Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 215 PM EST Mon Jan 27 2020 Valid 00Z Tue Jan 28 2020 - 00Z Thu Jan 30 2020 ...Series of storm systems to cause soaking rainfall and snowy conditions across the Northwest... ...Accumulating snowfall possible in parts of the Central/Southern Plains... ...Lake effect snow and north-central Appalachians snow showers to stick around into Tuesday... The Pacific Northwest into the Northern Rockies will continue to remain active through the first half of the week as Pacific moisture associated with multiple upper-level disturbances and surface fronts push through the region. Coastal regions and valleys can expect mostly rain, with a couple of inches of rain possible through Wednesday. The higher elevations of the Cascades should see snowfall amounts over a foot, while the Northern Rockies and into the Tetons may see snow approaching a foot in the highest terrain. A low pressure system developing across the Southern Plains this afternoon will bring widespread showers and a few thunderstorms to much of Texas and parts of Oklahoma into Tuesday, with a wintry mix of snow and sleet/freezing rain possible across the northern edge of the precipitation shield extending into the Central Plains. Freezing rain amounts should generally be light, though snowfall accumulations of 2 to 6 inches, locally higher amounts, are possible across the Oklahoma and north Texas Panhandles, into western Kansas. This system tracks into the Lower Mississippi Valley and Gulf Coast by Tuesday night, spreading rain (south) and wintry precip (north) eastward into the Deep South. Temperatures behind the system will trend much cooler, with parts of Oklahoma into Kansas seeing daytime highs 10 to 15+ degrees below normal on Thursday. Elsewhere, favorable north-northwesterly flow across the still relatively warm lakes will generate lake effect snow showers downwind of particularly Lakes Erie and Ontario through Tuesday, with a few inches of snow accumulation possible. Lingering snow showers are also possible over parts of the north-central Appalachians this evening. In the northern Plains, warm air advecting into the region should bring daytime highs 5 to 10 degrees above normal. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php