Weak high pressure will continue to the north of the Florida Keys overnight and early Tuesday. An area of low pressure will develop over the western Gulf of Mexico early Tuesday...and move eastward on Wednesday. The low pressure system then will deepen as it moves northeastward along the eastern Seaboard Thursday. A weak stationary front over the northern Gulf of Mexico will intensify and move southward Wednesday and Thursday...likely approaching the Florida Keys by late Thursday. Cooler and drier air will arrive on the heels of gusty northwest breezes Thursday night and Friday. The approximate shoreward edge of the Gulf Stream as of November 23... 36 nm south of Dry Tortugas light...on Loggerhead Key. 41 nm south of Cosgrove Shoal light...off the Marquesas Keys. 41 nm south of Sand Key light...off Key West. 23 nm south of Looe Key...off Big Pine Key. 20 nm south of Sombrero Key light...off Marathon. 1 nm southeast of Alligator Reef light...off Islamorada. 1 nm southeast of Molasses Reef light...off Key Largo. 15 nm east of Carysfort Reef light...off Ocean Reef. Gulf Stream information courtesy of the naval oceanographic office.

Northeast to east winds increasing to near 10 knots. Seas beyond the reef building to 2 to 3 feet. Seas inside the reef around 1 foot. Nearshore waters becoming a light chop. Isolated showers late.

East winds 10 to 15 knots. Seas beyond the reef 2 to 4 feet...except higher in the Gulf Stream. Seas inside the reef 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers Tuesday...scattered showers Tuesday night.

Southeast winds 10 to 15 knots. Seas beyond the reef 2 to 4 feet. Seas inside the reef 1 to 2 feet. Nearshore waters a light to moderate chop. Numerous showers and isolated thunderstorms.

South winds 10 to 15 knots...shifting to northwest and increasing to near 15 knots and gusty late. Seas beyond the reef 3 to 5 feet. Seas inside the reef around 2 feet. Nearshore waters a light to moderate chop. Scattered showers.

Northwest to north winds 15 to 20 knots and gusty. Seas beyond the reef 3 to 6 feet. Seas inside the reef 1 to 2 feet. Nearshore waters choppy to rough. Isolated showers.

Northeast winds near 15 knots and gusty. Seas beyond the reef 3 to 5 feet...except higher in the Gulf Stream. Seas inside the reef around 2 feet. Nearshore waters a moderate chop to choppy.

Water Temperatures