Coastal Waters Forecast
Issued by NWS Miami, FL

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919
FZUS52 KMFL 210806
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Coastal Waters Forecast for Florida
National Weather Service Miami FL
406 AM EDT Mon Sep 21 2026

Atlantic coastal waters from Jupiter Inlet to Ocean Reef out to
60 nm and Gulf coastal waters from East Cape Sable to Chokoloskee
out 20 nm and Chokoloskee to Bonita Beach out 60 nm...including the
waters of Biscayne Bay and Lake Okeechobee.

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.

AMZ600-GMZ606-212100-
406 AM EDT Mon Sep 21 2026

.Synopsis for Jupiter Inlet to Ocean Reef FL out to 60 nm and for
East Cape Sable to Bonita Beach FL out to 60 nm...

Gentle southerly winds early this week across the local waters.
Scattered thunderstorms possible each day this week which may result
in locally hazardous winds and seas.

Gulf Stream Hazards: None.

The approximate location of the west wall of the Gulf Stream as of
Sep 18, 2026.

  1 nautical miles north northeast of Fowey Rocks.
  7 nautical miles east of Port Everglades.
  6 nautical miles south southeast of Lake Worth.
  6 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ650-670-212100-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
406 AM EDT Mon Sep 21 2026

.TODAY...SW winds around 5 kt, becoming N this afternoon. Seas less
than 2 ft or less. Wave Detail: N 1 foot at 6 seconds. Intracoastal
waters smooth. A chance of showers and tstms.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 2 seconds and N 1 foot at 7 seconds. Intracoastal waters
light chop. A chance of showers and tstms.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot
at 3 seconds and NE 1 foot at 7 seconds. Intracoastal waters light
chop. A chance of tstms. A chance of showers until late afternoon,
then showers likely late.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 3 seconds and N 1 foot at 7 seconds. Intracoastal waters
light chop. A chance of tstms. A chance of showers early in the
evening, then showers in the late evening and overnight.
.WED...S winds around 5 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 3 seconds and N 1 foot at 7 seconds.
Intracoastal waters smooth. Showers with a chance of tstms.
.WED NIGHT...S winds around 5 kt, becoming SW after midnight. Seas
less than 2 ft or less. Wave Detail: S 1 foot at 3 seconds and N
1 foot at 7 seconds. Intracoastal waters smooth. A chance of tstms.
Showers until early morning, then a chance of showers late.
.THU...NW winds around 5 kt. Seas around 2 ft. Intracoastal waters
smooth. Showers likely with a chance of tstms.
.THU NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft, occasionally to
5 ft. Intracoastal waters light chop. A chance of showers and tstms.
.FRI...N winds 5 to 10 kt. Seas 3 to 5 ft, occasionally to 6 ft.
Intracoastal waters light chop. A chance of tstms. A chance of
showers in the morning, then showers likely in the afternoon.
.FRI NIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft, occasionally to
8 ft. Intracoastal waters light chop. Showers likely early in the
evening. A chance of tstms until early morning. A chance of showers
in the late evening and overnight.

Winds and seas higher in and near tstms.

$$

AMZ651-671-212100-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-
406 AM EDT Mon Sep 21 2026

.TODAY...SW winds around 5 kt. Seas less than 2 ft or less. Wave
Detail: SW 1 foot at 3 seconds. Intracoastal waters smooth. A chance
of tstms. A chance of showers this morning, then showers likely this
afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 3 seconds. Intracoastal waters light chop. A
chance of tstms.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot
at 3 seconds. Intracoastal waters light chop. A chance of tstms. A
chance of showers in the morning, then showers likely in the
afternoon.
.TUE NIGHT...S winds 5 to 10 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 4 seconds and N 1 foot at 5 seconds.
Intracoastal waters light chop. Showers with a chance of tstms.
.WED...S winds 5 to 10 kt. Seas less than 2 ft or less. Wave Detail:
S 1 foot at 3 seconds. Intracoastal waters light chop. Showers with
a chance of tstms.
.WED NIGHT...SE winds around 5 kt. Seas less than 2 ft or less. Wave
Detail: SE 1 foot at 3 seconds. Intracoastal waters smooth. A chance
of tstms. Showers.
.THU...NW winds around 5 kt. Seas less than 2 ft or less.
Intracoastal waters smooth. Showers likely with a chance of tstms.
.THU NIGHT...N winds around 5 kt. Seas less than 2 ft or less, then
around 2 ft after midnight. Intracoastal waters smooth. A chance of
tstms. Showers likely early in the evening, then a chance of showers
in the late evening and overnight.
.FRI...N winds 5 to 10 kt. Seas 2 to 3 ft. Intracoastal waters light
chop. A chance of tstms. A chance of showers in the morning, then
showers likely in the afternoon.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft, occasionally to
5 ft. Intracoastal waters light chop. A chance of tstms. Showers
likely until early morning, then a chance of showers late.

