GMZ005-140845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 PM EDT Thu Mar 13 2025
.SYNOPSIS...High pressure over the western North Atlantic will
keep shifting eastward tonight as it anchors across the central
North Atlantic and builds heading through the weekend. Breezes
will slacken to light to gentle with occasional variable periods
tonight and Friday. The Atlantic high will build over the Atlantic
while a strong surface low develops over the central United
States over the weekend. As a result, breezes will freshen Friday
night through Sunday. Cold frontal passage associated with this
low is expected sometime Sunday night or Monday,and another round
of fresh breezes is expected for early to mid next week.
The Approximate Shoreward Edge of the Gulf Stream as of March
8...
35 NM South of Dry Tortugas Light...on Loggerhead Key.
19 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
16 NM South of Sand Key Light...off Key West.
8 NM South of Looe Key...off Big Pine Key.
8 NM South of Sombrero Key Light...off Marathon.
7 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
3 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>075-140845-
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-
1031 PM EDT Thu Mar 13 2025
OVERNIGHT
Variable winds 5 to 10 knots. Seas 2 to 3 feet,
subsiding to 1 to 2 feet. Wave Detail: East to southeast 2 feet at
5 seconds. Isolated showers.
FRIDAY
Northeast to east winds 5 to 10 knots, becoming east to
southeast and increasing to near 10 knots. Seas 1 to 2 feet. Wave
Detail: East 1 foot at 5 seconds.
FRIDAY NIGHT
East to southeast winds 10 to 15 knots,
increasing to 15 to 20 knots after midnight. Seas 1 to 3 feet,
building to 2 to 4 feet, occasionally to 5 feet. Wave Detail: East
to southeast 3 feet at 4 seconds. Isolated showers.
SATURDAY
Southeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Isolated showers.
SATURDAY NIGHT
Southeast winds near 20 knots. Seas 4 to 7
feet, occasionally to 8 feet. Isolated showers.
SUNDAY
Southeast winds near 20 knots, decreasing to near 15
knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet,
subsiding to 3 to 5 feet, occasionally to 7 feet. Isolated
showers.
SUNDAY NIGHT
Southeast winds 10 to 15 knots, becoming south to
southwest after midnight. Seas 2 to 4 feet, occasionally to 5
feet. Scattered showers.
MONDAY
West to northwest winds 15 to 20 knots, becoming north
in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet.
Scattered showers.
MONDAY NIGHT
North to northeast winds near 20 knots, becoming
northeast. Seas 5 to 7 feet, occasionally to 9 feet.
TUESDAY
Northeast to east winds near 20 knots. Seas 6 to
7 feet, occasionally to 9 feet, building to 7 to 9 feet,
occasionally to 11 feet.
TUESDAY NIGHT
Northeast to east winds near 20 knots. Seas 5 to
8 feet, occasionally to 10 feet.
$$
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