505
FZUS52 KKEY 170230
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1030 PM EDT Mon Sep 16 2024

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.

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.

GMZ005-170830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 PM EDT Mon Sep 16 2024

.SYNOPSIS...Light and generally variable breezes will continue
through Saturday across the Florida Keys coastal waters. Winds
and seas will be elevated in and around thunderstorms,
particularly on Tuesday and Wednesday, though background winds
will remain light and variable. Northerly swell generated by
Potential Tropical Cyclone Eight currently centered across the
Carolina will linger through Tuesday and Wednesday. This
disturbance will deepen into an upper level trough and slowly
slide south towards the Florida Peninsula through Saturday.
Unpredictability in the movement of this trough means confidence
in the extended forecast is very low.

The Approximate Shoreward Edge of the Gulf Stream as
of September 10...

47 NM South of Dry Tortugas Light...on Loggerhead Key.
27 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
19 NM South of Looe Key...off Big Pine Key.
18 NM South of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 4 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-170830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 PM EDT Mon Sep 16 2024

.OVERNIGHT...Variable winds near 5 knots. Bay waters smooth.
Scattered showers and isolated thunderstorms.
.TUESDAY...Southeast winds near 5 knots, becoming variable. Bay
waters smooth. Numerous showers and scattered thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Bay
waters smooth to a light chop. Numerous showers and scattered
thunderstorms.
.WEDNESDAY...East to southeast winds near 5 knots. Bay waters
smooth. Numerous showers and scattered thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Bay
waters smooth. Scattered showers and thunderstorms.
.THURSDAY...Variable winds near 5 knots, becoming northeast to
east. Bay waters smooth. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...Variable winds near 5 knots. Bay waters smooth.
Scattered showers and isolated thunderstorms.
.FRIDAY...West to northwest winds near 5 knots, becoming variable.
Bay waters smooth. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.SATURDAY...Northeast to east winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 5 knots. Bay
waters smooth. Scattered showers and isolated thunderstorms.

$$

GMZ032-035-170830-
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-
1030 PM EDT Mon Sep 16 2024

.OVERNIGHT...Variable near 5 knots, becoming east to southeast.
Seas 1 foot or less. Nearshore waters smooth. Scattered showers
and isolated thunderstorms.
.TUESDAY...Southeast winds near 5 knots, becoming east. Seas 1
foot or less. Nearshore waters smooth. Numerous showers and
scattered thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth. Scattered showers and
thunderstorms.
.THURSDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.FRIDAY...Northwest to north winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT AND SATURDAY...Northeast to east winds near 5
knots. Seas 1 foot or less. Nearshore waters smooth. Scattered
showers and isolated thunderstorms.
.SATURDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
building to around 1 foot. Nearshore waters smooth to a light
chop. Scattered showers and isolated thunderstorms.

$$

GMZ042>044-170830-
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-
1030 PM EDT Mon Sep 16 2024

.OVERNIGHT...Variable winds near 5 knots, becoming east to
southeast. Seas 1 foot or less. Nearshore waters smooth. Scattered
showers and isolated thunderstorms.
.TUESDAY...East to southeast winds near 5 knots, becoming variable.
Seas 1 foot or less. Nearshore waters smooth. Numerous showers
and scattered thunderstorms.
.TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Scattered showers and
thunderstorms.
.THURSDAY...Variable winds near 5 knots, becoming northeast to
east. Seas 1 foot or less. Nearshore waters smooth. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT AND FRIDAY...Variable winds near 5 knots. Seas 1
foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.SATURDAY...Northeast winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East to southeast winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.

$$

GMZ052>055-072>075-170830-
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-
1030 PM EDT Mon Sep 16 2024

.OVERNIGHT...Variable winds near 5 knots, becoming east to
southeast. Seas around 1 foot, except 1 to 2 feet off the Upper
Keys due to northerly swell. Scattered showers and isolated
thunderstorms.
.TUESDAY...East to southeast winds near 5 knots, becoming north
to northeast in the afternoon. Seas around 1 foot, except building
to 1 to 2 feet off the Upper Keys due to northerly swell. Wave Detail:
East 1 foot at 3 seconds. Numerous showers and scattered
thunderstorms.
.TUESDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east to southeast. Seas 1 to 2 feet. Wave Detail: Northeast to
east 2 feet at 3 seconds. Numerous showers and scattered
thunderstorms.
.WEDNESDAY...Southeast winds near 5 knots, becoming variable.
Seas subsiding to around 1 foot. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT...Variable winds near 5 knots, becoming east.
Seas around 1 foot. Scattered showers and thunderstorms.
.THURSDAY...North to northeast winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds near 5 knots, becoming
variable. Seas around 1 foot. Scattered showers and isolated
thunderstorms.
.FRIDAY...Northwest to north winds near 5 knots. Seas around 1
foot. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...North to northeast winds near 5 knots, becoming
variable. Seas around 1 foot. Scattered showers and isolated
thunderstorms.
.SATURDAY...Variable winds winds near 5 knots, becoming northeast
to east. Seas around 1 foot. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-170830-
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-
1030 PM EDT Mon Sep 16 2024

.OVERNIGHT...Northeast winds near 5 knots, becoming east. Seas 1
foot or less. Wave Detail: Northwest 1 foot at 4 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY...Southeast winds near 5 knots. Seas 1 foot or less.
Scattered showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds near 5 knots. Seas 1 foot or
less. Wave Detail: East to southeast 1 foot at 2 seconds.
Scattered showers and thunderstorms.
.WEDNESDAY...East to southeast winds near 5 knots, becoming
variable. Seas 1 foot or less. Scattered showers and
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Seas 1
foot or less. Scattered showers and thunderstorms.
.THURSDAY...North to northeast winds near 5 knots. Seas 1 foot or
less. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Scattered showers and isolated thunderstorms.
.FRIDAY...North winds near 5 knots. Seas 1 foot or less.
Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...North to northeast winds near 5 knots. Seas
1 foot or less. Scattered showers and isolated thunderstorms.
.SATURDAY...Northeast winds near 5 knots. Seas 1 foot or less.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.

$$