Coastal Waters Forecast
Issued by NWS Miami, FL

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FZUS52 KMFL 200837
CWFMFL

Coastal Waters Forecast for South Florida
National Weather Service Miami FL
337 AM EST Mon Jan 20 2020

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-GMZ606-201730-
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-
337 AM EST Mon Jan 20 2020

.SYNOPSIS...
A cold front moving across the region will bring increasing
northwesterly to northerly flow today into tonight, allowing for
building hazardous seas. A surface low pressure developing over
the open Atlantic waters to the north of the Bahamas is forecast
to create swell that will allow the elevated seas to remain in
the Atlantic through a good part of the week.

.GULF STREAM HAZARDS...Hazardous winds and seas will build behind
the cold front with elevated seas remaining through much of the
week.

The approximate location of the west wall of the Gulf Stream as of
Jan 20, 2020 at 1200 UTC...

  5 nautical miles southeast of Fowey Rocks.
  7 nautical miles east northeast of Port Everglades.
  5 nautical miles east northeast of Lake Worth.
 10 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ650-670-201730-
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-
337 AM EST Mon Jan 20 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EST THIS MORNING
THROUGH TUESDAY EVENING...

.TODAY...North winds 10 to 15 knots with gusts to around
20 knots along the coast to north 15 to 20 knots in the Gulf
Stream. Seas 4 to 6 feet with occasional seas to 8 feet. Period
6 seconds. North northeast swell 3 feet in the morning.
Intracoastal waters a moderate chop. Light showers likely in the
morning, then chance of light showers in the afternoon.
.TONIGHT...North winds 15 to 20 knots with gusts to around
25 knots. Seas 3 to 5 feet with occasional seas to 6 feet along
the coast and 5 to 7 feet with occasional to 9 feet in the Gulf
Stream. Period 7 seconds. Intracoastal waters a moderate chop.
Chance of light showers.
.TUESDAY...North winds 15 to 25 knots with gusts to around
30 knots. Seas 4 to 6 feet with occasional seas to 8 feet along
the coast and 7 to 9 feet with occasional to 11 feet in the Gulf
Stream. Period 8 seconds. Intracoastal waters a moderate chop.
Chance of light showers.
.TUESDAY NIGHT...North northwest winds around 25 knots with
gusts to around gale force. Seas 6 to 8 feet with occasional
seas to 10 feet along the coast and 10 to 12 feet with occasional
to 15 feet in the Gulf Stream. Period 8 seconds. Intracoastal
waters a moderate chop. Chance of light showers through the
night.
.WEDNESDAY AND WEDNESDAY NIGHT...East northeast winds 15 to
25 knots with gusts to around gale force. Seas 8 to 10 feet with
occasional seas to 14 feet along the coast and 12 to 14 feet
with occasional to 18 feet in the Gulf Stream. North swell
5 feet. Intracoastal waters rough in exposed areas. Chance of
light showers, then slight chance of light showers after
midnight.
.THURSDAY...East winds 15 to 20 knots with gusts to around
25 knots. Along the coast, seas 7 to 9 feet with occasional seas
to 11 feet. In the Gulf Stream, seas 9 to 11 feet with
occasional seas to 14 feet subsiding to 7 to 9 feet with
occasional seas to 11 feet in the afternoon. North northeast
swell 3 to 6 feet becoming 5 feet in the afternoon. Intracoastal
waters choppy in exposed areas. Slight chance of light showers
.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 6 to 8 feet
with occasional seas to 10 feet. North northeast swell 5 feet.
Intracoastal waters a moderate chop. Slight chance of light
showers.
.FRIDAY...Southeast winds around 10 knots. Seas 5 to 7 feet with
occasional seas to 9 feet. North northeast swell 4 feet.
Intracoastal waters a light chop. Slight chance of light showers
in the morning, then chance of light showers in the afternoon.

$$

AMZ651-671-201730-
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-
337 AM EST Mon Jan 20 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY EVENING...

