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National Weather Service Marine Forecast FZUS52 KMFL

FZUS52 KMFL 190303
CWFMFL

Coastal Waters Forecast for South Florida
National Weather Service Miami FL
1103 PM EDT Fri Sep 18 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-GMZ606-191615-
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-
1103 PM EDT Fri Sep 18 2020

SYNOPSIS

Southerly to southwesterly winds will transition to a more
westerly direction ahead of a southward moving cold front this
weekend. As the front moves through, winds quickly transition to
a northerly or northeasterly direction. Hazardous marine
conditions will develop in the wake of the front late Saturday
and especially on Sunday. Winds and swells will be elevated
across the Atlantic waters through much of the marine forecast
period.

GULF STREAM HAZARDS
Building winds and waves late this weekend
into early next week.

The approximate location of the west wall of the Gulf Stream as of
Sep 17, 2020 at 1200 UTC...

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

This data courtesy of the Naval Oceanographic Office.



AMZ650-670-191615-
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-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
West northwest winds 5 to 10 knots. Seas 2 to
3 feet. Period 3 seconds increasing to 14 seconds after
midnight. Intracoastal waters a light chop. Chance of showers
and slight chance of thunderstorms.

SATURDAY
Northwest winds around 5 knots becoming north in the
afternoon. Seas 2 to 3 feet. Period 14 seconds. Intracoastal
waters smooth. Chance of showers and slight chance of
thunderstorms.

SATURDAY NIGHT
North winds 5 to 10 knots. Along the coast,
seas around 2 feet building to 2 to 4 feet with occasional seas
to 5 feet after midnight. In the Gulf Stream, seas 2 to 3 feet
building to 5 to 7 feet with occasional seas to 9 feet after
midnight. Period 15 seconds becoming 10 seconds after midnight.
North northeast swell 3 to 4 feet after midnight. Intracoastal
waters a light chop. Chance of showers and slight chance of
thunderstorms.

SUNDAY
North northeast winds 10 to 20 knots with gusts to
around 25 knots. Along the coast, 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. In the Gulf Stream,
seas 9 to 11 feet with occasional seas to 14 feet. Period
10 seconds. North swell 3 to 6 feet. Intracoastal waters choppy
in exposed areas. Chance of showers and slight chance of
thunderstorms in the morning, then showers likely and chance of
thunderstorms in the afternoon.

SUNDAY NIGHT
Northeast winds 20 to 25 knots with gusts to
around 30 knots. Seas 8 to 10 feet with occasional seas to
13 feet along the coast and 10 to 12 feet with occasional to
15 feet in the Gulf Stream. North northeast swell 3 to 7 feet.
Intracoastal waters rough in exposed areas. Showers likely and
chance of thunderstorms in the evening, then chance of showers
and slight chance of thunderstorms after midnight.

MONDAY AND MONDAY NIGHT
East northeast winds 20 to 25 knots
with gusts to around 35 knots. Seas 8 to 10 feet with occasional
seas to 13 feet along the coast and 10 to 12 feet with
occasional to 15 feet in the Gulf Stream. North northeast swell
3 to 8 feet. Intracoastal waters rough in exposed areas. Chance
of showers. Slight chance of thunderstorms. Slight chance of
showers after midnight.

TUESDAY
East northeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 8 to 10 feet with occasional seas to
13 feet. North northeast swell 3 to 6 feet. Intracoastal waters
choppy in exposed areas. Slight chance of showers and
thunderstorms.

TUESDAY NIGHT
East northeast winds 15 to 20 knots with gusts
to around 25 knots. Seas 7 to 9 feet with occasional seas to
11 feet. North northeast swell 3 to 6 feet. Intracoastal waters
choppy in exposed areas. Slight chance of showers.

WEDNESDAY
East northeast winds around 15 knots with gusts to
around 25 knots. Seas 8 to 10 feet with occasional seas to
13 feet. Northeast swell 3 to 7 feet. Intracoastal waters a
moderate chop. Slight chance of showers.



AMZ651-671-191615-
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-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
West winds 5 to 10 knots. Seas less than
2 feet. Period 8 seconds. Intracoastal waters a light chop.
Chance of showers and slight chance of thunderstorms.

SATURDAY
West southwest winds 5 knots. Seas less than 2 feet.
Period 9 seconds. Intracoastal waters smooth. Chance of showers
. Chance of thunderstorms in the afternoon.

SATURDAY NIGHT
Northwest winds 5 to 10 knots. Seas less than
2 feet building to 2 to 3 feet after midnight. Period 4 seconds
increasing to 11 seconds after midnight. Intracoastal waters a
light chop. Chance of showers and slight chance of
thunderstorms.

