GMZ005-202100-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1021 AM EDT Thu Mar 20 2025
.SYNOPSIS...High pressure will continue to meander into the
western North Atlantic this afternoon, resulting in breezes
veering to the south. Breezes will clock around to the southwest
by the end of the day as another cold front approaches the marine
zones this evening. As it passes through our waters tonight,
freshened breezes will be expected in its wake through the end of
the work week. Behind this front, yet another area of high
pressure will settle over the southeast CONUS slackening breezes
before the start of the weekend.
The Approximate Shoreward Edge of the Gulf Stream as of March 15...
14 NM South of Dry Tortugas Light...on Loggerhead Key.
3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
1 NM South of Sand Key Light...off Key West.
4 NM South of Looe Key...off Big Pine Key.
5 NM South of Sombrero Key Light...off Marathon.
5 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
2 NM East of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in Key
West based on products from the Real Time Ocean Forecast System and
NASA SPoRT.
$$
GMZ052>055-072>075-202100-
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-
1021 AM EDT Thu Mar 20 2025
THIS AFTERNOON
Southeast to south winds 5 to 10 knots,
becoming southwest to west near 10 knots. Seas 2 to 3 feet. Wave
Detail: East to southeast 2 feet at 5 seconds.
TONIGHT
West to northwest winds 10 to 15 knots, becoming
northwest 20 to 25 knots after midnight. Seas 1 to 2 feet,
building to 3 to 5 feet, occasionally to 6 feet after midnight.
Wave Detail: Northwest 2 feet at 3 seconds and east 1 foot at 4
seconds, becoming northwest 4 feet at 5 seconds and east 1 foot at
4 seconds.
FRIDAY
Northwest to west winds 20 to 25 knots, becoming north
to northeast 10 to 15 knots in the afternoon. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northwest to north 5 feet at
6 seconds.
FRIDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas 4 to
6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet,
occasionally to 7 feet.
SATURDAY
East winds near 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
SATURDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas
2 to 3 feet.
SUNDAY
East winds 10 to 15 knots, increasing to near 15 knots.
Seas 2 to 3 feet.
SUNDAY NIGHT
East to southeast winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet.
MONDAY
East to southeast winds decreasing to 10 to 15 knots.
Seas 2 to 4 feet, occasionally to 5 feet.
MONDAY NIGHT
East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.
$$
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