Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 256 PM EST Sat Nov 17 2018 Valid 00Z Sun Nov 18 2018 - 00Z Tue Nov 20 2018 ...Light snow possible across parts of the central Plains and middle Mississippi Valley, shifting to the Great Lakes by Sunday... ...Light to moderate rain in South Texas may lead to localized flooding... ...Red flag warning in central California in effect today with elevated fire weather risks extended into Sunday... ...Air Stagnation and Air Quality Alerts continue to be in effect for parts of the Pacific Northwest and California... The ongoing snow in the central Rockies eastward into the middle Mississippi Valley/Ohio Valley will begin to taper off tonight. As the surface front progresses eastward, high pressure will fill in across the Rockies, Plains and Upper Midwest. Light snow could linger across the lower Great lakes and Ohio Valley on Sunday. By Monday, as the front continues to push eastward toward the Mid-Atlantic and Northeast, showers with snow in the higher elevations could be possible. Farther south, deep southerly flow combined with the incoming cold front in South Texas will bring showers and thunderstorms across that region. Some of this activity could lead to localized flooding. A strong cold front will begin to drop southward across the Great Lakes on Sunday, bringing snow across the Upper Great Lakes on Sunday night and into Monday. A red flag warning is in effect for the Sacramento area where infamous the Camp Fire is located. Low relative humidities and gusty winds will contribute to the fire weather conditions. Elevated fire weather risk will also continue into Sunday for the Camp Fire/Sacramento area in addition to southern California. As the wildfires continue to burn across California, air quality alerts will persist until the fires are extinguished. Farther north in the Pacific Northwest, air stagnation alerts will continue through midweek. The high pressure sitting over the western U.S. will also give way to above normal temperatures across the western U.S. Meanwhile, the Arctic high will lead to temperatures nearly 25 degrees below normal throughout the Plains. Temperatures across the Ohio Valley and the East Coast will experience temperatures 5-10 degrees below normal. Reinhart Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php