Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 259 PM EST Sat Jan 25 2020 Valid 00Z Sun Jan 26 2020 - 00Z Tue Jan 28 2020 ...Rain and snow for the Great Lakes to Northeast through the weekend... ...Persistent periods of precipitation for the Pacific Northwest... An occluded low pressure system is forecast to move northeastward across the Great Lakes region and Northeast, then into southeastern Canada late Sunday. This will bring continued rain across coastal New England through Saturday night, some of which could be locally heavy. Across the interior Northeast and the Great Lakes, a mix of rain and snow is expected through Sunday evening. Light snow is possible for the Central Appalachians as well. Then on the backside of the low, lake enhancement of snowfall could lead to snow amounts locally over 6 inches downwind of the Lower Great Lakes through Monday. Freezing rain is also a threat for northern Maine, where over a tenth of an inch of ice could accumulate. A series of upper-level disturbances and surface fronts will push through the Northwest over the next couple of days, leading to continued rounds of precipitation there. Lower elevation rain (which could be locally heavy) and higher elevation snow are forecast, with snowfall amounts in the Cascades well over a foot. One frontal system should continue across the Great Basin toward the Rockies Sunday night, spreading snow with it. 6 to 12 inches of snow is forecast for the highest elevations of the Northern Rockies and Wind River Mountains, with light snow into the Intermountain West and Central Rockies through Monday. Elsewhere, the Southern Plains to Lower Mississippi Valley can expect showers and localized thunderstorms through Sunday morning, spreading eastward to the Southeast and Tennessee Valley by Sunday and Monday as a low pressure system moves across the Gulf of Mexico. There is also a possibility of wintry weather in the high elevations of the Southern/Central Appalachians by Monday morning. Temperature-wise, warmer than average conditions can be expected most everywhere, with the largest warm anomalies at 15 to 25 degrees above average for lows across the north-central U.S. to the Northeast. Florida is one exception, where morning lows could be cool Sunday morning, but temperatures rebound by Monday. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php