GMZ005-300845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
438 PM EDT Wed Apr 29 2026
.SYNOPSIS...A small high pressure system centered east of the
Florida Peninsula will continue to drift southeastward tonight,
resulting in gentle to moderate easterlies trending downwards and
shifting southeast to south. A weak low pressure system swinging
off the southeast coast on Thursday will slacken local breezes
further and introduce variable direction. Another weak low will
push across Florida late this week and into the weekend, likely
supporting a period of gentle to moderate southeasterly breezes.
Winds should slacken again later in the weekend as the pressure
gradient weakens. A weak disturbance in the Gulf coupled with
increased moisture will supported elevated rain and thunder
chances for late in the weekend and into early net week.
The Approximate Shoreward Edge of the Gulf Stream as of April 28...
16 NM South of Dry Tortugas Light...on Loggerhead Key.
10 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
9 NM South of Sand Key Light...off Key West.
9 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
6 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT and RTOFS.
$$
GMZ052>055-072>075-300845- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 438 PM EDT Wed Apr 29 2026 TONIGHT Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. THURSDAY Southeast winds 5 to 10 knots, becoming variable. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. THURSDAY NIGHT Variable winds 5 to 10 knots, becoming southeast after midnight. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. FRIDAY Southeast winds near 10 knots. Seas 1 to 2 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots, becoming southeast to south after midnight. Seas 2 to 3 feet. SATURDAY Southeast to south winds 10 to 15 knots, becoming variable near 10 knots. Seas 2 to 3 feet. SATURDAY NIGHT Variable winds 5 to 10 knots, becoming south to southwest. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY Southwest winds 5 to 10 knots, becoming west to northwest. Seas 2 to 3 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Northwest winds near 10 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. MONDAY Northwest winds near 10 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northwest to north winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. $$
GMZ052>055-072>075-300845- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 438 PM EDT Wed Apr 29 2026 TONIGHT Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. THURSDAY Southeast winds 5 to 10 knots, becoming variable. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. THURSDAY NIGHT Variable winds 5 to 10 knots, becoming southeast after midnight. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. FRIDAY Southeast winds near 10 knots. Seas 1 to 2 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots, becoming southeast to south after midnight. Seas 2 to 3 feet. SATURDAY Southeast to south winds 10 to 15 knots, becoming variable near 10 knots. Seas 2 to 3 feet. SATURDAY NIGHT Variable winds 5 to 10 knots, becoming south to southwest. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY Southwest winds 5 to 10 knots, becoming west to northwest. Seas 2 to 3 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Northwest winds near 10 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. MONDAY Northwest winds near 10 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northwest to north winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. $$