Coastal Waters Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
000
FZUS52 KKEY 120923
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
423 AM EST Tue Dec 12 2017

Florida Bay...Hawk Channel and Straits of Florida from Ocean Reef to
south of Dry Tortugas...and the extreme southeastern Gulf of
Mexico...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.

GMZ005-121530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 AM EST Tue Dec 12 2017

.SYNOPSIS...A weak cold front will approach South Florida
today and clear our region tonight. An area of high pressure will
slide eastward across the Gulf of Mexico and Florida peninsula
Wednesday night through Thursday night.

The Approximate Shoreward Edge of the Gulf Stream current, as of
December 9th, 2017,

16 NM South of Dry Tortugas Light, on Loggerhead Key.
35 NM South of Cosgrove Shoal Light, off the Marquesas Keys.
41 NM South of Sand Key Light, off Key West.
32 NM South of Looe Key, off Big Pine Key.
15 NM South of Sombrero Key Light, off Marathon.
 9 NM Southeast of Alligator Reef Light, off Islamorada.
 2 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 Naval Oceanographic Office.

$$

GMZ031-121530-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
423 AM EST Tue Dec 12 2017

.TODAY...North winds near 10 knots, becoming northwest and
increasing to near 15 knots this afternoon. Bay waters a light
chop becoming a moderate chop.
.TONIGHT...Northwest to north winds 15 to 20 knots. Bay waters
choppy.
.WEDNESDAY...North winds 15 to 20 knots, decreasing to near 10
knots in the afternoon. Bay waters choppy, becoming a light chop.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Bay waters a light
to moderate chop.
.THURSDAY...North winds near 10 knots. Bay waters a light chop.
.THURSDAY NIGHT...Northwest to north winds near 10 knots. Bay
waters a light chop.
.FRIDAY...Northwest winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.FRIDAY NIGHT...West to northwest winds near 15 knots, becoming
north and increasing to 15 to 20 knots by midnight. Bay waters a
moderate chop, becoming choppy. Isolated showers.
.SATURDAY...North to northeast winds 15 to 20 knots. Bay waters
choppy.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Bay waters
choppy.

$$

GMZ032-035-121530-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
423 AM EST Tue Dec 12 2017

.TODAY...Northwest to north winds near 10 knots becoming northwest
and increasing to near 15 knots. Seas around 2 feet. Nearshore
waters a light chop, becoming a moderate chop.
.TONIGHT...Northwest to north winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy.
.WEDNESDAY...North winds 15 to 20 knots, decreasing to 10 to 15
knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2
feet. Nearshore waters choppy, becoming a light to moderate chop.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop.
.THURSDAY...North winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop.
.THURSDAY NIGHT...Northwest to north winds near 10 knots. Seas 1
foot or less. Nearshore waters a light chop.
.FRIDAY...Northwest winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop. Isolated showers.
.FRIDAY NIGHT...West to northwest winds near 15 knots, becoming
north and increasing to near 20 knots by midnight. Seas 1 to 2
feet, building to 2 to 3 feet. Nearshore waters a moderate chop,
becoming rough. Isolated showers.
.SATURDAY...North to northeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy. .
.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3
feet. Nearshore waters choppy.

$$

GMZ042>044-121530-
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-
423 AM EST Tue Dec 12 2017

.TODAY...North winds near 10 knots, becoming northwest and
increasing to near 15 knots. Seas 1 to 3 feet. Nearshore waters a
light chop becoming a moderate chop.
.TONIGHT...Northwest to north winds 15 to 20 knots. Seas 2 to 4
feet. Nearshore waters choppy.
.WEDNESDAY...North winds 15 to 20 knots, decreasing to 10 to 15
knots in the afternoon. Seas 2 to 4 feet, subsiding to around 2
feet. Nearshore waters choppy, becoming a light to moderate chop.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop.
.THURSDAY...North winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters a light chop.
.THURSDAY NIGHT...Northwest to north winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop.
.FRIDAY...Northwest winds 10 to 15 knots, increasing to near 15
knots in the afternoon. Seas 1 to 2 feet, building to 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.FRIDAY NIGHT...West to northwest winds 15 to 20 knots, becoming
north and increasing to near 20 knots by midnight. Seas 2 to 4
feet, building to 3 to 5 feet. Nearshore waters choppy, becoming
rough. Isolated showers.
.SATURDAY...North to northeast winds 15 to 20 knots. Seas 3 to 4
feet. Nearshore waters choppy.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 4
feet. Nearshore waters choppy.

$$

GMZ052>055-072>075-121530-
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-
423 AM EST Tue Dec 12 2017

.TODAY...North winds 10 to 15 knots, becoming northwest and
increasing to near 15 knots. Seas 3 to 5 feet.
.TONIGHT...Northwest to north winds 15 to 20 knots. Seas 4 to 6
feet.
.WEDNESDAY...North winds 15 to 20 knots, decreasing to 10 to 15
knots in the afternoon. Seas 4 to 6 feet, subsiding to 3 to 5
feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...North winds near 10 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...Northwest to north winds near 10 knots. Seas 2
to 3 feet.
.FRIDAY...Northwest winds 10 to 15 knots, increasing to near 15
knots in the afternoon. Seas 2 to 4 feet, building to 3 to 5 feet.
Isolated showers.
.FRIDAY NIGHT...West to northwest winds 15 to 20 knots, becoming
north and increasing to near 20 knots. Seas 4 to 5 feet, building
to 5 to 7 feet. Isolated showers.
.SATURDAY...North to northeast winds 15 to 20 knots. Seas 4 to 6
feet.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6
feet.

$$

GMZ033-034-121530-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
423 AM EST Tue Dec 12 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS LATE
   THIS AFTERNOON...

.TODAY...North winds near 10 knots, becoming northwest and
increasing to 15 to 20 knots late this afternoon. Seas 3 to 5
feet.
.TONIGHT...Northwest to north winds 15 to 20 knots. Seas 4 to 6
feet. Isolated showers.
.WEDNESDAY...North winds 15 to 20 knots, decreasing to 10 to 15
knots in the afternoon. Seas 4 to 6 feet, subsiding to 3 to 5
feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...North winds near 10 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...Northwest to north winds near 10 knots. Seas 2
to 3 feet.
.FRIDAY...Northwest winds 10 to 15 knots, increasing to near 15
knots in the afternoon. Seas 2 to 4 feet, building to 3 to 5 feet.
Isolated showers.
.FRIDAY NIGHT...West to northwest winds 15 to 20 knots, becoming
north and increasing to near 20 knots. Seas 4 to 6 feet. Isolated
showers.
.SATURDAY...North to northeast winds 15 to 20 knots. Seas 4 to 6
feet.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5
feet.

$$

APA



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.