Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 411 AM EDT Sun Oct 11 2020 Valid 12Z Sun Oct 11 2020 - 12Z Tue Oct 13 2020 ...Post-T.C. Delta to spread heavy rain and thunderstorms across East coast through Monday... ...Rain and high-elevation snow for Pacific Northwest and Northern Rockies; rain and thunderstorms across Upper Mississippi Valley... ...Elevated Fire Risk and above average temperatures across Great Plains; cool down in the Northwest... Post-Tropical Cyclone Delta is forecast to continue slowly weakening as it trudges up the Tennessee Valley and into the Southern Appalachians today. It is expected to produce rain and thunderstorms out ahead of it from the Southeast into the Mid-Atlantic, with the heaviest amounts falling in a swath from the Central Appalachians to southern New Jersey. The chance for flash flooding is particularly evident over the Southern Appalachians on Sunday and Monday. Rain is expected to spread into the Northeast as Post-T.C. Delta interacts with a boundary to the north of it on Monday. Rainfall totals may reach 2 inches in isolated areas near Long Island. Meanwhile, another low pressure system will cross the Great Plains today and bring with it the chance for severe weather to the Upper Mississippi Valley. Rain rates may not be significant enough to warrant a flash flooding threat, but an isolated event associated with severe thunderstorms cannot be ruled out. Another system is forecast to approach the Pacific Northwest today and bring with it the chance of heavy snow to the higher elevations of Washington and the Northern Rockies through Monday. Heavy rain will fall over the lower elevations of the Northwest U.S.. Temperatures across the Great Plains are expected to be well above average out ahead of a deepening upper level trough to the west. Highs could break records across much of the Southern Plains where temperatures could breach 100 degrees in a number of Texas cities. Very low dew points across the Front Range are expected to contribute to the Elevated Fire Risk for that area through Monday. A Critical area of Fire Risk is in effect for much of western New Mexico and eastern Texas as conditions there are likely to be very favorable for fires. Red Flag warnings are also in affect along the Front Range. Temperatures are expected to cool down today across the Northern Rockies behind the cold front moving into the Great Plains. Low temperatures across the Southeast and Mid-Atlantic maybe so warm, due to a strong surge of warm moist air from Delta, that they break records Sunday night. Kebede Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php