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Big Pine Key, FL - Bogie Channel Bridge Coastal Forecast

FZUS52 KKEY 190329
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1029 PM EST Thu Dec 18 2025

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
America, including The Florida Keys National Marine Sanctuary

Seas are given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

Wave Detail will include details about the period and direction
of origin for the highest energy waves. Long-period swells coming
from a different direction than the wind would be included in the
Wave Detail.

GMZ005-191530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 PM EST Thu Dec 18 2025

.SYNOPSIS...Gentle to moderate east to southeast breezes will
slacken as high pressure slides further eastward off the Eastern
Seaboard into the central North Atlantic. A weak front will push
through the Florida Keys coastal waters on Friday, with modestly
freshened breezes expected for the weekend in its wake. Another
high building over the Eastern Seaboard will support fresh to
strong breezes for early next week.

The Approximate Shoreward Edge of the Gulf Stream as of December 15...

26 NM South of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
15 NM South of Sand Key Light...off Key West.
18 NM South of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
13 NM Southeast of Alligator Reef Light...off Islamorada.
7 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.

$$

GMZ031-191530-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1029 PM EST Thu Dec 18 2025

.OVERNIGHT...Variable winds near 5 knots. Bay waters smooth.
Isolated showers and thunderstorms. Patchy fog developing late.
.FRIDAY...Southwest to west winds near 5 knots, becoming west to
northwest near 10 knots. Bay waters smooth, becoming a light
chop. Patchy fog in the morning. Isolated showers.
.FRIDAY NIGHT...Northwest winds near 10 knots, becoming north to
northeast 10 to 15 knots after midnight. Bay waters a light chop,
becoming a light to moderate chop.
.SATURDAY...North to northeast winds 10 to 15 knots, becoming
northeast to east near 10 knots. Bay waters a light to moderate
chop, becoming a light chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Bay
waters a light chop.
.SUNDAY...Northeast to east winds increasing to 10 to 15 knots.
Bay waters becoming a light to moderate chop.
.SUNDAY NIGHT...Northeast winds increasing to near 15 knots. Bay
waters becoming a moderate chop.
.MONDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy.
.MONDAY NIGHT AND TUESDAY...Northeast to east winds near 20
knots. Bay waters rough. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots. Bay
waters choppy. Isolated showers.

$$

GMZ032-035-191530-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1029 PM EST Thu Dec 18 2025

.OVERNIGHT...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Isolated showers and thunderstorms.
Patchy fog developing late.
.FRIDAY...Southwest to west winds 5 to 10 knots, becoming
northwest to north near 10 knots in the afternoon. Seas building
to around 1 foot. Nearshore waters smooth to a light chop,
becoming a light chop. Patchy fog in the morning. Isolated
showers.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast 10 to 15 knots. Seas building to 1 to 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
.SATURDAY...North to northeast winds 10 to 15 knots, becoming
northeast to east and briefly decreasing to 5 to 10 knots in the
afternoon. Seas 1 to 2 feet, except 2 to 3 feet west of the
Marquesas Keys. Nearshore waters a light to moderate chop,
becoming smooth to a light chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
15 to 20 knots. Seas 1 to 2 feet, except building to 2 to 3 feet
west of the Marquesas Keys. Nearshore waters a light to moderate
chop, becoming to choppy.
.MONDAY...Northeast to east winds 15 to 20 knots. Seas 2 to 3
feet, except 3 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters choppy.
.MONDAY NIGHT...Northeast to east winds near 20 knots, increasing
to 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet,
except 4 to 6 feet, occasionally to 8 feet west of the Marquesas
Keys. Nearshore waters rough, becoming very rough.
.TUESDAY...Northeast to east winds near 20 knots. Seas 2 to
4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally
to 8 feet west of the Marquesas Keys. Nearshore waters rough.
Isolated showers.
.TUESDAY NIGHT...Northeast to east winds near 20 knots, decreasing
to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet,
except 4 to 5 feet, occasionally to 6 feet west of the Marquesas
Keys. Nearshore waters rough, becoming choppy.

$$

GMZ042>044-191530-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
1029 PM EST Thu Dec 18 2025

