GMZ005-160830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1024 PM EDT Sat Mar 15 2025
.SYNOPSIS...Moderate to fresh southeasterly breezes are expected
to continue tonight and Sunday as the Atlantic high builds in
response to a very strong surface low centered over the Midwest. A
Small Craft Advisory remains in effect for Hawk Channel and the
Straits of Florida with Small Craft Should Exercise Caution
headlines elsewhere. A cold front associated with the low pressure
system is forecast to transit across the Florida Keys on Monday.
Peak shower coverage with isolated thunderstorms is expected ahead
of the front from Sunday night into early Monday. Strong,
occasionally near gale breezes are likely post frontal passage.
High pressure will set up over the southeastern United States mid
week which will allow breezes to slacken to gentle to moderate
before freshening again late week due to another front.
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.
$$
GMZ033-034-160830-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
1024 PM EDT Sat Mar 15 2025
SMALL CRAFT SHOULD EXERCISE CAUTION
OVERNIGHT
Southeast winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5
seconds.
SUNDAY
Southeast to south winds 15 to 20 knots, decreasing to 10
to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5
feet, subsiding to 2 to 3 feet. Wave Detail: South 3 feet at 5
seconds. Isolated showers.
SUNDAY NIGHT
Southeast to south winds 5 to 10 knots, becoming
west to northwest and increasing to 10 to 15 knots after
midnight. Seas 1 to 3 feet. Wave Detail: Southeast 2 feet at 4
seconds and southwest to west 2 feet at 5 seconds. Scattered
showers and isolated thunderstorms.
MONDAY
Northwest to north winds increasing to 25 to 30 knots.
Seas building to 6 to 9 feet, occasionally to 11 feet. Isolated
showers and thunderstorms in the morning.
MONDAY NIGHT
Northwest to north winds 25 to 30 knots,
becoming north to northeast. Seas 6 to 9 feet, occasionally to 11
feet.
TUESDAY
North to northeast winds near 25 knots, becoming
northeast and decreasing to 10 to 15 knots in the afternoon. 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 5 to 10 knots,
becoming northeast to east and increasing to 10 to 15 knots after
midnight. Seas 2 to 4 feet, occasionally to 5 feet.
WEDNESDAY
Northeast to east winds near 10 knots, decreasing to
5 to 10 knots. Seas 2 to 3 feet.
WEDNESDAY NIGHT
North winds 5 to 10 knots. Seas 1 to 2 feet.
THURSDAY
Northwest to north winds near 5 knots, becoming west
to northwest and increasing to 10 to 15 knots in the afternoon.
Seas around 1 foot, building to 1 to 2 feet.
THURSDAY NIGHT
Northwest to north winds 15 to 20 knots,
becoming north to northeast and increasing to near 20 knots. Seas
2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet,
occasionally to 8 feet.
$$
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