Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 221424
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1024 AM EDT Mon Apr 22 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.

GMZ005-222030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1024 AM EDT Mon Apr 22 2024

.SYNOPSIS...A weak front will move through the Florida Keys
coastal waters this afternoon, with light to gentle southwest to
west breezes becoming moderate to fresh from the northwest. Fresh
to strong breezes will veer from the northwest this evening to
the northeast by Tuesday morning, then moderate northeast to east
breezes will prevail from late Tuesday night through Thursday.
Strengthening high pressure over the western North Atlantic will
bring fresh to strong easterly breezes to the Keys marine zones
beginning Friday,lasting into the weekend.

The Approximate Shoreward Edge of the Gulf Stream is currently
unavailable.

$$

GMZ031-222030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1024 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots, becoming
west to northwest and increasing to 10 to 15 knots. Bay waters
smooth to a light chop, becoming a light to moderate chop.
Isolated showers and thunderstorms developing.
.TONIGHT...Northwest to north winds near 15 knots, becoming
northeast 15 to 20 knots after midnight. Bay waters a moderate
chop, becoming choppy. Isolated showers and thunderstorms early in
the evening, then isolated showers.
.TUESDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots. Bay waters choppy, becoming a
moderate chop.
.WEDNESDAY...East winds near 15 knots. Bay waters a moderate
chop.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay
waters a light to moderate chop.
.THURSDAY AND THURSDAY NIGHT...Northeast to east winds near 15
knots. Bay waters a moderate chop.
.FRIDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy.
.FRIDAY NIGHT...East winds near 20 knots. Bay waters rough.

$$

GMZ032-035-222030-
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-
1024 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots, becoming
northwest and increasing to near 15 knots. Seas building to 1 to
2 feet. Nearshore waters smooth to a light chop, becoming a
moderate chop. Isolated showers developing.
.TONIGHT...Northwest to north winds 15 to 20 knots, becoming
northeast after midnight. Seas 2 to 3 feet, except 3 to 4 feet
west of the Marquesas Keys. Nearshore waters choppy.
.TUESDAY...Northeast to east winds 15 to 20 knots. Seas 2 to
3 feet, except 3 to 4 feet west of the Marquesas Keys. Nearshore
waters choppy.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters
choppy.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop.
.THURSDAY AND THURSDAY NIGHT...East winds near 15 knots. Seas 1
to 2 feet. Nearshore waters a moderate chop.
.FRIDAY...East winds 15 to 20 knots. Seas building to 2 to 3
feet, except building to 3 to 4 feet west of the Marquesas Keys.
Nearshore waters choppy.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 2 to 4 feet,
except 4 to 5 feet west of the Marquesas Keys. Nearshore waters
very rough.

$$

GMZ042-222030-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
1024 AM EDT Mon Apr 22 2024

...SMALL CRAFT ADVISORY MAY BE REQUIRED TONIGHT...

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots,
becoming west to northwest and increasing to 10 to 15 knots. Seas
building to 1 to 2 feet. Nearshore waters smooth to a light chop,
becoming a light to moderate chop. Isolated showers and
thunderstorms developing.
.TONIGHT...Northwest to north winds near 15 knots, becoming
northeast near 20 knots after midnight. Seas 1 to 2 feet, building
to 2 to 3 feet. Nearshore waters a moderate chop, becoming rough.
Isolated showers and thunderstorms early in the evening, then
isolated showers.
.TUESDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
Nearshore waters choppy.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots after midnight. Seas 2 to 3 feet.
Nearshore waters choppy, becoming a moderate chop.
.WEDNESDAY...Northeast to east winds near 15 knots. Seas 2 to 3
feet. Nearshore waters a moderate chop.
.WEDNESDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
.THURSDAY AND THURSDAY NIGHT...Northeast to east winds near 15
knots. Seas 2 to 3 feet. Nearshore waters a moderate chop.
.FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore
waters choppy.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet.
Nearshore waters very rough.

