Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 301 PM EDT Sun Oct 19 2025 Valid 00Z Mon Oct 20 2025 - 00Z Wed Oct 22 2025 ...Strong thunderstorms and locally heavy rain expected to move across much of the eastern U.S. through tonight, then across the Northeast on Monday... ...Windy, colder, and unsettled weather across the Pacific Northwest and northern Rockies shifts into the northern Plains, Upper Midwest, and Great Lakes through midweek... ...Unseasonable October warmth across the southern Plains to start the week with highs climbing well into the 80s and 90s... An increasingly active weather pattern is in progress across the U.S. mainland through the next couple of days with the emergence of La Nina. This active weather pattern will be headlined by a rapidly intensifying low pressure system swiftly moving north of the Great Lakes into southern Canada along with a potent eastward progressing cold front trailing south from the cyclone center to the central Gulf Coast. This strong cold front will continue to sweep across the eastern U.S. through this evening before moving off the East Coast tonight. The relatively fast forward motion of the cold front will help limit the total rainfall amounts; however, a squall line just ahead of the cold front could bring a brief period of strong thunderstorms with heavy downpours along with very gusty winds. By Monday, the most active weather will likely be found across the Northeast, particularly New England, where strong thunderstorms and locally heavy rain could make for an unsettled start to the work week as a new low pressure system begins to develop and moves off to the north and east. In the wake of this system, breezy, cooler, and drier conditions filter into the region late Monday into Monday night before temperatures quickly rebound on Tuesday ahead of the next frontal system. Behind the rapidly intensifying cyclone in the East, strong and gusty northwesterly winds are bringing a colder air mass across the middle part of the country. This cool down will be brief, however, as warmer temperatures are forecast to spread eastward from the High Plains into the Upper Midwest, central U.S., and southern Plains heading into Monday. This warm-up will be in advance of another rapidly developing low pressure system that will sweep across the Pacific Northwest, the northern Plains, the Upper Midwest, and Great Lakes through midweek. This system will keep unsettled weather across the Pacific Northwest with coastal and valley rains along with snow in the higher elevations through tonight. Meanwhile, mountain snow is expected to push farther inland across Idaho and then the northern Rockies tonight into Monday along with gusty winds. The low pressure system will continue to develop while moving quickly across the northern Plains on Monday, bringing a period of rain followed by colder and windy conditions especially across the northern High Plains, Upper Midwest, and Great Lakes Monday into Tuesday. To the south of this system, brisk winds descending the southern Rockies will make for a very warm afternoon across the southern Plains on Monday where highs are forecast to reach well into the 80s and 90s, which is roughly 10 to 20 degrees above normal for mid to late October. These temperatures will also be high enough to challenge some daily records. Dry weather will remain the rule across the Southwest and the Four Corners with a gradual warming trend through midweek. Miller/Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php