Coastal Waters Forecast
Issued by NWS Key West, FL

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734
FZUS52 KKEY 170835 CCA
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
418 AM EDT Mon Jun 17 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.

GMZ005-171500-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
418 AM EDT Mon Jun 17 2024

.SYNOPSIS...Strong surface high pressure centered off the New
England coast working in tandem with falling pressures over the
Yucatan Peninsula and the Bay of Campeche is expected to result in
moderate to fresh breezes today through mid week. An area of low
pressure may develop mid week a few hundred miles north of the
central Bahamas towards mid week and move towards the north to
central Florida coastline. This may result in a brief slackening
of breezes before high pressure takes control again resulting in
freshening east to southeasterly breezes late week.

The Approximate Shoreward Edge of the Gulf Stream as of June
12...

66 NM South of Dry Tortugas Light...on Loggerhead Key.
24 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
17 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
8  NM South of Sombrero Key Light...off Marathon.
4  NM South of Alligator Reef Light...off Islamorada.
2  NM South of Molasses Reef Light...off Key Largo.

Gulf Stream Information Courtesy of the National Weather Service in
Key West.

$$

GMZ031-171500-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...Northeast to east winds near 15 knots, becoming east
near 20 knots late this morning and afternoon. Bay waters a
moderate chop, becoming rough. Scattered showers and isolated
thunderstorms.
.TONIGHT...East winds near 20 knots, decreasing to 15 to 20
knots. Bay waters rough, becoming choppy. Scattered showers and
isolated thunderstorms.
.TUESDAY THROUGH WEDNESDAY...East winds 15 to 20 knots. Bay
waters choppy. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, decreasing to near
15 knots. Bay waters choppy, becoming a moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds near 15 knots. Bay waters a moderate
chop. Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds increasing to 15 to 20 knots.
Bay waters becoming choppy. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Bay
waters choppy. Scattered showers and isolated thunderstorms.

$$

GMZ032-171500-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...Northeast to east winds near 15 knots, becoming east near
20 knots late this morning and afternoon. Seas 1 to 2 feet,
building to 2 to 3 feet. Nearshore waters a moderate chop,
becoming rough. Scattered showers and isolated thunderstorms.
.TONIGHT...East winds near 20 knots. Seas 2 to 3 feet. Nearshore
waters rough. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds near 20 knots. Seas 2 to 3 feet. Nearshore
waters rough. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 1 to 3 feet,
subsiding to 1 to 2 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 to 20 knots, increasing to near 20
knots. Seas building to 1 to 3 feet. Nearshore waters choppy,
becoming rough. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 1 to 3 feet. Nearshore waters rough, becoming
choppy. Scattered showers and isolated thunderstorms.
.THURSDAY...East winds near 15 to 20 knots. Seas 1 to 2 feet.
Nearshore waters choppy. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East winds near 15 knots. Seas 1 to 2 feet.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds increasing to 15 to 20 knots.
Seas 1 to 2 feet. Nearshore waters becoming choppy. Scattered
showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 1 to
2 feet. Nearshore waters choppy. Scattered showers and isolated
thunderstorms.

$$

GMZ035-171500-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots. Seas 2 to 3 feet, except 3 to
5 feet, occasionally to 6 feet west of the Marquesas Keys.
Nearshore waters rough. Scattered showers and isolated
thunderstorms.
.TONIGHT AND TUESDAY...East winds near 20 knots. Seas 2 to 3
feet, except 4 to 5 feet, occasionally to 6 feet west of the
Marquesas Keys. Nearshore waters rough. Scattered showers and
isolated thunderstorms.
.TUESDAY NIGHT...East winds near 20 knots, decreasing to 15 to 20
knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5
feet west of the Marquesas Keys. Nearshore waters rough, becoming
choppy. Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 to 20 knots, increasing to near 20
knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5
feet west of the Marquesas Keys. Nearshore waters choppy, becoming
rough. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5
feet west of the Marquesas Keys. Nearshore waters choppy.
Scattered showers and isolated thunderstorms.
.THURSDAY AND THURSDAY NIGHT...East winds 15 to 20 knots. Seas 2
to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the
Marquesas Keys. Nearshore waters choppy. Scattered showers and
isolated thunderstorms.
.FRIDAY AND FRIDAY NIGHT...East to southeast winds 15 to 20
knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5
feet west of the Marquesas Keys. Nearshore waters a moderate chop,
becoming to rough in the afternoon. Scattered showers and
isolated thunderstorms.