$$

GMZ043-044-222030-
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-
1024 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots, becoming
northwest and increasing to near 15 knots. Seas building to 1 to
2 feet. Nearshore waters smooth to a light chop, becoming a
moderate chop. Isolated showers developing.
.TONIGHT...Northwest to north winds 15 to 20 knots, becoming
northeast after midnight. Seas 1 to 2 feet, except 2 to 4 feet
west of Cosgrove Shoal Light. Nearshore waters choppy.
.TUESDAY...Northeast to east winds 15 to 20 knots. Seas 2 to 4
feet. Nearshore waters choppy.
.TUESDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots after midnight. Seas 2 to 4 feet, subsiding to 2 to 3 feet.
Nearshore waters choppy, becoming a moderate chop.
.WEDNESDAY...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Northeast to east winds
near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate
chop.
.FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore
waters choppy.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet.
Nearshore waters very rough.

$$

GMZ052-072-222030-
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-
1024 AM EDT Mon Apr 22 2024

...SMALL CRAFT ADVISORY MAY BE REQUIRED TONIGHT...

.THIS AFTERNOON....Southwest to west winds 5 to 10 knots,
becoming west to northwest and increasing to 10 to 15 knots. Seas
building to 2 to 3 feet. Isolated showers and thunderstorms
developing.
.TONIGHT...Northwest to north winds near 15 knots, becoming
northeast near 20 knots after midnight. Seas 2 to 3 feet, building
to 3 to 5 feet. Isolated showers and thunderstorms in the
evening, then isolated showers.
.TUESDAY...Northeast winds near 20 knots, decreasing to 15 to 20
knots. Seas 4 to 6 feet. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots after midnight. Seas 4 to 6 feet,
subsiding to 3 to 5 feet. Isolated showers.
.WEDNESDAY...Northeast to east winds near 15 knots. Seas 3 to 4
feet.
.WEDNESDAY NIGHT AND THURSDAY...Northeast to east winds near 15
knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
4 to 5 feet.
.FRIDAY...Northeast to east winds 15 to 20 knots. Seas 4 to 6
feet.
.FRIDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 5 to
7 feet.

$$

GMZ053>055-073>075-222030-
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-
1024 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots, becoming
northwest and increasing to near 15 knots. Seas building to 2 to 3
feet. Isolated showers developing.
.TONIGHT...Northwest to north winds 15 to 20 knots, becoming
northeast after midnight. Seas 2 to 4 feet. Isolated showers.
.TUESDAY...Northeast to east winds 15 to 20 knots. Seas building
to 4 to 6 feet. Isolated showers.
.TUESDAY NIGHT...Northeast to east winds 15 to 20 knots,
decreasing to near 15 knots after midnight. Seas 4 to 6 feet.
Isolated showers.
.WEDNESDAY...Northeast to east winds near 15 knots. Seas 3 to 5
feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast to east winds near 15 knots. Seas 3
to 4 feet. Isolated showers.
.THURSDAY...Northeast to east winds near 15 knots. Seas 3 to 4
feet.
.THURSDAY NIGHT...Northeast to east winds 15 to 20 knots. Seas
4 to 5 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet.

$$

GMZ033-034-222030-
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-
1024 AM EDT Mon Apr 22 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS...

.THIS AFTERNOON...Southwest to west winds 5 to 10 knots, becoming
northwest to north and increasing to 15 to 20 knots. Seas building
to 2 to 4 feet. Isolated showers and thunderstorms.
.TONIGHT...Northwest to north winds 15 to 20 knots, becoming
northeast after midnight. Seas 4 to 5 feet.
.TUESDAY...Northeast to east winds 15 to 20 knots, decreasing to
10 to 15 knots in the afternoon. Seas 4 to 5 feet, subsiding to 3
to 4 feet.
.TUESDAY NIGHT...East winds increasing to near 15 knots. Seas 2
to 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.WEDNESDAY NIGHT AND THURSDAY...East winds 10 to 15 knots. Seas 1
to 2 feet.
.THURSDAY NIGHT...East winds increasing to near 15 knots. Seas
building to 2 to 3 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet.
.FRIDAY NIGHT...East winds near 20 knots. Seas building to 4 to 6
feet.

$$

BT/CJ


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