.OVERNIGHT...Southeast to south winds 5 to 10 knots, becoming
south to southwest near 5 knots. Seas 1 to 2 feet. Nearshore
waters smooth to a light chop, becoming smooth. Isolated showers
and thunderstorms.
.FRIDAY...Southwest to west winds near 5 knots, becoming west to
northwest 5 to 10 knots. Seas around 1 foot. Nearshore waters
smooth, becoming smooth to a light chop. Isolated showers.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast 10 to 15 knots. Seas building to 1 to 2 feet.
Nearshore waters a light chop, becoming a light to moderate chop.
.SATURDAY...North to northeast winds 10 to 15 knots, becoming
northeast to east near 10 knots. Seas 1 to 2 feet, except 2 to 3
feet west of Cosgrove Shoal Light. Nearshore waters a light to
moderate chop, becoming a light chop.
.SATURDAY NIGHT...Northeast to east winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop.
.SUNDAY...Northeast winds 10 to 15 knots. Seas building to around
2 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.SUNDAY NIGHT...Northeast winds near 15 knots, increasing to 15
to 20 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop,
becoming choppy.
.MONDAY...Northeast to east winds increasing to near 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters
becoming rough.
.MONDAY NIGHT AND TUESDAY...Northeast to east winds 20 to 25
knots. Seas 3 to 5 feet, occasionally to 6 feet, except 4 to 6
feet, occasionally to 8 feet west of Cosgrove Shoal Light.
Nearshore waters very rough. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds decreasing to near 20
knots. Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters
becoming rough. Isolated showers.

$$

GMZ052>055-072>075-191530-
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-
1029 PM EST Thu Dec 18 2025

.OVERNIGHT...Southeast to south winds near 10 knots, becoming
south to southwest 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1
to 2 feet. Wave Detail: East to southeast 3 feet at 6 seconds.
Isolated showers and thunderstorms.
.FRIDAY...Southwest to west winds 5 to 10 knots, becoming
northwest near 10 knots in the afternoon. Seas 1 to 2 feet. Wave
Detail: Northeast to east 2 feet at 5 seconds and northwest 1
foot at 2 seconds. Isolated showers and thunderstorms.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast 10 to 15 knots. Seas 1 to 2 feet. Wave Detail:
North 2 feet at 3 seconds. Isolated showers.
.SATURDAY...Northeast winds 10 to 15 knots. Seas building to 2 to
3 feet. Isolated showers.
.SATURDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
2 to 3 feet. Isolated showers.
.SUNDAY...Northeast to east winds near 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Isolated showers.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Isolated showers.
.MONDAY...Northeast winds near 20 knots, increasing to 20 to 25
knots. Seas 5 to 8 feet, occasionally to 10 feet. Isolated
showers.
.MONDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 8 to
11 feet, occasionally to 14 feet. Isolated showers.
.TUESDAY...Northeast to east winds 20 to 25 knots. Seas 7 to
10 feet, occasionally to 13 feet. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas
6 to 9 feet, occasionally to 11 feet. Isolated showers.

$$

GMZ033-034-191530-
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-
1029 PM EST Thu Dec 18 2025

.OVERNIGHT...Southwest 5 to 10 knots. Seas around 1 foot. Wave
Detail: Southeast to south 1 foot at 4 seconds. Scattered showers
and isolated thunderstorms. Patchy fog developing late.
.FRIDAY...West winds 5 to 10 knots, becoming northwest to north
near 10 knots in the afternoon. Seas around 1 foot. Wave Detail:
Southwest to west 1 foot at 3 seconds. Isolated showers.
.FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming
north to northeast 10 to 15 knots. Seas 1 to 2 feet, building to
around 2 feet. Wave Detail: Northwest 2 feet at 4 seconds.
.SATURDAY...North to northeast winds 10 to 15 knots, becoming
northeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming
northeast to east near 10 knots. Seas 2 to 3 feet.
.SUNDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots, becoming
northeast to east 15 to 20 knots. Seas building to 2 to 3 feet.
.MONDAY...Northeast to east winds 15 to 20 knots. Seas building to 3
to 5 feet, occasionally to 6 feet.
.MONDAY NIGHT...Northeast to east winds 15 to 20 knots,
increasing to 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8
feet.
.TUESDAY...Northeast to east winds 20 to 25 knots, decreasing to
15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated
showers.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet.

$$


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