Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 319 PM EST Thu Mar 10 2016 Valid 00Z Fri Mar 11 2016 - 00Z Sun Mar 13 2016 ...Heavy rain possible for the Lower Mississippi Valley and Central Gulf Coast... ...Heavy rain possible for Central/Northern California... ...Heavy rain possible parts of the Olympic Peninsula... ...Temperatures will be 15 to 30 degrees above average for the Upper Midwest... A quasi-stationary front extending from the Northeast southwestward to the Western Gulf Coast will slowly sink southward to the Carolinas to the Lower Mississippi Valley/Southern Plains by Saturday. Showers and thunderstorms will develop over parts of the Southern Plains to the Lower Mississippi Valley and parts of the Tennessee Valley that will expand into parts of the Southeast/Southern Appalachians on Friday. In addition, the showers and thunderstorms will lift into parts of the Middle Mississippi Valley and the northern Southern Plains/Central Plains by Saturday. Additionally, the showers and thunderstorms will continue over the Lower Mississippi Valley into parts of the Southern Ohio Valley/Southern Appalachians into the Carolinas on Friday night into Saturday. Rain will also develop along the front from the Northeast to the Western Ohio Valley/Middle Mississippi Valley that will slowly move off the Northeast/Mid-Atlantic Coast by Friday afternoon. Meanwhile, multiple fronts over the Western U. S. and new fronts moving onshore will move inland to the Rockies while another front moves onshore over the Pacific Northwest Coast by Saturday. Moisture associated with the boundaries will aid in producing rain and snow at the highest elevations from the Pacific Northwest to the Northern Rockies and southward to Northern California through Friday evening. Overnight Friday into Saturday the snow levels will lower over the West where snow will develop at the higher elevations. Furthermore, rain and higher elevation snow will move into Southern California on Friday afternoon expanding into parts of the Great Basin Friday night into Saturday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php