Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 253 AM EDT Sun Oct 28 2018 Valid 12Z Sun Oct 28 2018 - 12Z Tue Oct 30 2018 ...Rain and isolated thunderstorms shift from the Upper Midwest to the Northeast Sunday into Monday... ...Heavy rainfall possible for the Pacific Northwest... Heavy precipitation associated with the coastal storm across the Northeast has lifted into Canada, with only light and scattered precipitation remaining this morning across parts of the lower Great Lakes and northern New England. Farther west, rain and isolated thunderstorms will continue to move east ahead of a strengthening area of low pressure over the Upper Midwest. This system is expected to move quickly, with rain moving into the Ohio Valley today, and another round of organized rainfall for the northern Mid-Atlantic and the Northeast by Monday. Overnight temperatures Sunday into Monday in some locations may be cold enough to support a changeover from rain to a wintry mix as well, especially for the higher terrain of the interior Northeast. Gusty winds behind the frontal passage has also prompted the issuance of wind advisories across portions of the Midwest today. Out west, persistent onshore flow will continue to bring possible heavy rainfall to the Pacific Northwest, with the best activity expected to focus along the favored terrain. As the frontal system moves inland, rain and mountain snow will also move into the northern Intermountain West and Rockies today and Monday, with some accumulating snowfall possible in the highest elevations. Temperature wise across the country, the cold front moving into the Ohio Valley and the Northeast will keep temperatures below normal the next few days and upper troughing across the Northwest will introduce cooler, more near normal, temperatures in that region. The rest of the country, under the influence of upper level ridging, will be above normal, with afternoon highs as much as 10 to 20 degrees above normal possible from the central Great Basin/Rockies into the Central Plains. A combination of warm temperatures and gusty winds will result in elevated fire weather conditions across the Sierra Front where a handful of red flag warnings are in effect. On Monday, elevated fire weather may also become a concern across portions of Southern California. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php