GMZ005-170230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1028 AM EDT Thu Jul 16 2026
.SYNOPSIS...
High pressure currently building over the eastern Gulf will
continue to encourage generally gentle northeast to east breezes,
occasionally becoming east to southeast. However, breezes will
still tend to peak in the evening and overnight hours, before
modestly lulling in the late morning and afternoon periods. A
large area of Saharan dust will remain in place across the Florida
Keys marine zones for the next several days, acting to limit rain
and thunder chances.
The Approximate Shoreward Edge of the Gulf Stream as of
July 12...
63 NM South of Dry Tortugas Light...on Loggerhead Key.
38 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
21 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
12 NM South of Sombrero Key Light...off Marathon.
7 NM Southeast of Alligator Reef Light...off Islamorada.
3 NM Southeast of Molasses Reef Light...off Key Largo.
2 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ032-035-170230- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1028 AM EDT Thu Jul 16 2026 THIS AFTERNOON Northeast to east winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less, except around 1 foot west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming smooth. A slight chance of showers and thunderstorms. TONIGHT Northeast to east winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. FRIDAY Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. FRIDAY NIGHT Variable winds near 5 knots, becoming east to southeast after midnight. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. SATURDAY Southeast to south winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. SATURDAY NIGHT Southeast to south winds near 5 knots, increasing to near 10 knots after midnight. Seas around 1 foot. Nearshore waters smooth, becoming a light chop. A slight chance of showers and thunderstorms. SUNDAY South to southwest winds near 10 knots, becoming southwest and decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. A slight chance of showers and thunderstorms. SUNDAY NIGHT Southwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. MONDAY Southwest winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. A slight chance of showers and thunderstorms. MONDAY NIGHT Southwest winds 5 to 10 knots, becoming south after midnight. Seas 1 foot or less. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. $$
GMZ032-035-170230- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1028 AM EDT Thu Jul 16 2026 THIS AFTERNOON Northeast to east winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less, except around 1 foot west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming smooth. A slight chance of showers and thunderstorms. TONIGHT Northeast to east winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. FRIDAY Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. FRIDAY NIGHT Variable winds near 5 knots, becoming east to southeast after midnight. Seas 1 foot or less. Nearshore waters smooth. A slight chance of showers and thunderstorms. SATURDAY Southeast to south winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. SATURDAY NIGHT Southeast to south winds near 5 knots, increasing to near 10 knots after midnight. Seas around 1 foot. Nearshore waters smooth, becoming a light chop. A slight chance of showers and thunderstorms. SUNDAY South to southwest winds near 10 knots, becoming southwest and decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. A slight chance of showers and thunderstorms. SUNDAY NIGHT Southwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. MONDAY Southwest winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. A slight chance of showers and thunderstorms. MONDAY NIGHT Southwest winds 5 to 10 knots, becoming south after midnight. Seas 1 foot or less. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. $$