Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 208 AM EST Sun Nov 01 2020 Valid 12Z Sun Nov 01 2020 - 12Z Tue Nov 03 2020 ...Rain and snow from Great Lakes into Northeast... ...Another shot of cold Canadian air across the eastern half of the U.S. while the West warm up expands eastward by Monday... A reinforcing shot of cold Canadian air surges southeastward across the upper Midwest/Great Lakes to catch up to the primary cold front early Sunday. The combination along with the slow southward progression of the initial cold front across the Southern Plains into the Deep South will result a large portion of the Eastern US to experience 10-20 degree below average temperatures Sunday into Monday; as such a large Freeze Watch is in effect across much of central Mississippi, lower Ohio and Tennessee River Valleys. Daily maximum temperatures on Monday across the Northeast through Central Appalachians may even exceed 20-30 degrees below normal. Weak showers will turn to snow showers behind the cold front, and with this cold air rushing over the warmer Great Lakes, bands of Lake Effect snows are expected, as such Winter Weather Advisories are in effect across the Northern MI and the U.P. of MI. Precipiation, likely in the form of snow, along with strong winds area expected to increase across Eastern Maine late Monday before clearing into Tuesday, as new surface cyclone rapidly develops from NY toward Southeast Canada. A weaker Clipper will move through the Northeast on Tuesday bringing another shot of light precipitation as well. Strong ridging aloft across the Western U.S. will continue to slowly advance eastward. With the upper-level jet and moisture stream still well north across British Columbia for the next few days, clearer skies and warmer temperatures will result across nearly all of the West with temperatures still remaining 10-20 degrees above normal through Monday. This will expand into the Northern Plains where down-sloping should help to push temperatures 20-25 degrees above normal Monday to Tuesday. Fire risk will continue to be Elevated per the Storm Prediction Center across the Transverse and Peninsular Ranges of Southern California. Gallina Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php