GMZ005-282130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
421 AM EST Sun Dec 28 2025
.SYNOPSIS...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 through the early morning hours. A cold front is
expected to push southeastwards across Keys waters Tuesday through
Tuesday night. This will lead to freshening northerly breezes
throughout all the Florida Keys coastal waters. While Small Craft
Advisories cannot be ruled out, they are not expected at this
time.
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.
$$
GMZ052>055-072>075-282130- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 421 AM EST Sun Dec 28 2025 TODAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 2 feet at 4 seconds. TONIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. MONDAY Northeast to east winds near 5 knots, becoming variable. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. MONDAY NIGHT Winds becoming northwest to north 5 to 10 knots. Seas around 1 foot. TUESDAY Northwest to north winds 10 to 15 knots, increasing to near 15 knots late. Seas building to 2 to 4 feet. Isolated showers. TUESDAY NIGHT Northwest to north winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas subsiding to 2 to 3 feet. Isolated showers. THURSDAY AND THURSDAY NIGHT North winds 10 to 15 knots. Seas 2 to 3 feet. $$
GMZ052>055-072>075-282130- 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- 421 AM EST Sun Dec 28 2025 TODAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 2 feet at 4 seconds. TONIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. MONDAY Northeast to east winds near 5 knots, becoming variable. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. MONDAY NIGHT Winds becoming northwest to north 5 to 10 knots. Seas around 1 foot. TUESDAY Northwest to north winds 10 to 15 knots, increasing to near 15 knots late. Seas building to 2 to 4 feet. Isolated showers. TUESDAY NIGHT Northwest to north winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas subsiding to 2 to 3 feet. Isolated showers. THURSDAY AND THURSDAY NIGHT North winds 10 to 15 knots. Seas 2 to 3 feet. $$