710
FZUS52 KKEY 171434 CCA
CWFKEY

Coastal Waters Forecast for the Florida Keys...CORRECTED
National Weather Service Key West FL
1034 AM EDT Sun Aug 17 2025

...Corrected first period label of all zones to this afternoon...

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.

GMZ005-180230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1034 AM EDT Sun Aug 17 2025

.SYNOPSIS...A broad ridge stretching from the North Atlantic
westward across the Florida Peninsula will result in light to
gentle easterly breezes across the Keys coastal waters through
early this week. Rain and thunder chances will be near to
slightly below normal for this time of year.

The Approximate Shoreward Edge of the Gulf Stream as of August 14...

45 NM South of Dry Tortugas Light...on Loggerhead Key.
34 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
41 NM South of Sand Key Light...off Key West.
24 NM South of Looe Key...off Big Pine Key.
18 NM Southeast of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 5 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.

$$

GMZ031-180230-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1034 AM EDT Sun Aug 17 2025

.THIS AFTERNOON...East to southeast winds near 5 knots. Bay waters smooth.
Scattered showers and isolated thunderstorms.
.TONIGHT...East to southeast winds near 5 knots. Bay waters
smooth. Scattered showers and isolated thunderstorms.
.MONDAY...East winds near 5 knots, becoming south to southwest.
Bay waters smooth. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...Northwest to north winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northwest winds near 10 knots, decreasing to 5
to 10 knots. Bay waters a light chop, becoming smooth to a light
chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...West winds near 10 knots. Bay
waters a light chop. Scattered showers and isolated thunderstorms.
.THURSDAY...Southwest to west winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Southwest to west winds 5 to 10 knots. Bay
waters smooth to a light chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-180230-
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-
1034 AM EDT Sun Aug 17 2025

.THIS AFTERNOON...East to southeast winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.TONIGHT...East to southeast winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.MONDAY...East to southeast winds near 5 knots, becoming northwest.
Seas 1 foot or less. Nearshore waters smooth. Scattered showers
and isolated thunderstorms.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots, increasing to near 10
knots. Seas 1 foot or less, building to around 1 foot. Nearshore
waters smooth to a light chop, becoming a light chop. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...Northwest winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...West to northwest winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY NIGHT...West winds near 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...Southwest to west winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers
and isolated thunderstorms.
.THURSDAY NIGHT...Southwest winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.

$$

GMZ042>044-180230-
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-
1034 AM EDT Sun Aug 17 2025

.THIS AFTERNOON...East to southeast winds near 5 knots. Seas around
1 foot. Nearshore waters smooth. Scattered showers and isolated
thunderstorms.
.TONIGHT...East winds near 5 knots. Seas around 1 foot. Nearshore
waters smooth. Scattered showers and isolated thunderstorms.
.MONDAY...East winds near 5 knots, becoming northwest. Seas 1
foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. Scattered showers and
isolated thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots, increasing to near 10
knots. Seas 1 foot or less, building to around 1 foot. Nearshore
waters smooth to a light chop, becoming a light chop. Scattered
showers and isolated thunderstorms.
.TUESDAY NIGHT...Northwest winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...West winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...Southwest to west winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...Southwest to west winds 5 to 10 knots. Seas
around 1 foot. Nearshore waters smooth to a light chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-180230-
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-
1034 AM EDT Sun Aug 17 2025

.THIS AFTERNOON...East to southeast winds 5 to 10 knots. Seas 1 to 2
feet. Wave Detail: East to southeast 1 foot at 4 seconds. Scattered
showers and isolated thunderstorms.
.TONIGHT...Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: East 1 foot at 4 seconds. Isolated showers and
thunderstorms.
.MONDAY...Northeast winds near 5 knots. Seas 1 to 2 feet. Wave
Detail: East 1 foot at 3 seconds. Isolated showers and
thunderstorms.
.MONDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.TUESDAY...West to northwest winds 5 to 10 knots, increasing to
near 10 knots. Seas 1 to 2 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...West to northwest winds near 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY...West winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Southwest to west winds near 10 knots. Seas 1
to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Southwest to west winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...West to northwest winds near 5 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-180230-
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-
1034 AM EDT Sun Aug 17 2025

.THIS AFTERNOON...East to southeast winds near 5 knots. Seas 1 foot
or less. Scattered showers and isolated thunderstorms.
.TONIGHT...East to southeast winds near 5 knots. Seas 1 foot or
less. Scattered showers and isolated thunderstorms.
.MONDAY...Southeast to south winds near 5 knots, becoming
southwest to west. Seas 1 foot or less. Scattered showers and
isolated thunderstorms.
.MONDAY NIGHT...Northwest to north winds near 5 knots. Seas
1 foot or less. Scattered showers and isolated thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY...West to northwest winds near 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...West winds 5 to 10 knots. Seas around 1 foot.
Scattered showers and isolated thunderstorms.
.THURSDAY...Southwest to west winds 5 to 10 knots. Seas around
1 foot. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Southwest winds near 5 knots. Seas 1 foot or
less. Scattered showers and isolated thunderstorms.

$$