Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 239 PM EDT Wed Aug 28 2019 Valid 00Z Thu Aug 29 2019 - 00Z Sat Aug 31 2019 ...Dorian to bring potentially life threatening impacts to Puerto Rico and the U.S. Virgin Islands tonight... ...Tropical moisture ahead of Erin to bring a heavy rain and flash flooding threat to eastern New England Wednesday night... ...Cooler than average temperatures expected from the Northern/Central Plains into the Ohio Valley, Mid-Atlantic and Northeast... ...Above normal temperatures and a fire weather threat to continue for large portions of the west... Dorian is expected to track to the northwest of the U.S. Virgin Islands and Puerto Rico tonight. Potentially life-threatening impacts of high winds, heavy rains, flooding and high surf will continue into Wednesday night across these areas. With the official NHC track pushing Dorian farther away from Puerto Rico and the U.S. Virgin Island on Thursday, the impacts will be diminishing across these areas at this time. See the latest NHC forecasts and advisories for updated and additional information on Dorian. While Erin has been downgraded off the east coast of the U.S., tropical moisture ahead of Erin will continue to be drawn northward across portions of New England ahead of a front pushing into the Northeast tonight. This will support the potential for heavy rains and isolated flooding across portions of New England tonight into early Thursday, well away from the center of Erin. Behind the cold front moving into the Northeast tonight, cooler than average on tap from the Northeast, Mid Atlantic, Appalachians into the Ohio Valley on Thursday. A second front currently pushing southeast into the Northern Plains will bring additional cool weather across the Northern Plains Thursday and south into the Central Plains and Upper Mississippi Valley during Friday. Above average temperatures will continue over the next two days across much of the Western U.S. where high temperatures are forecast to be 6-12+ degrees above average. In addition to the above average temperatures, a fire weather threat will continue across large portions of the Great Basin late Wednesday, into Thursday and Friday as very dry conditions persist across these areas. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php