$$

GMZ042-043-171500-
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-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...Northeast to east winds near 15 knots, becoming east
near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore
waters choppy, becoming rough. Scattered showers and isolated
thunderstorms.
.TONIGHT...East winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Nearshore waters rough. Scattered showers
and isolated thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. Nearshore waters choppy.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 to 20 knots, increasing to near 20
knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters
choppy, becoming rough. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...Northeast to east winds near 20 knots,
becoming east 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5
feet. Nearshore waters rough, becoming choppy. Scattered showers
and isolated thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds increasing to 15 to 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters
becoming choppy. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.

$$

GMZ044-171500-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots. Seas 2 to 4 feet, occasionally
to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of
Cosgrove Shoal Light. Nearshore waters rough. Isolated showers
and thunderstorms.
.TONIGHT THROUGH WEDNESDAY...East winds near 20 knots. Seas 3 to
5 feet, occasionally to 6 feet, except 4 to 6 feet, occasionally
to 8 feet west of Cosgrove Shoal Light. Nearshore waters rough.
Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds near 20 knots, decreasing to 15 to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 3 to 5
feet, occasionally to 6 feet west of Cosgrove Shoal Light.
Nearshore waters rough, becoming choppy. Scattered showers and
isolated thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters choppy. Scattered
showers and isolated thunderstorms.
.THURSDAY NIGHT...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Nearshore waters a moderate chop.
Scattered showers and isolated thunderstorms.
.FRIDAY...East to southeast winds increasing to 15 to 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters
becoming choppy. Scattered showers and isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally
to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy.
Scattered showers and isolated thunderstorms.

$$

GMZ052-053-072-073-171500-
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 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-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...Northeast to east winds near 15 knots, becoming east near
20 knots by the late morning and afternoon. Seas 3 to 4 feet,
building to 4 to 6 feet occasionally to 7 feet. Wave Detail: East
3 feet at 5 seconds and north to northeast 2 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.TONIGHT...East winds near 20 knots, decreasing to 15 to 20
knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast 4 feet at 5 seconds. Scattered showers and isolated
thunderstorms.
.TUESDAY THROUGH WEDNESDAY...East winds 15 to 20 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast to east 4
feet at 6 seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT AND THURSDAY...East winds 15 to 20 knots. Seas 4
to 5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Seas
3 to 4 feet, occasionally to 5 feet. Scattered showers and
isolated thunderstorms.
.FRIDAY...East winds increasing to 15 to 20 knots. Seas 3 to 5
feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 4 to
5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ054-055-074-075-171500-
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 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-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots. Seas 4 to 6 feet, occasionally
to 8 feet. Wave Detail: East 5 feet at 6 seconds. Isolated
showers and thunderstorms.
.TONIGHT...East winds 20 to 25 knots, becoming east to southeast
near 20 knots after midnight. Seas 5 to 7 feet, occasionally to 9
feet. Wave Detail: East 6 feet at 6 seconds. Scattered showers
and isolated thunderstorms.
.TUESDAY THROUGH WEDNESDAY...East winds 15 to 20 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 6
seconds. Scattered showers and isolated thunderstorms.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Numerous showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds near 15 knots. Seas 4
to 5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY...East to southeast winds increasing to 15 to 20 knots.
Seas 3 to 6 feet, occasionally to 7 feet. Scattered showers and
isolated thunderstorms.
.FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 5 to
6 feet, occasionally to 8 feet. Scattered showers and isolated
thunderstorms.

$$

GMZ033-034-171500-
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-
418 AM EDT Mon Jun 17 2024

...SMALL CRAFT ADVISORY IN EFFECT...

.TODAY...East winds near 20 knots. Seas 3 to 5 feet, occasionally
to 6 feet. Wave Detail: Northeast to east 3 feet at 4 seconds.
Scattered showers and isolated thunderstorms.
.TONIGHT...East winds 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 4 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY...East winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds.
Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT...East winds near 20 knots, decreasing to 15 to 20
knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered
showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.WEDNESDAY NIGHT...East winds near 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY AND THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3
to 5 feet, occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.FRIDAY AND FRIDAY NIGHT...East to southeast winds 15 to 20
knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers
and isolated thunderstorms.

$$