Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 PM EDT Tue Oct 31 2017 Valid 00Z Wed Nov 01 2017 - 00Z Fri Nov 03 2017 ...Heavy snow likely over parts of the Central and Northern Rockies... ...Heavy snow possible over parts of the Northern Wisconsin and the extreme western parts of the Upper Peninsula of Michigan... ...Heavy rain possible over parts of the Western Gulf Coast... Lingering moisture along a weakening frontal boundary will keep showers and thunderstorms in the forecast from the southern Plains northward through the Ohio Valley and into the Northeast the next couple of days. Heavy rainfall will be likely across portions of the Southern Plains and central Gulf Coast this evening and into tomorrow, with isolated flash flooding and severe thunderstorms possible. On the north side of the front, another day of cool temperatures from the Ohio Valley to the Northeast is in the forecast on Wednesday, with some precipitation mixing with or changing to snow during the overnight hours possible. By Thursday, expect a sharp warm up with temperatures close to 10 degrees above normal ahead of a second system approaching from the west. Multiple waves of energy moving through aloft over the Northern Tier states will help push a cold front through the northern Rockies, northern and central Plains, and the Upper Midwest the next few days. Daytime rain and overnight accumulating snowfall will be possible, especially across the northern Plains and the upper Mississippi Valley. Generally, 2 to 4 inches of snow is forecast across these areas with winter storm warnings also in effect for portions of northern Minnesota. Farther to the west, heavy mountain snows are possible with upwards of a foot possible in the highest terrain of the northern Rockies. Behind the front, temperatures will be chilly with afternoon highs around 10 degrees below normal. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php