Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 347 AM EST Tue Nov 03 2015 Valid 12Z Tue Nov 03 2015 - 12Z Thu Nov 05 2015 ...Heavy rain possible across parts of the Carolinas... ...Snow possible over the parts of the Northern Rockies and the higher elevations of the Great Basin... ...Heavy rain possible across portions of the Southern Plains and lower Mississippi Valley... A quasi-stationary boundary, spanning from the Atlantic Ocean to the eastern Gulf of Mexico, will aid in the development of showers and thunderstorms from Florida up to Virginia. Periods of heavy rain will focus over the Carolinas, yielding 1 to 2 inches inland and up to 4 inches just off the coast by Thursday morning. Flash flooding may occur in this region. Please refer to the Excessive Rainfall Outlook issued by WPC for additional information. The front will move offshore and weaken by Friday. Meanwhile, a front extending from the Upper Great Lakes across parts of the Upper Midwest and into parts of the Great Basin/Southern California will be quasi-stationary through Wednesday morning. Widespread precipitation is expected with this system through Friday morning. Much of the West will likely see snow, especially in the higher elevations of the Rockies and Great Basin. Accumulations over the next 3 days for the Northern Rockies of Idaho, Montana and Wyoming and for the Central Rockies in Colorado will be in the 6 to 12 inch range, with very isolated areas near 15 to 21 inches. The front will slowly advance through the Rockies in response to the upper-level trough pushes eastward. The central portion will lift as a warm front through the Upper Midwest and Great Lakes region Wednesday and Thursday. Light precipitation is expected for this area as well was southern Canada. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php