Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 250 PM EST Sun Nov 11 2018 Valid 00Z Mon Nov 12 2018 - 00Z Wed Nov 14 2018 ...Extremely critical fire weather conditions continue in California... ...Heavy snow possible over the Southern High Plains Sunday evening into Monday and over parts of Northern New England on Tuesday... ...Heavy rain possible from the Lower Mississippi Valley into parts of the Southern Appalachians and Southern Mid-Atlantic... ...Temperatures will be 20 to 30 degrees below average over parts of the Central/Southern Rockies and Central/Southern Plains... Dry ground and dry relative humidities will all combine to prolong dangerous fire weather across California. The Storm Prediction Center has Extremely Critical conditions indicated for parts of Southern California, with Critical conditions across parts of Northern California. Widespread Red Flag Warnings are in effect. Upper-level energy over the Great Lakes will aid in producing snow over the Upper Great Lakes through Monday morning. Additional upper-level energy will move over the Upper Mississippi Valley/Upper Great Lakes on Monday that will aid in producing lake effect snow over parts of the Upper Great Lakes on Monday into Tuesday. In addition, upper-level energy over parts of the Southwest/Southern Rockies will move eastward into the Southern Plains by Tuesday. The energy will aid in producing snow over parts of the Central/Southern Rockies that will expanding into the Central Plains by Sunday evening. The snow will continue to expand into parts of the Southern High Plains by Monday morning. The snow will end west to east over the Southern Plains overnight Monday into Tuesday morning. Furthermore by Tuesday, cold high pressure will settle over parts of the Central Rockies into the Southern High Plains. Elsewhere, snow over parts of the Northern Rockies/Northern High Plains will end by Monday morning. Meanwhile, a front extending from the Great Lakes southwestward to the Southern Plains will move eastward to the Lower Great Lakes to the Southern Appalachians by Tuesday. Moisture moving northward out of the Western Gulf of Mexico will move overrun the boundary aiding in the development of showers and thunderstorms over parts of the Western/Central Gulf Coast that will expand into parts of the Eastern Gulf Coast on Monday into Monday evening. Farther north of the front, rain and snow will develop over parts of the Middle Mississippi Valley by Monday afternoon that will move into parts of the Ohio Valley overnight Monday. A wave of low pressure will develop along the Southeast Coast by Monday evening that will move northward along the coast to the Mid-Atlantic by Tuesday. Overnight Monday, showers and thunderstorms will develop along the Southeast Coast into Tuesday. Rain will also develop over parts of the Ohio Valley/Mid-Atlantic overnight Monday as well. By Tuesday morning, rain will move into Southern New England and the Northern Mid-Atlantic with snow developing over parts of Northern New England. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php