.TODAY...North winds 10 to 20 knots. Along the coast, seas 2 to
3 feet. In the Gulf Stream, seas 2 to 4 feet with occasional
seas to 5 feet building to 4 to 6 feet with occasional seas to
8 feet in the afternoon. Period 8 seconds. Intracoastal waters a
moderate chop. Chance of light showers in the morning, then
light showers likely in the afternoon.
.TONIGHT...North winds 15 to 20 knots with gusts to around
25 knots. Seas 2 to 4 feet with occasional seas to 5 feet along
the coast and 4 to 6 feet with occasional to 8 feet in the Gulf
Stream. Period 7 seconds. Intracoastal waters a moderate chop.
Light showers likely in the evening, then chance of light
showers after midnight.
.TUESDAY...North winds 15 to 25 knots with gusts to around
30 knots. Along the coast, seas 2 to 4 feet with occasional seas
to 5 feet. In the Gulf Stream, seas 4 to 6 feet with occasional
seas to 8 feet building to 6 to 8 feet with occasional seas to
10 feet in the afternoon. Period 7 seconds. Intracoastal waters
a moderate chop. Chance of light showers in the morning. Slight
chance of light showers in the afternoon.
.TUESDAY NIGHT...North northwest winds 20 to 25 knots with gusts
to around 30 knots. Seas 4 to 6 feet with occasional seas to
8 feet along the coast and 9 to 11 feet with occasional to
14 feet in the Gulf Stream. Period 8 seconds. Intracoastal
waters a moderate chop. Slight chance of light showers.
.WEDNESDAY...North winds 15 to 25 knots with gusts to around
30 knots. Seas 5 to 7 feet with occasional seas to 9 feet along
the coast and 9 to 11 feet with occasional to 14 feet in the
Gulf Stream. North swell 3 feet in the afternoon. Intracoastal
waters a moderate chop. Chance of light showers.
.WEDNESDAY NIGHT...East northeast winds 15 to 20 knots with
gusts to around 25 knots along the coast to east northeast 15 to
25 knots with gusts to around 30 knots in the Gulf Stream. Seas
7 to 9 feet with occasional seas to 11 feet along the coast and
10 to 12 feet with occasional to 15 feet in the Gulf Stream.
North swell 3 to 6 feet. Intracoastal waters rough in exposed
areas. Slight chance of light showers through the night.
.THURSDAY...East winds 15 to 20 knots with gusts to around
25 knots. Along the coast, seas 6 to 8 feet with occasional seas
to 10 feet. In the Gulf Stream, seas 8 to 10 feet with
occasional seas to 13 feet subsiding to 6 to 8 feet with
occasional seas to 10 feet in the afternoon. North northeast
swell 3 to 6 feet. Intracoastal waters choppy in exposed areas.
Slight chance of light showers.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts to around
20 knots. Seas 5 to 7 feet with occasional seas to 9 feet. North
northeast swell 3 to 4 feet. Intracoastal waters a moderate
chop. Slight chance of light showers in the evening.
.FRIDAY...East southeast winds around 10 knots. Seas 3 to 5 feet
with occasional seas to 6 feet. Intracoastal waters a light
chop. Slight chance of light showers.

$$

AMZ630-201730-
Biscayne Bay-
337 AM EST Mon Jan 20 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...North winds around 15 knots. Bay waters a moderate
chop. Chance of light showers.
.TONIGHT...North winds around 15 knots with gusts to around
20 knots. Bay waters a moderate chop. Chance of light showers in
the evening.
.TUESDAY...North northwest winds 15 to 20 knots with gusts to
around 25 knots. Bay waters choppy.
.TUESDAY NIGHT...North northwest winds 15 to 20 knots with gusts
to around 30 knots. Bay waters choppy.
.WEDNESDAY...North northwest winds 15 to 20 knots with gusts to
around 30 knots. Bay waters choppy.
.WEDNESDAY NIGHT...East northeast winds 10 to 20 knots with
gusts to around 25 knots. Bay waters choppy.
.THURSDAY...East winds 10 to 15 knots with gusts to around
25 knots. Bay waters a moderate chop.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts to around
20 knots. Bay waters a moderate chop. Slight chance of light
showers after midnight.
.FRIDAY...Southeast winds 5 to 10 knots. Bay waters a light
chop. Slight chance of light showers.

