Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas
An area of low pressure will move slowly eastward to the western North Atlantic overnight and Saturday. An associated trough will approach the Florida Keys late tonight...and pass through the Florida Keys and adjacent coastal waters early Saturday. Thereafter...the low pressure area will move farther away across the western North Atlantic...as a high pressure system builds in well north of the Keys. The approximate shoreward edge of the Gulf Stream as of April 18... 46 nm south of Dry Tortugas light...on Loggerhead Key. 16 nm south of Cosgrove Shoal light...off the Marquesas Keys. 14 nm south of Sand Key light...off Key West. 5 nm south of Looe Key...off Big Pine Key. 7 nm south of Sombrero Key light...off Marathon. 14 nm southeast of Alligator Reef light...off Islamorada. 17 nm southeast of Molasses Reef light...off Key Largo. 10 nm east of Carysfort Reef light...off Ocean Reef. Gulf Stream information courtesy of the naval oceanographic office.