GMZ005-030930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
427 PM EST Fri Jan 2 2026
.SYNOPSIS...High pressure over South Florida will maintain light
and variable breezes tonight and into the weekend. A weak front
is expected to pass through the Key late Sunday, bringing in light
northerlies. In the wake of the front, high pressure will slide
across the eastern United States. This will maintain northeast
breezes initially before becoming mainly easterly as the high
moves out into the Atlantic.
The Approximate Shoreward Edge of the Gulf Stream as of January
01...
14 NM South of Dry Tortugas Light...on Loggerhead Key.
14 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
9 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 based on products from NASA SPoRT and RTOFS.
$$
GMZ052>055-072>075-030930- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 427 PM EST Fri Jan 2 2026 TONIGHT Variable winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at 4 seconds and northeast to east 1 foot at 5 seconds. SATURDAY Variable winds near 5 knots, becoming southwest to west in the afternoon. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 5 seconds. SATURDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY Southwest to west winds 5 to 10 knots, becoming west 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. SUNDAY NIGHT Northwest to north winds near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. MONDAY North to northeast winds near 10 knots, becoming northeast to east 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. MONDAY NIGHT AND TUESDAY East winds near 10 knots. Seas around 2 feet. TUESDAY NIGHT AND WEDNESDAY East winds 10 to 15 knots. Seas 2 to 3 feet. WEDNESDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet. $$
GMZ052>055-072>075-030930- 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- 427 PM EST Fri Jan 2 2026 TONIGHT Variable winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at 4 seconds and northeast to east 1 foot at 5 seconds. SATURDAY Variable winds near 5 knots, becoming southwest to west in the afternoon. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 5 seconds. SATURDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY Southwest to west winds 5 to 10 knots, becoming west 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. SUNDAY NIGHT Northwest to north winds near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. MONDAY North to northeast winds near 10 knots, becoming northeast to east 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Halfmoon Shoal Light. Isolated showers. MONDAY NIGHT AND TUESDAY East winds near 10 knots. Seas around 2 feet. TUESDAY NIGHT AND WEDNESDAY East winds 10 to 15 knots. Seas 2 to 3 feet. WEDNESDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet. $$