$$

GMZ656-657-201730-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
337 AM EST Mon Jan 20 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EST THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...North winds 5 to 15 knots nearshore and north 15 to
20 knots offshore. Seas 2 to 3 feet nearshore and 2 to 4 feet
with occasional to 5 feet offshore. Period 2 seconds increasing
to 8 seconds in the afternoon. Bay and inland waters a moderate
chop. Chance of light showers in the morning. Slight chance of
light showers in the afternoon.
.TONIGHT...North winds 10 to 15 knots with gusts to around
20 knots nearshore and north 15 to 20 knots offshore. Seas 2 to
3 feet nearshore and 3 to 5 feet with occasional to 6 feet
offshore. Period 7 seconds. Bay and inland waters a moderate
chop.
.TUESDAY...North northwest winds 15 to 20 knots with gusts to
around 25 knots. Seas 2 to 3 feet nearshore and 3 to 5 feet with
occasional to 6 feet offshore. Period 4 seconds. Bay and inland
waters a moderate chop.
.TUESDAY NIGHT...North winds 15 to 20 knots with gusts to around
25 knots nearshore and north 20 to 25 knots offshore. Seas 2 to
3 feet nearshore and 3 to 5 feet with occasional to 6 feet
offshore. Period 4 seconds. Bay and inland waters a moderate
chop.
.WEDNESDAY...North winds 10 to 15 knots with gusts to around
25 knots nearshore and north 15 to 20 knots with gusts to around
25 knots offshore. Seas 2 to 3 feet nearshore and 3 to 5 feet
with occasional to 6 feet offshore. Bay and inland waters a
moderate chop.
.WEDNESDAY NIGHT...North northeast winds 10 to 15 knots
nearshore and northeast 10 to 15 knots with gusts to around
20 knots offshore. Seas 2 to 3 feet. Bay and inland waters a
light chop.
.THURSDAY...East winds 5 to 10 knots with gusts to around
20 knots. Seas around 2 feet. Bay and inland waters a light
chop.
.THURSDAY NIGHT...East winds 5 to 10 knots nearshore and east
5 to 15 knots offshore. Seas less than 2 feet. Bay and inland
waters a light chop. Slight chance of light showers after
midnight.
.FRIDAY...Southeast winds 5 to 10 knots. Seas less than 2 feet.
Bay and inland waters a light chop. Slight chance of light
showers in the morning, then chance of light showers in the
afternoon.

$$

GMZ676-201730-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
337 AM EST Mon Jan 20 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EST THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...North winds 15 to 20 knots with gusts to around
25 knots. Seas 4 to 6 feet with occasional seas to 8 feet.
Period 7 seconds.
.TONIGHT...North northeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 4 to 6 feet with occasional seas to
8 feet. Period 7 seconds.
.TUESDAY...North winds 20 to 25 knots with gusts to around
30 knots. Seas 3 to 5 feet with occasional seas to 6 feet
building to 5 to 7 feet with occasional seas to 9 feet in the
afternoon. Period 6 seconds.
.TUESDAY NIGHT...North winds 20 to 25 knots with gusts to around
30 knots. Seas 5 to 7 feet with occasional seas to 9 feet.
Period 7 seconds.
.WEDNESDAY...North winds 15 to 20 knots. Gusts up to 30 knots.
Seas 4 to 6 feet with occasional seas to 8 feet.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 2 to 4 feet with occasional seas to
5 feet.
.THURSDAY...East winds 5 to 15 knots with gusts to around
25 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...East southeast winds 5 to 15 knots. Seas
around 2 feet. Slight chance of light showers after midnight.
.FRIDAY...South southeast winds 5 to 15 knots. Seas around
2 feet. Chance of light showers.

$$

AMZ610-201730-
Lake Okeechobee-
337 AM EST Mon Jan 20 2020

.TODAY...North winds 10 to 15 knots. Lake waters a moderate
chop.
.TONIGHT...North winds 10 to 15 knots with gusts to around
20 knots. Lake waters a moderate chop.
.TUESDAY...North northwest winds 10 to 15 knots with gusts to
around 20 knots. Lake waters a moderate chop.
.TUESDAY NIGHT...North northwest winds 15 to 20 knots with gusts
to around 25 knots. Lake waters choppy.
.WEDNESDAY...North winds 10 to 20 knots with gusts to around
25 knots. Lake waters choppy.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Gusts up to
20 knots in the evening. Lake waters a light chop.
.THURSDAY AND THURSDAY NIGHT...East winds 5 to 10 knots. Lake
waters a light chop.
.FRIDAY...Southeast winds 5 to 10 knots. Lake waters a light
chop. Chance of light showers in the afternoon.

$$



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