GMZ005-122130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 AM EST Thu Feb 12 2026
.SYNOPSIS...A nebulous pressure pattern across the Florida Keys
coastal waters will support light and at times variables winds
through Friday night. High pressure diving off the Mid-Atlantic
coastline will interact with a developing area of low pressure
near the ARK- LA- TEX region by Saturday and Saturday night,
supporting freshening east to southeast breezes. The low pressure
system will drive a frontal boundary through the Keys marine zones
Sunday night into Monday, with gentle winds clocking around to the
northwest in its wake for early next week.
The Approximate Shoreward Edge of the Gulf Stream as of February
11...
15 NM South of Dry Tortugas Light...on Loggerhead Key.
9 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
10 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
20 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
8 NM Southeast of Molasses Reef Light...off Key Largo.
4 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>075-122130- 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- 424 AM EST Thu Feb 12 2026 TODAY Variable winds near 5 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. TONIGHT North winds near 5 knots, increasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 4 seconds. FRIDAY North winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. FRIDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast to east and increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. Isolated showers. SATURDAY Northeast to east winds near 10 knots, becoming east to southeast and increasing to 10 to 15 knots. Seas around 2 feet, building to 2 to 3 feet. Isolated showers. SATURDAY NIGHT East to southeast winds 15 to 20 knots, becoming southeast and increasing to near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Isolated showers. SUNDAY Southeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. Isolated showers. SUNDAY NIGHT Southeast to south winds near 15 knots, becoming south to southwest. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY Southwest to west winds 10 to 15 knots, becoming west. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY NIGHT West to northwest winds 10 to 15 knots, becoming northwest to north and decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$
GMZ052>055-072>075-122130- 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- 424 AM EST Thu Feb 12 2026 TODAY Variable winds near 5 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. TONIGHT North winds near 5 knots, increasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 4 seconds. FRIDAY North winds near 5 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. FRIDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast to east and increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. Isolated showers. SATURDAY Northeast to east winds near 10 knots, becoming east to southeast and increasing to 10 to 15 knots. Seas around 2 feet, building to 2 to 3 feet. Isolated showers. SATURDAY NIGHT East to southeast winds 15 to 20 knots, becoming southeast and increasing to near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Isolated showers. SUNDAY Southeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. Isolated showers. SUNDAY NIGHT Southeast to south winds near 15 knots, becoming south to southwest. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY Southwest to west winds 10 to 15 knots, becoming west. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY NIGHT West to northwest winds 10 to 15 knots, becoming northwest to north and decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$