Tropical Storm Warning is in effect for Barnstable MA, Dukes MA, and Nantucket MA
Hurricane Dorian is forecast to pass about 120 miles southeast of Nantucket Saturday morning as it moves quickly northeastward and well offshore by late Saturday afternoon. Strong winds, heavy rainfall and high surf will be the main impacts, with the strongest wind and heaviest rain occurring late Friday night through Saturday morning, especially over Nantucket.
Wind gusts will peak at 40 to 60 mph late Friday night and Saturday morning over the cape and islands as winds turn from northeast to north. Winds will diminish Saturday afternoon. Total rainfall of 2 to 4 inches is possible with minor urban poor drainage flooding. A storm surge up to 2 feet is possible during the Saturday morning high tide which may bring minor coastal flooding to Nantucket Harbor.