Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 340 PM EDT Mon Oct 12 2020 Valid 00Z Tue Oct 13 2020 - 00Z Thu Oct 15 2020 ..A slow moving area of low pressure will bring moderate to heavy rains to portions of the Northeast through Tuesday... ...A fast moving front will bring heavy precipitation to the Pacific Northwest into the Northern Rockies on Tuesday with heavy snows for the northern Washington State Cascades and Northern Rockies of Montana... ...Above average temperatures across much of the nation over the next two days. The beginning of a significant mid week cool down begins across the Northern Rockies/Northern High Plains on Wednesday... A slow moving area of low pressure moving northeast along the Northern Mid Atlantic coast tonight and across southeast New England on Tuesday will bring a broad area of moderate to heavy precipitation from eastern New York State, across all of New England. Much of this region has been dry over the past month, with rainfall 2 to 4 inches below average. In contrast to the slow moving low along the northeast, a very fast moving area of low pressure and its associated front will move off the northeast Pacific and across the Pacific Northwest and Northern Rockies on Tuesday. Heavy precipitation likely across the Pacific Northwest and Northern Rockies with this system, along with high elevation heavy snows for the northern Washington State Cascades and Northern Rockies of Montana. This area of low pressure will continue to move quickly eastward Tuesday night into Wednesday across the Northern Plains into the Upper Mississippi Valley. Precipitation amounts are expected to be lighter across these areas Tuesday night into Wednesday, and confined to areas along the border with south central Canada. Temperatures over the next two days will be mostly above average across the nation, with exceptions being across the above mentioned areas that will see precipitation. The most anomalously warm temperatures will be across California Tuesday and Wednesday and across the Southern to Central High Plains on Wednesday where temperatures will be 15 to 20 degrees above average. However, the first signs of a significant mid to late week cool down will appear across the Northern Plains on Wednesday in the wake of the above mentioned fast moving area of low pressure and the associated cold front. These below average temperatures will plunge southeastward mid to late week across much of the central to eastern U.S. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php