Winds and seas higher in and near tstms.

$$

GMZ656-657-676-212100-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
406 AM EDT Mon Sep 21 2026

.TODAY...SE winds around 5 kt, becoming S this afternoon. Seas less
than 2 ft or less. Wave Detail: SE 1 foot at 2 seconds. Bay and
inland waters light chop. A chance of tstms. Showers likely until
late afternoon, then a chance of showers late.
.TONIGHT...S winds 5 to 10 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 2 seconds. Bay and inland waters light chop. A
chance of showers and tstms.
.TUE...S winds 5 to 10 kt. Seas less than 2 ft or less. Wave Detail:
S 1 foot at 3 seconds. Bay and inland waters light chop. A chance of
tstms. A chance of showers in the morning, then showers likely in
the afternoon.
.TUE NIGHT...SE winds 5 to 10 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 3 seconds. Bay and inland waters light chop.
Showers likely with a chance of tstms.
.WED...S winds around 5 kt. Seas less than 2 ft or less. Wave
Detail: S 1 foot at 3 seconds. Bay and inland waters smooth. A
chance of tstms. Showers.
.WED NIGHT...SE winds 5 to 10 kt. Seas less than 2 ft or less. Wave
Detail: SE 1 foot at 4 seconds. Bay and inland waters light chop. A
chance of tstms. Showers likely until early morning, then a chance
of showers late.
.THU...E winds 5 to 10 kt, becoming SE in the afternoon. Seas less
than 2 ft or less. Bay and inland waters light chop. A chance of
tstms. Showers likely until late afternoon, then a chance of showers
late.
.THU NIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt after
midnight. Seas less than 2 ft or less, then 1 to 2 ft after
midnight. Bay and inland waters light chop. A chance of tstms until
early morning. A chance of showers.
.FRI...NE winds 10 to 15 kt, becoming N 5 to 10 kt in the afternoon.
Seas 1 to 2 ft. Bay and inland waters light chop. A chance of
showers and tstms.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 1 to 2 ft, building to 2 to
3 ft after midnight. Bay and inland waters light chop. Showers
likely with a chance of tstms until early morning, then a chance of
showers late.

Winds and seas higher in and near tstms.

$$

AMZ610-212100-
Lake Okeechobee-
406 AM EDT Mon Sep 21 2026

.TODAY...NE winds around 5 kt, becoming SE this afternoon. Lake
waters smooth. A chance of showers and tstms early this afternoon.
Showers and tstms likely late.
.TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Lake
waters light chop. Showers and tstms likely early in the evening.
.TUE...S winds around 5 kt. Lake waters smooth. A chance of showers
and tstms early in the afternoon. Showers and tstms likely late.
.TUE NIGHT...SE winds around 5 kt. Lake waters smooth. Showers and
tstms likely early in the evening, then a chance of tstms late in
the evening. A chance of showers in the late evening and early
morning.
.WED...SE winds around 5 kt. Lake waters smooth. A chance of showers
in the morning. A chance of tstms late in the morning, then showers
and tstms likely in the afternoon.
.WED NIGHT...E winds around 5 kt, becoming SW after midnight. Lake
waters smooth. Showers and tstms likely early in the evening.
.THU...N winds around 5 kt. Lake waters smooth. Showers and tstms
likely in the afternoon.
.THU NIGHT...N winds 5 to 10 kt. Lake waters light chop. Showers and
tstms likely early in the evening.
.FRI...N winds 5 to 10 kt. Lake waters light chop. A chance of
showers and tstms in the afternoon.
.FRI NIGHT...NE winds 10 to 15 kt. Lake waters a moderate chop. A
chance of showers and tstms early in the evening.

Winds and waves higher in and near tstms.

$$

AMZ630-212100-
Biscayne Bay-
406 AM EDT Mon Sep 21 2026

.TODAY...SW winds around 5 kt, becoming S this afternoon. Light
chop. A chance of tstms this morning. Showers likely. Tstms likely
this afternoon.
.TONIGHT...S winds 5 to 10 kt. Light chop. A chance of showers and
tstms.
.TUE...S winds 5 to 10 kt. Light chop. A chance of showers and tstms
in the morning, then showers and tstms likely in the afternoon.
.TUE NIGHT...S winds 5 to 10 kt. Light chop. Showers likely with a
chance of tstms.
.WED...S winds around 5 kt. Smooth. A chance of tstms. Showers.
.WED NIGHT...SE winds around 5 kt. Smooth. A chance of tstms.
Showers until early morning, then a chance of showers late.
.THU...N winds around 5 kt, becoming E in the afternoon. Smooth. A
chance of showers and tstms in the morning, then showers with tstms
likely in the afternoon.
.THU NIGHT...E winds around 5 kt, becoming NW after midnight.
Smooth. Showers with tstms likely early in the evening, then a
chance of showers and tstms in the late evening and early morning.
.FRI...N winds around 5 kt. Smooth. A chance of showers and tstms in
the morning, then showers and tstms likely in the afternoon.
.FRI NIGHT...N winds around 5 kt, increasing to 5 to 10 kt after
midnight. Light chop. Showers and tstms likely early in the evening,
then a chance of showers and tstms in the late evening and early
morning.

Winds and waves higher in and near tstms.

$$