The areas affected include... Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM...
At 550 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located 47 nm south of The Coastal Waters South Of Nantucket, moving southeast at 20 knots.
The strong thunderstorm will remain over mainly open waters.