Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 PM EDT Thu Sep 17 2020 Valid 00Z Fri Sep 18 2020 - 00Z Sun Sep 20 2020 ...Sally expected to continue producing areas of heavy rain and strong storms as it moves across the Carolinas and southeastern Virginia Thu night-Fri morning... ...Below-normal temperatures expected across the Midwest and eastern U.S. Friday into the weekend... ...Beneficial rains forecast for portions of West but fire weather remains a concern... Although no longer a tropical system, the remnants of Sally will continue to produce areas of heavy rain and strong storms as it moves across the Carolinas and southeastern Virginia Thursday night into Friday morning. These heavy rains are expected to produce areas of flash flooding across the region. Strong to severe thunderstorms, including a few tornadoes, are also possible Thursday afternoon into the overnight across the eastern Carolinas. The system is expected to move offshore Friday morning, with more tranquil weather taking hold through the weekend. Some of the coldest air of the season thus far has begun to settle into the Midwest and eastern U.S. Freeze warnings and frost advisories are in effect Thursday night to Friday morning across portions of the northern Great Lakes and the Northeast. Cold high pressure is forecast to drop southeast out of central Canada, bringing dry conditions and below-normal temperatures to much of the Midwest and eastern U.S. on Friday into the weekend. With temperatures topping out as much as 10-20 degrees below normal, the weekend is expected to feel fall-like across portions of the eastern U.S. Strong to severe thunderstorms are expected across portions of western Oregon and Washington as a Pacific system moves onshore later today. This system is expected to bring some beneficial rains and cooler temperatures as it moves through the Northwest into the northern Great Basin and Rockies Friday and Saturday. However, gusty winds ahead of the system are expected to pose fire weather concerns, with Red Flag Warnings in effect until Friday across portions of the Great Basin into the Rockies. Dry and windy conditions will likely pose fire weather concerns into the weekend across the southern Great Basin into the Rockies. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php