GMZ005-272130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 AM EST Sat Dec 27 2025
.SYNOPSIS...Weak high pressure will meander in the eastern Gulf
over the next few days, resulting in light to gentle breezes.
Mainland nocturnal land breezes may drive brief bouts of gentle to
moderate northerlies in the morning. A healthy cold front is
expected to move through the Keys towards the middle part of next
week. This will lead to freshening northerly breezes throughout
all the Florida Keys coastal waters.
The Approximate Shoreward Edge of the Gulf Stream as of December
27...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
12 NM South of Sand Key Light...off Key West.
12 NM South of Looe Key...off Big Pine Key.
13 NM Southeast of Sombrero Key Light...off Marathon.
8 NM Southeast of Alligator Reef Light...off Islamorada.
2 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.
$$
GMZ052>055-072>075-272130- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 429 AM EST Sat Dec 27 2025 TODAY Northeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. TONIGHT Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. SUNDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 2 feet at 4 seconds. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY East winds near 5 knots, becoming variable. Seas 1 to 2 feet. MONDAY NIGHT North winds near 5 knots, becoming northwest to north and increasing to 5 to 10 knots. Seas 1 to 2 feet. TUESDAY Northwest to north winds near 10 knots, increasing to near 15 knots. Seas 2 to 3 feet, building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. TUESDAY NIGHT North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. Isolated showers. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$
GMZ052>055-072>075-272130- 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- 429 AM EST Sat Dec 27 2025 TODAY Northeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. TONIGHT Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. SUNDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 2 feet at 4 seconds. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY East winds near 5 knots, becoming variable. Seas 1 to 2 feet. MONDAY NIGHT North winds near 5 knots, becoming northwest to north and increasing to 5 to 10 knots. Seas 1 to 2 feet. TUESDAY Northwest to north winds near 10 knots, increasing to near 15 knots. Seas 2 to 3 feet, building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. TUESDAY NIGHT North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. Isolated showers. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$