Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 325 AM EDT Wed Aug 28 2019 Valid 12Z Wed Aug 28 2019 - 12Z Fri Aug 30 2019 ...Dorian to bring potentially life threatening impacts to Puerto Rico Wednesday... ...There is a slight risk of excessive rainfall over most of New England... ...Temperatures will be 10 to 15 degrees above average over the western third of the country... ...Excessive Heat Warnings, Heat Advisory, and Red Flag Warnings for parts of the Central Rockies/Great Basin to the West Coast... Dorian is expected to track northwest from the eastern Caribbean toward Puerto Rico. Dorian will bring potentially life threatening impacts to the island with heavy to flooding rains, high winds, high surf and storm surge potential. The official NHC forecast track for Dorian brings the storm into the Bahamas Friday-Saturday and possibly into the east coast of Florida by Sunday. See the latest NHC forecasts and advisories for updated and additional information on Dorian. T.S. ERIN, is expected to move northeastward and remain well off the East Coast of the U.S. over the next few days. While the center of this storm will remain well offshore...tropical moisture near T.S. ERIN may be drawn northward ahead of a cold front moving across the Northeast on Wednesday into Thursday, enhancing rainfall and flooding potential well to the north of T.S. ERIN across most of New England. The moisture will aid in producing excessive rainfall over the region producing flash flooding. A front extending from parts of the Lower Great Lakes across the Central Appalachians into the Lower Mississippi Valley/Southern Plains will move off most of the East Coast by Thursday evening. Showers and thunderstorms will develop along and ahead of the boundary while the front moves off the East Coast. A second front will move southeastward out of Western Canada into Northern High Plains on Wednesday and into the Great Lakes by Thursday evening. Showers and thunderstorms will develop along and ahead of the boundary on Thursday into Thursday evening over the Great Lakes into Middle Mississippi Valley and the Central Plains. Above average temperatures likely to continue this period across most of the West and into South and West Texas. Excessive Heat Warnings and heat advisories in effect across portions of these areas will likely continue over the next few days. In addition to the heat, dry weather will support a wildfire risk across portions of the West this forecast period. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php