330 FXUS01 KWBC 140752 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 251 AM EST Sun Dec 14 2025 Valid 12Z Sun Dec 14 2025 - 12Z Tue Dec 16 2025 ...Snow wraps up across Northeast/Mid-Atlantic Coast today while Lake Effect snow picks up... ...Heavy rainfall returns to Pacific Northwest... ...Frigid Arctic airmass spreads into Eastern U.S. today... A quick-hitting band of snow should wrap up in the Mid-Atlantic this morning, but linger along the Northeast/southern New England Coast into late this afternoon before finally moving offshore this evening. In its wake, a very cold and dry arctic airmass will move into the Eastern third of the country. Surface high pressure over the Upper/Middle Mississippi Valley will support high temperatures in the single digits. Extreme Cold Warnings are in effect for portions of east-central Illinois into west-central Indiana. Highs in the teens may tie or break numerous records in the Ohio Valley today. Arctic air arrives over the Southeast tonight, with freeze warnings hoisted for portions of southern Georgia and northern Florida. Cold air remains locked in over the East into Monday before temperatures begin to moderate on Tuesday. Cold northwesterly flow over the Great Lakes will generate moderate to heavy snowfall across downwind areas through Monday evening. The Lower Great Lakes may receive 6-12 inches, with isolated higher amounts, by Tuesday morning. Upper ridging in the West will support above average temperatures across the region today before expanding east into the Plains on Monday. Highs will rival existing records for many parts of the West through mid-week. Heavy rain returns to the Pacific Northwest today, beneath a deep upper-level low and waves of surface low pressure systems. The heaviest rainfall will occur on Monday and Tuesday, when a strong occluded system moves through the region. A slight risk of excessive rainfall leading to flash flooding is in effect for western Washington and northwestern Oregon, due in part to sensitivities from the most recent heavy rain event from last week. Some heavy snow may impact the highest elevations of the northern Cascades as well. Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$