainfall totals to exceed three inches across the higher terrain of the Peninsular Ranges and into southeastern Nevada and the southern Wasatch Range, and generally 1-2 inches for the lower elevations. This could easily result in some instances of flash flooding. Farther to the north across Montana, it will be much colder north of the frontal boundary, and the incoming moisture should mainly be in the form of snow across the higher terrain of central and western Montana, with some areas possibly getting over a foot of snowfall through Monday afternoon. Snow levels will be much higher across Idaho and Wyoming, limiting snowfall to the highest terrain. A temperature dichotomy will exist across the country through Sunday and into Monday. Conditions will remain well above average over much of the central U.S. with widespread highs into the 80s and even lower 90s for the northern/central Plains into the Upper Midwest and 90s for the southern Plains. There will likely be some new daily record highs established as a result. The cold front in the West will bring much colder temperatures in the 40s to portions of the northern High Plains Sunday. For the East, highs will vary around average with relatively cooler temperatures in vicinity of the widespread clouds and rain associated with the remnants of Isaias. Forecast highs are generally in the 70s for the Southeast with 60s for the Northeast. Hamrick Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$