809
FZUS52 KKEY 231530
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1030 AM EST Sun Feb 23 2025

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.

GMZ005-232130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1030 AM EST Sun Feb 23 2025

.SYNOPSIS...A weak high will slide east across the Southeastern
United States today, resulting in gentle to moderate breezes. An
area of weak low pressure is expected to develop over the
northwestern Gulf later today and tonight. As the low moves east,
the potential exists for varying breezes, especially Monday with
northwest to north breezes anticipated Tuesday and Tuesday night.
The threat for thunderstorms is increasing, especially Monday
afternoon and night. Winds and seas will be higher in and around
thunderstorms.

The Approximate Shoreward Edge of the Gulf Stream as of February
19...

22 NM South of Dry Tortugas Light...on Loggerhead Key.
 6 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 2 NM South of Sand Key Light...off Key West.
 6 NM South of Looe Key...off Big Pine Key.
 7 NM South of Sombrero Key Light...off Marathon.
 7 NM Southeast of Alligator Reef Light...off Islamorada.
 3 NM Southeast of Molasses Reef Light...off Key Largo.
 1 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in Key
West based on products from the Real Time Ocean Forecast System and
NASA SPoRT.

$$

GMZ031-232130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1030 AM EST Sun Feb 23 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
becoming east near 15 knots late. Bay waters a light to moderate
chop, becoming a moderate chop.
.TONIGHT...East to southeast winds near 15 knots. Bay waters a
moderate chop.
.MONDAY...Southeast to south winds near 15 knots. Bay waters a
moderate chop. Scattered showers in the morning, then widespread
showers and isolated thunderstorms in the afternoon. Bay waters
rough and winds higher in and around thunderstorms.
.MONDAY NIGHT...South to southwest winds near 15 knots, decreasing
to 10 to 15 knots. Bay waters a moderate chop, becoming a light
to moderate chop. Widespread showers and scattered thunderstorms.
Bay waters rough and winds higher in and around thunderstorms.
.TUESDAY...West winds 10 to 15 knots, becoming west to northwest.
Bay waters a light to moderate chop. Scattered showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots,
becoming north to northeast after midnight. Bay waters a light to
moderate chop.
.WEDNESDAY...Northeast winds near 10 knots, becoming east in the
afternoon. Bay waters a light chop.
.WEDNESDAY NIGHT...East winds near 10 knots. Bay waters a light
chop.
.THURSDAY...East to southeast winds near 10 knots, becoming
southwest. Bay waters a light chop.
.THURSDAY NIGHT...West to northwest winds 10 to 15 knots. Bay
waters a light to moderate chop.

$$

GMZ032-035-232130-
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 AM EST Sun Feb 23 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
becoming east near 15 knots late. 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 a moderate chop.
.TONIGHT...East to southeast winds near 15 knots. Seas 1 to
2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop. Isolated showers.
.MONDAY...Southeast winds near 15 knots, becoming south to
southwest 15 to 20 knots. Seas 1 to 2 feet, building to 1 to 3
feet. West of the Marquesas Keys, seas 2 to 3 feet, building to 3
to 4 feet. Nearshore waters a moderate chop, becoming choppy.
Scattered showers and isolated thunderstorms in the morning, then
widespread showers and isolated thunderstorms in the afternoon.
Winds and seas higher in and around thunderstorms.
.MONDAY NIGHT...Southwest winds near 15 knots, becoming southwest
to west 10 to 15 knots. Seas 1 to 2 feet, except around 3 feet
west of the Marquesas Keys. Nearshore waters a moderate chop,
becoming a light to moderate chop. Widespread showers and
scattered thunderstorms. Winds and seas higher in and around
thunderstorms.
.TUESDAY...West winds 10 to 15 knots, becoming west to northwest
near 15 knots. Seas building to 2 to 3 feet, except building to 3
to 4 feet, occasionally to 5 feet west of the Marquesas Keys.
Nearshore waters a light to moderate chop, becoming a moderate
chop. Isolated showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots,
becoming north to northeast. Seas 2 to 3 feet. Nearshore waters a
light to moderate chop.
.WEDNESDAY...Northeast to east winds decreasing to near 10 knots.
Seas 1 to 2 feet. Nearshore waters becoming a light chop.
.WEDNESDAY NIGHT...East winds near 10 knots. Seas around 1 foot,
except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a
light chop.
.THURSDAY...Southeast winds near 10 knots, becoming southwest to
west. Seas around 1 foot. Nearshore waters a light chop.
.THURSDAY NIGHT...West to northwest winds 10 to 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.

