919 FXUS01 KWBC 272007 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 PM EST Fri Feb 27 2026 Valid 00Z Sat Feb 28 2026 - 00Z Mon Mar 02 2026 ...Record warmth across the Southwest including Los Angeles as arctic air surges across the norther tier states... ...Light snow will move quickly across the northern tier states before wintry precipitation develops over the central Plains on Sunday... ...Showers and thunderstorms will move off the Southeast U.S. coast tonight but they will linger into the weekend for the Sunshine State... The weather pattern across the U.S. will support a large contrast in temperatures across the U.S. as a warm ridge of high pressure will keep well above normal temperatures in the Southwest while an outbreak of arctic air will surge across the northern tier states. In fact, record breaking temperatures topping near 100 degrees are forecast near the southern border of the Desert Southwest Saturday afternoon under the ridge, including high temperatures well up into the 80s for Los Angeles. Temperatures will begin to moderate on Sunday but they will remain at record high levels Sunday afternoon across the Southwest. Meanwhile, an outbreak of arctic air currently reaching into the northern Plains will surge east across the northern tier states while spreading farther south into the central Plains over the weekend. A swath of light to locally moderate snow will move quickly across the northern tier states from west to east through the next couple of days reaching New England on Sunday well behind the arctic front. By Sunday afternoon, wintry precipitation is forecast to emerge over the central Plains as an upper-level shortwave ejecting out of the central Rockies begins to interact with the arctic front. Meanwhile, rain is forecast farther south across the south-central Plains. Across the Southeast, a frontal system with multiple low pressure waves will gradually slide east into the Atlantic tonight. Showers and thunderstorms behind the system will be moving off the Southeast U.S. into the Atlantic but the trailing portion of the front will take additional time to move through the Florida peninsula, keeping the chance of showers and thunderstorms into the weekend for this portion of the Sunshine State. For the West Coast, an upper-level trough moving onshore will produce scattered rain and rain showers from northern California to the Great Basin during the weekend. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$