The areas affected include... Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N... Caribbean Waters of Puerto Rico from 10 NM to 17N, including the Coastal Waters of Saint Croix... Coastal Waters OF Northwestern Puerto Rico out 10 NM... Coastal Waters OF Southwestern Puerto Rico out 10 NM... Coastal Waters of Northern Puerto Rico out 10 NM... Coastal Waters of Southern Puerto Rico out 10 NM... Mona Passage Southward to 17N...
At 419 PM AST, Doppler radar indicated a clusters of strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located over mainly areas of western coastal areas, moving west at 10 knots.