SUNDAY
North winds 5 to 15 knots. Gusts up to 25 knots in the
afternoon. Along the coast, 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. In the Gulf Stream, seas 5 to 7 feet
with occasional seas to 9 feet. Period 10 seconds. North swell
4 feet increasing to 3 to 4 feet in the afternoon. Intracoastal
waters a light chop. Chance of showers and slight chance of
thunderstorms in the morning, then showers likely and chance of
thunderstorms in the afternoon.

SUNDAY NIGHT
Northeast winds 10 to 20 knots with gusts to
around 30 knots. Seas 6 to 8 feet with occasional seas to
10 feet along the coast and 8 to 10 feet with occasional to
13 feet in the Gulf Stream. North swell 3 to 5 feet.
Intracoastal waters choppy in exposed areas. Showers likely and
chance of thunderstorms in the evening, then chance of showers
and slight chance of thunderstorms after midnight.

MONDAY
Northeast winds 15 to 25 knots with gusts to around
35 knots. Seas 6 to 8 feet with occasional seas to 10 feet along
the coast and 9 to 11 feet with occasional to 14 feet in the
Gulf Stream. North swell 3 to 5 feet. Intracoastal waters rough
in exposed areas. Showers likely in the morning. Slight chance
of thunderstorms. Chance of showers in the
afternoon.

MONDAY NIGHT
East northeast winds 20 to 25 knots with gusts
to around 35 knots. Seas 7 to 9 feet with occasional seas to
11 feet along the coast and 9 to 11 feet with occasional to
14 feet in the Gulf Stream. North swell 3 to 5 feet.
Intracoastal waters rough in exposed areas. Chance of showers in
the evening. Slight chance of thunderstorms through the night.
Slight chance of showers after midnight.

TUESDAY
East northeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 7 to 9 feet with occasional seas to
11 feet. North northwest swell 3 to 4 feet. Intracoastal waters
choppy in exposed areas. Slight chance of showers and
thunderstorms.

TUESDAY NIGHT
East northeast winds 15 to 20 knots with gusts
to around 25 knots. Seas 5 to 7 feet with occasional seas to
9 feet. North swell around 3 feet. Intracoastal waters choppy in
exposed areas. Chance of showers in the evening, then slight
chance of showers after midnight.

WEDNESDAY
East northeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 4 to 6 feet with occasional seas to
8 feet. North swell around 3 feet in the morning. Intracoastal
waters choppy in exposed areas. Slight chance of showers.



AMZ630-191615-
Biscayne Bay-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
West northwest winds around 5 knots. Bay
waters smooth.

SATURDAY
North northwest winds 5 knots becoming south
southeast around 5 knots in the afternoon. Bay waters smooth.
Slight chance of thunderstorms in the morning. Chance of showers
. Chance of thunderstorms in the afternoon.

SATURDAY NIGHT
West winds around 5 knots becoming north
northwest after midnight. Bay waters smooth. Chance of showers
in the evening. Slight chance of thunderstorms through the
night. Slight chance of showers after midnight.

SUNDAY
North northeast winds 5 to 10 knots. Bay waters a
light chop. Chance of showers in the morning. Chance of
thunderstorms. Showers likely in the afternoon.

SUNDAY NIGHT
Northeast winds 10 to 20 knots with gusts to
around 25 knots. Bay waters choppy. Showers likely and chance of
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms after midnight.

MONDAY
Northeast winds 15 to 20 knots with gusts to around
30 knots. Bay waters choppy. Slight chance of thunderstorms in
the morning. Chance of showers. Chance of
thunderstorms in the afternoon.

MONDAY NIGHT AND TUESDAY
East northeast winds 15 to 20 knots
with gusts to around 30 knots. Bay waters choppy. Slight chance
of showers and thunderstorms.

TUESDAY NIGHT
East northeast winds around 15 knots with gusts
to around 20 knots. Bay waters a moderate chop. Slight chance of
showers through the night.

WEDNESDAY
East winds around 15 knots with gusts to around
20 knots. Bay waters a moderate chop. Chance of showers in the
afternoon.



GMZ656-657-191615-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
North northwest winds around 5 knots becoming
north northeast after midnight. Seas around 2 feet. Period
5 seconds. Bay and inland waters smooth.

SATURDAY
East winds 5 knots becoming west in the afternoon.
Seas less than 2 feet. Period 4 seconds. Bay and inland waters a
light chop. Slight chance of showers. Slight
chance of thunderstorms in the afternoon.

SATURDAY NIGHT
North winds 5 to 10 knots. Seas less than
2 feet. Period 3 seconds. Bay and inland waters a light chop.
Chance of showers and slight chance of thunderstorms in the
evening.

