GMZ005-201545-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1038 PM EST Thu Feb 19 2026
.SYNOPSIS...A surface high centered in the central North Atlantic
will meander in place for the next few days. The western
periphery will stretch west through the Florida Peninsula and
into the Gulf. This will maintain mainly gentle southeasterly
breezes through Saturday morning. A period of light and variable
breezes are possible late Saturday into early Sunday as the Keys
remain in region of nebulous pressure gradient. Confidence is
increasing for a strong cold front to sweep through the Keys
coastal waters beginning Sunday evening, with strong northwest to
north breezes anticipated in its wake.
The Approximate Shoreward Edge of the Gulf Stream as of February
17...
7 NM South of Dry Tortugas Light...on Loggerhead Key.
3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
2 NM South of Sand Key Light...off Key West.
7 NM South of Looe Key...off Big Pine Key.
11 NM Southeast of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
7 NM Southeast of Molasses Reef Light...off Key Largo.
3 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>075-201545- 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- 1038 PM EST Thu Feb 19 2026 OVERNIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 2 feet at 4 seconds. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. FRIDAY NIGHT East winds 10 to 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Wave Detail: East 2 feet at 4 seconds. SATURDAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. SATURDAY NIGHT Northeast to east winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas 1 to 2 feet. SUNDAY Variable winds near 5 knots, becoming west to northwest and increasing to 10 to 15 knots in the afternoon. Seas 1 to 2 feet, building to 1 to 3 feet. Isolated showers. SUNDAY NIGHT Northwest winds near 15 knots, becoming northwest to north and increasing to near 25 knots. Seas 2 to 3 feet, building to 3 to 6 feet, occasionally to 7 feet. Isolated showers. MONDAY North winds near 25 knots, decreasing to 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. MONDAY NIGHT Northwest to north winds 20 to 25 knots, increasing to near 25 knots. Seas building to 6 to 9 feet, occasionally to 11 feet. TUESDAY North winds 20 to 25 knots, decreasing to 15 to 20 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. TUESDAY NIGHT North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. $$
GMZ052>055-072>075-201545- 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- 1038 PM EST Thu Feb 19 2026 OVERNIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 2 feet at 4 seconds. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. FRIDAY NIGHT East winds 10 to 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Wave Detail: East 2 feet at 4 seconds. SATURDAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. SATURDAY NIGHT Northeast to east winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas 1 to 2 feet. SUNDAY Variable winds near 5 knots, becoming west to northwest and increasing to 10 to 15 knots in the afternoon. Seas 1 to 2 feet, building to 1 to 3 feet. Isolated showers. SUNDAY NIGHT Northwest winds near 15 knots, becoming northwest to north and increasing to near 25 knots. Seas 2 to 3 feet, building to 3 to 6 feet, occasionally to 7 feet. Isolated showers. MONDAY North winds near 25 knots, decreasing to 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. MONDAY NIGHT Northwest to north winds 20 to 25 knots, increasing to near 25 knots. Seas building to 6 to 9 feet, occasionally to 11 feet. TUESDAY North winds 20 to 25 knots, decreasing to 15 to 20 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. TUESDAY NIGHT North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. $$