716
FZUS52 KKEY 300245
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1045 PM EDT Mon Sep 29 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.

GMZ005-301445-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1045 PM EDT Mon Sep 29 2025

.SYNOPSIS...Tropical Storm Imelda, located east of the northeast
coast of Florida, will continue to move slowly northward, then
make a sharp eastward turn Tuesday into the west-central North
Atlantic. Moderate to fresh northwesterly breezes overnight and
Tuesday will slacken by Tuesday night. High pressure over the
Eastern Seaboard will slowly slide eastward into the western North
Atlantic, with mainly gentle northwesterly breezes eventually
veering to the northeast to east for the middle to latter part of
the work week.

The Approximate Shoreward Edge of the Gulf Stream as of September
24...

53 NM South of Dry Tortugas Light...on Loggerhead Key.
37 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
37 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
22 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
15 NM Southeast of Molasses Reef Light...off Key Largo.
 6 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.

$$

GMZ031-301445-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1045 PM EDT Mon Sep 29 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...West to northwest winds 15 to 20 knots. Bay waters
choppy. Isolated showers and thunderstorms.
.TUESDAY...West to northwest winds 15 to 20 knots, decreasing to
near 15 knots. Bay waters choppy, becoming a moderate chop.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...West to northwest winds near 15 knots, becoming
northwest and decreasing to 10 to 15 knots. Bay waters a moderate
chop, becoming a light to moderate chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...Northwest winds 10 to 15 knots. Bay waters a light
to moderate chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 10 knots. Bay
waters a light chop. Scattered showers and isolated thunderstorms.
.THURSDAY...North to northeast winds near 10 knots. Bay waters a
light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots,
increasing to near 15 knots. Bay waters a light to moderate chop,
becoming a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds near 15 knots.
Bay waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-301445-
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-
1045 PM EDT Mon Sep 29 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...West to northwest winds 15 to 20 knots. Seas
2 to 3 feet. Nearshore waters choppy. Isolated showers and
thunderstorms.
.TUESDAY...West to northwest winds 15 to 20 knots, decreasing to
near 15 knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming
a moderate chop. Isolated showers and thunderstorms.
.TUESDAY NIGHT...Northwest winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet, subsiding to around 2 feet.
Nearshore waters a moderate chop, becoming a light to moderate
chop. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Northwest to north winds 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots. Seas
around 1 foot, except 1 to 2 feet west of the Marquesas Keys.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.THURSDAY...North to northeast winds near 10 knots. Seas around 1
foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore
waters a light chop. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots,
increasing to near 15 knots. Seas building to 1 to 2 feet, except
building to 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a light to moderate chop, becoming a moderate chop.
Scattered showers and isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds near 15 knots.
Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...East winds decreasing to 10 to 15 knots. Seas 1 to 2
feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters becoming a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 1
foot. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-301445-
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-
1045 PM EDT Mon Sep 29 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...West to northwest winds 15 to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
Isolated showers and thunderstorms.
.TUESDAY...West to northwest winds 15 to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots, decreasing to 10
to 15 knots. Seas subsiding to around 2 feet. Nearshore waters
choppy, becoming a light to moderate chop. Scattered showers and
isolated thunderstorms.
.WEDNESDAY...Northwest winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 10 knots. Seas 1
to 2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...North to northeast winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots,
becoming northeast to east and increasing to near 15 knots. Seas 1
to 2 feet, building to around 2 feet. Nearshore waters a light to
moderate chop, becoming a moderate chop. Scattered showers and
isolated thunderstorms.
.FRIDAY...Northeast to east winds near 15 knots. Seas 2 to
3 feet. Nearshore waters a moderate chop. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...East winds decreasing to 10 to 15 knots. Seas
subsiding to around 2 feet. Nearshore waters becoming a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.

$$

GMZ052-072-301445-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
1045 PM EDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT...

