GMZ005-151430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1018 PM EDT Wed Oct 14 2026
.SYNOPSIS...
Small Craft Exercise Caution headlines are in place for the Bay
and Gulfside waters during the overnight hours until winds
decrease before sunrise. High pressure centered just off the
Southeast coastline will interact with a weak frontal boundary
stalled over the Straits of Florida. This will promote gentle to
moderate easterly breezes over the next several days. Late week, a
second, much stronger front, is expected to drive southeastward
through the Gulf towards the Florida Keys over the weekend before
stalling. Fresh to strong breezes, along with squally conditions,
will be possible for the latter part of the weekend. A Small Craft
Advisory likely will be required for portions or all of the
Florida Keys marine zones by Sunday.
The Approximate Shoreward Edge of the Gulf Stream as of October
9, 2026...
53 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
33 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
24 NM south-southeast of Sand Key Light, off Key West
19 NM south-southeast of Looe Key, off Big Pine Key
13 NM south-southeast of Sombrero Key Light, off Marathon
5 NM south-southeast of Alligator Reef Light, off Islamorada
2 NM east of Molasses Reef Light, off Key Largo
2 NM east of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ052>055-072>075-151430-
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-
1018 PM EDT Wed Oct 14 2026
OVERNIGHT
East to southeast winds near 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast to east 4
feet at 5 seconds. A chance of showers with a slight chance of
thunderstorms.
THURSDAY
East to southeast winds 10 to 15 knots, increasing to
near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 5 seconds. A chance of showers with a
slight chance of thunderstorms.
THURSDAY NIGHT
East to southeast winds near 15 knots,
decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5
feet. Wave Detail: East 4 feet at 5 seconds. A chance of showers
with a slight chance of thunderstorms.
FRIDAY
East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet. A chance of showers with a
slight chance of thunderstorms.
FRIDAY NIGHT
East to southeast winds near 10 knots, decreasing
to 5 to 10 knots. Seas around 2 feet. A chance of showers with a
slight chance of thunderstorms.
SATURDAY
Northeast to east winds 5 to 10 knots, increasing to
near 10 knots. Seas around 2 feet, building to 2 to 3 feet. A
chance of showers and thunderstorms.
SATURDAY NIGHT
.Northeast to east winds 10 knots, increasing
to 15 to 20 knots. Seas 2 to 3 feet, building to 3 to 5 feet,
occasionally to 6 feet. Showers with a chance of thunderstorms.
SUNDAY
Northeast to east winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Showers with a chance of
thunderstorms.
SUNDAY NIGHT
Northeast to east winds near 20 knots, increasing
to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet,
building to 6 to 8 feet, occasionally to 10 feet. Showers with a
chance of thunderstorms.
MONDAY AND MONDAY NIGHT
Northeast to east winds 20 to 25
knots. Seas 6 to 8 feet, occasionally to 10 feet. Showers likely
with a chance of thunderstorms.
$$
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