GMZ005-100230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1017 AM EDT Mon Mar 9 2026
.SYNOPSIS...High pressure is centered near Bermuda with the
western periphery of this ridge extending west into Florida and
the Gulf. As the high retreats further into the Atlantic this
week, breezes will shift to the east to southeast. A decaying
frontal boundary is anticipated to drift southeastward across the
Gulf late week which may create for a chaotic wind pattern across
the Florida Keys coastal waters.
The Approximate Shoreward Edge of the Gulf Stream as of March 7...
55 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
7 NM South of Sand Key Light...off Key West.
8 NM South of Looe Key...off Big Pine Key.
10 NM Southeast of Sombrero Key Light...off Marathon.
8 NM Southeast of Alligator Reef Light...off Islamorada.
5 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>075-100230-
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-
1017 AM EDT Mon Mar 9 2026
THIS AFTERNOON
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds.
Isolated showers.
TONIGHT
East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds.
Isolated showers.
TUESDAY
East winds near 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds.
Isolated showers.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Isolated showers.
WEDNESDAY
East to southeast winds near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Isolated showers.
WEDNESDAY NIGHT
East to southeast winds near 15 knots. Seas
3 to 4 feet, occasionally to 5 feet. Isolated showers.
THURSDAY
Southeast winds 10 to 15 knots, becoming variable and
decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5
feet, subsiding to 2 to 3 feet. Isolated showers.
THURSDAY NIGHT
Variable winds 5 to 10 knots, becoming east to
southeast. Seas 1 to 2 feet. Isolated showers.
FRIDAY
East to southeast winds 5 to 10 knots, becoming variable.
Seas 1 to 2 feet, except 2 to 3 feet west of Halfmoon Shoal Light
due to northwest swell. Scattered showers and isolated
thunderstorms.
FRIDAY NIGHT
Northwest to north winds 5 to 10 knots, becoming
north to northeast. Seas 1 to 2 feet, except 3 to 4 feet,
occasionally to 5 feet west of Halfmoon Shoal Light. Isolated
showers and thunderstorms.
$$
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