The areas affected include... Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N... Mona Passage Southward to 17N...
At 1100 PM AST, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located between the Mona Passage and Atlantic Offshore waters at around 10 nautical miles to the northwest of Desecheo, moving west at 5 knots.