GMZ005-020930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 PM EST Thu Jan 1 2026
.SYNOPSIS...Gentle to moderate northwest to north breezes will
prevail this afternoon before slackening rapidly heading into the
afternoon hours. High pressure currently over the western Gulf
moves over Florida and the Florida Keys through the end of the
week. This will promote a period of light and variable breezes. A
weak front is expected to pass through the Key sometime Sunday
with a return of northerly breezes.
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>075-020930- 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 PM EST Thu Jan 1 2026 TONIGHT North winds near 10 knots, becoming north to northeast 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Wave Detail: Northeast 2 feet at 6 seconds and west to northwest 2 feet at 7 seconds. FRIDAY North to northeast winds 5 to 10 knots, becoming northeast near 5 knots in the afternoon. Seas 1 to 2 feet. Wave Detail: Northeast 2 feet at 6 seconds and west to northwest 1 foot at 6 seconds. FRIDAY NIGHT Variable winds near 5 knots. Seas 1 to 2 feet. SATURDAY Variable winds near 5 knots, becoming southwest in the afternoon. Seas 1 to 2 feet. SATURDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest near 15 knots. Seas around 2 feet, building to 2 to 4 feet. Isolated showers. SUNDAY NIGHT Northwest to north winds near 15 knots, becoming north to northeast. Seas 2 to 4 feet, occasionally to 5 feet. MONDAY North to northeast winds near 15 knots, becoming northeast 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. MONDAY NIGHT Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. TUESDAY Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. TUESDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$
GMZ052>055-072>075-020930- 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 PM EST Thu Jan 1 2026 TONIGHT North winds near 10 knots, becoming north to northeast 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Wave Detail: Northeast 2 feet at 6 seconds and west to northwest 2 feet at 7 seconds. FRIDAY North to northeast winds 5 to 10 knots, becoming northeast near 5 knots in the afternoon. Seas 1 to 2 feet. Wave Detail: Northeast 2 feet at 6 seconds and west to northwest 1 foot at 6 seconds. FRIDAY NIGHT Variable winds near 5 knots. Seas 1 to 2 feet. SATURDAY Variable winds near 5 knots, becoming southwest in the afternoon. Seas 1 to 2 feet. SATURDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest near 15 knots. Seas around 2 feet, building to 2 to 4 feet. Isolated showers. SUNDAY NIGHT Northwest to north winds near 15 knots, becoming north to northeast. Seas 2 to 4 feet, occasionally to 5 feet. MONDAY North to northeast winds near 15 knots, becoming northeast 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. MONDAY NIGHT Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. TUESDAY Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. TUESDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$