.TONIGHT...West to northwest winds near 20 knots. Seas 4 to
7 feet, occasionally to 9 feet. Wave Detail: West 4 feet at
5 seconds and north to northeast 4 feet at 9 seconds. Scattered
showers and isolated thunderstorms.
.TUESDAY...West to northwest winds near 20 knots. Seas 4 to 7
feet, occasionally to 9 feet. Wave Detail: West 4 feet at 5
seconds and north to northeast 3 feet at 9 seconds. Isolated
showers and thunderstorms.
.TUESDAY NIGHT...West to northwest winds 15 to 20 knots, becoming
northwest to north and decreasing to near 15 knots. Seas 4 to 6
feet, occasionally to 8 feet. Wave Detail: West 5 feet at 5
seconds and north to northeast 3 feet at 10 seconds. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...Northwest to north winds 10 to 15 knots, decreasing
to near 10 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 10 knots. Seas
3 to 5 feet, occasionally to 6 feet due to northeast swell.
Scattered showers and isolated thunderstorms.
.THURSDAY...North to northeast winds near 10 knots. Seas 3 to 5
feet, occasionally to 6 feet due to northeast swell. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 3
to 5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...Northeast to east winds near 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East winds near 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 3 to 5
feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...Southeast winds near 15 knots. Seas 1 to
2 feet. Scattered showers and isolated thunderstorms.

$$

GMZ053>055-073>075-301445-
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 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-
1045 PM EDT Mon Sep 29 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...West to northwest winds 15 to 20 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: West to northwest 3
feet at 5 seconds and northeast to east 2 feet at 8 seconds.
Isolated showers and thunderstorms.
.TUESDAY...West to northwest winds 15 to 20 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: West to northwest 3
feet at 5 seconds and northeast to east 1 foot at 8 seconds.
Isolated showers and thunderstorms.
.TUESDAY NIGHT...West to northwest winds 15 to 20 knots, becoming
northwest and decreasing to 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet, subsiding to 2 to 4 feet. Wave Detail:
West to northwest 3 feet at 5 seconds and northeast to east 1 foot
at 9 seconds. Isolated showers and thunderstorms.
.WEDNESDAY...Northwest winds 10 to 15 knots, decreasing to near 10
knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...Northwest to north winds near 10 knots. Seas 2
to 3. feet. Scattered showers and isolated thunderstorms.
.THURSDAY...North to northeast winds near 10 knots. Seas 2 to 3
feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast winds near 10 knots, becoming
northeast to east and increasing to 10 to 15 knots. Seas 2 to 4
feet. Scattered showers and isolated thunderstorms.
.FRIDAY...Northeast to east winds 10 to 15 knots. Seas 2 to
4 feet. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to 4
feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3
feet. Scattered showers and isolated thunderstorms.

$$

GMZ033-034-301445-
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-
1045 PM EDT Mon Sep 29 2025

.TONIGHT...Northwest winds near 15 knots. Seas 2 to 4 feet. Wave
Detail: Northwest 3 feet at 5 seconds. Isolated showers and
thunderstorms.
.TUESDAY...Northwest winds near 15 knots. Seas 2 to 4 feet. Wave
Detail: West to northwest 3 feet at 5 seconds. Isolated showers
and thunderstorms.
.TUESDAY NIGHT...Northwest winds near 15 knots, becoming
northwest to north and decreasing to 10 to 15 knots. Seas 2 to 4
feet, subsiding to 2 to 3 feet. Wave Detail: Northwest 3 feet at
5 seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY...Northwest to north winds near 10 knots. Seas around 2
feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...North to northeast winds near 10 knots. Seas
around 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming
northeast to east and increasing to near 15 knots. Seas 2 to 3
feet. Scattered showers and isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...Northeast to east winds near 15 knots.
Seas 2 to 4 feet. Scattered showers and isolated thunderstorms.
.SATURDAY...East winds decreasing to 10 to 15 knots. Seas
subsiding to 2 to 3 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
around 2 feet. Scattered showers and isolated thunderstorms.

$$