SUNDAY
North northeast winds 5 to 15 knots. Seas around
2 feet. Period 3 seconds. Bay and inland waters a light chop.
Slight chance of showers and thunderstorms in the morning, then
showers likely and chance of thunderstorms in the afternoon.

SUNDAY NIGHT
Northeast winds 10 to 20 knots with gusts to
around 25 knots nearshore and northeast 15 to 20 knots with
gusts to around 25 knots offshore. Seas 2 to 3 feet. Bay and
inland waters a moderate chop. Chance of showers and slight
chance of thunderstorms through the night.

MONDAY
East northeast winds 15 to 20 knots with gusts to
around 30 knots. Seas around 2 feet nearshore and 2 to 4 feet
with occasional to 5 feet offshore. Bay and inland waters a
moderate chop. Slight chance of thunderstorms in the morning.
Chance of showers. Chance of thunderstorms in
the afternoon.

MONDAY NIGHT AND TUESDAY
East northeast winds 15 to 20 knots
with gusts to around 30 knots. Seas around 2 feet nearshore and
2 to 4 feet with occasional to 5 feet offshore. Bay and inland
waters a moderate chop. Slight chance of showers and
thunderstorms in the evening. Slight chance of showers and
thunderstorms in the morning.

TUESDAY NIGHT
East northeast winds 10 to 20 knots with gusts
to around 25 knots nearshore and east northeast 15 to 20 knots
with gusts to around 25 knots offshore. Seas around 2 feet
nearshore and 2 to 3 feet offshore. Bay and inland waters a
moderate chop. Slight chance of showers in the evening.

WEDNESDAY
East winds 10 to 15 knots with gusts to around
20 knots. Seas less than 2 feet nearshore and 2 to 3 feet
offshore. Bay and inland waters a light chop. Slight chance of
showers in the afternoon.



GMZ676-191615-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
North northeast winds 5 knots. Seas around
2 feet. Period 5 seconds. Slight chance of showers after
midnight.

SATURDAY
East winds around 5 knots becoming north 5 knots in
the afternoon. Seas less than 2 feet. Period 4 seconds. Slight
chance of thunderstorms in the morning. Slight chance of showers
.

SATURDAY NIGHT
North northeast winds 5 to 10 knots. Seas
around 2 feet. Period 4 seconds. Chance of showers and slight
chance of thunderstorms in the evening.

SUNDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Period 5 seconds. Showers likely and chance of thunderstorms in
the afternoon.

SUNDAY NIGHT AND MONDAY
East northeast winds 15 to 20 knots
with gusts to around 30 knots. Seas 3 to 5 feet with occasional
seas to 6 feet. Chance of showers and slight chance of
thunderstorms.

MONDAY NIGHT AND TUESDAY
East northeast winds 15 to 20 knots
with gusts to around 30 knots. Seas 3 to 5 feet with occasional
seas to 6 feet. Slight chance of showers and thunderstorms in
the evening. Slight chance of showers and thunderstorms in the
afternoon.

TUESDAY NIGHT
East northeast winds 15 to 20 knots with gusts
to around 25 knots. Seas 2 to 4 feet with occasional seas to
5 feet. Slight chance of showers in the evening.

WEDNESDAY
East winds 10 to 15 knots with gusts to around
25 knots. Seas 2 to 3 feet. Slight chance of showers in the
afternoon.



AMZ610-191615-
Lake Okeechobee-
1103 PM EDT Fri Sep 18 2020

REST OF TONIGHT
Northwest winds 5 to 10 knots. Lake waters a
light chop.

SATURDAY
North northwest winds 5 knots. Lake waters smooth.
Slight chance of thunderstorms in the morning. Chance of showers
. Chance of thunderstorms in the afternoon.

SATURDAY NIGHT
North northeast winds 5 to 10 knots. Lake
waters a light chop. Chance of showers and slight chance of
thunderstorms in the evening.

SUNDAY
Northeast winds 10 to 20 knots with gusts to around
25 knots. Lake waters choppy. Chance of showers in the morning.
Chance of thunderstorms. Showers likely in the
afternoon.

SUNDAY NIGHT AND MONDAY
Northeast winds 15 to 20 knots with
gusts to around 25 knots. Lake waters choppy. Chance of showers
and slight chance of thunderstorms.

MONDAY NIGHT
Northeast winds 10 to 20 knots with gusts to
around 25 knots. Lake waters choppy.

TUESDAY
East northeast winds 10 to 15 knots with gusts to
around 20 knots. Lake waters a moderate chop. Slight chance of
showers and thunderstorms in the afternoon.

TUESDAY NIGHT
East northeast winds 10 to 15 knots. Lake
waters a moderate chop.

WEDNESDAY
East northeast winds 10 to 15 knots. Lake waters a
moderate chop. Chance of showers in the afternoon.