$$

GMZ042>044-232130-
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 AM EST Sun Feb 23 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
becoming east near 15 knots late. Seas 2 to 3 feet. Nearshore
waters a light to moderate chop, becoming a moderate chop.
.TONIGHT...East to southeast winds near 15 knots. Seas 2 to
3 feet, except 3 to 4 feet west of Cosgrove Shoal Light.
Nearshore waters a moderate chop. Isolated showers.
.MONDAY...Southeast to south winds near 15 knots, becoming south
to southwest 15 to 20 knots in the afternoon. Seas 2 to 3 feet,
except 3 to 4 feet west of Cosgrove Shoal Light. Nearshore waters
a moderate chop. Scattered showers and isolated thunderstorms in
the morning, then widespread showers and isolated thunderstorms in
the afternoon. Winds and seas higher in and around thunderstorms.
.MONDAY NIGHT...Southwest winds 15 to 20 knots, becoming southwest
to west 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters
choppy, becoming a light to moderate chop. Widespread showers and
scattered thunderstorms. Winds and seas higher in and around
thunderstorms.
.TUESDAY...West to northwest winds increasing to near 15 knots.
Seas 2 to 3 feet. Nearshore waters becoming a moderate chop.
Isolated showers.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
north to northeast. Seas 1 to 2 feet, except around 3 feet west
of Cosgrove Shoal Light. Nearshore waters a light to moderate
chop.
.WEDNESDAY...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Nearshore waters a light chop.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots, becoming
east to southeast. Seas 1 to 2 feet. Nearshore waters a light
chop.
.THURSDAY...Southeast winds near 10 knots, becoming southwest to
west. Seas 1 to 2 feet. Nearshore waters a light chop.
.THURSDAY NIGHT...West to northwest winds 10 to 15 knots. Seas
1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal
Light. Nearshore waters a light to moderate chop.

$$

GMZ052>055-072>075-232130-
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 AM EST Sun Feb 23 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
becoming east near 15 knots. Seas 3 to 4 feet, occasionally to 5
feet. Wave Detail: Northeast to east 4 feet at 6 seconds.
.TONIGHT...East to southeast winds near 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
5 seconds. Isolated showers.
.MONDAY...Southeast to south winds near 15 knots, increasing to 15
to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Southeast 4 feet at 5 seconds. Scattered showers and isolated
thunderstorms in the morning, then widespread showers and isolated
thunderstorms in the afternoon. Winds and seas higher in and
around thunderstorms.
.MONDAY NIGHT...South to southwest winds 15 to 20 knots, becoming
southwest to west near 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Widespread showers and scattered thunderstorms. Winds
and seas higher in and around thunderstorms.
.TUESDAY...West to northwest winds near 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...Northwest to north winds 10 to 15 knots, becoming
north to northeast. Seas 2 to 4 feet, occasionally to 5 feet.
.WEDNESDAY...Northeast to east winds near 10 knots. Seas 2 to 3
feet.
.WEDNESDAY NIGHT...Northeast to east winds near 10 knots, becoming
east to southeast. Seas subsiding to around 2 feet.
.THURSDAY...Southeast winds near 10 knots, becoming southwest.
Seas around 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 15 knots. Seas building to
2 to 3 feet.

$$

GMZ033-034-232130-
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 AM EST Sun Feb 23 2025

.THIS AFTERNOON...Northeast to east winds 10 to 15 knots,
becoming east to southeast late. Seas 1 to 3 feet. Wave Detail:
North to northeast 2 feet at 5 seconds.
.TONIGHT...East to southeast winds 10 to 15 knots, becoming
southeast 15 to 20 knots after midnight. Seas 1 to 3 feet,
building to 2 to 4 feet, occasionally to 5 feet. Wave Detail:
East to southeast 3 feet at 4 seconds and northwest to north 1
foot at 4 seconds. Isolated showers.
.MONDAY...Southeast to south winds 15 to 20 knots, becoming south
to southwest in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: South 4 feet at 5 seconds. Widespread
showers and isolated thunderstorms in the morning, then
widespread showers and scattered thunderstorms in the afternoon.
Winds and seas higher in and around thunderstorms.
.MONDAY NIGHT...Southwest winds near 15 knots, becoming southwest
to west 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Numerous showers and scattered thunderstorms. Winds and seas
higher in and around thunderstorms.
.TUESDAY...West to northwest winds 10 to 15 knots, becoming
northwest near 15 knots. Seas 2 to 4 feet, occasionally to 5
feet. Isolated showers.
.TUESDAY NIGHT...Northwest to north winds near 15 knots, becoming
north to northeast 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.WEDNESDAY...Northeast winds 10 to 15 knots, decreasing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2
feet.
.WEDNESDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming
east near 10 knots. Seas 1 to 2 feet.
.THURSDAY...East to southeast winds near 10 knots, becoming
southwest to west in the afternoon. Seas 1 to 2 feet.
.THURSDAY NIGHT...West to northwest winds 10 to 15 knots,
becoming northwest 15 to 20 knots. Seas building to 2 to 3 feet.
Isolated showers.

$$