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National Weather Service Marine Forecast FZUS52 KMFL

FZUS52 KMFL 210203
CWFMFL

Coastal Waters Forecast for South Florida
National Weather Service Miami FL
1003 PM EDT Tue Apr 20 2021

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-GMZ606-211500-
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-
1003 PM EDT Tue Apr 20 2021

SYNOPSIS

A stalled frontal boundary will be the focus for scattered showers
and thunderstorms across the local waters. Southwesterly winds ahead
of the front will create cautionary conditions into the overnight
hours. Storms will be possible again tomorrow through tomorrow night
before the front passes. Cautionary conditions are forecast to
return late in the week as winds become easterly.

GULF STREAM HAZARDS
Showers and thunderstorms with gusty winds
and locally higher seas will be possible through Wednesday night.

The approximate location of the west wall of the Gulf Stream as of
Apr 20, 2021 at 1200 UTC...

 11 nautical miles southeast of Fowey Rocks.
 10 nautical miles east northeast of Port Everglades.
  1 nautical miles east of Lake Worth.
  3 nautical miles east northeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.



AMZ650-670-211500-
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-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
West southwest winds 5 to 10 knots along the
coast to west southwest 10 to 15 knots in the Gulf Stream. Seas
around 2 feet. Period 5 seconds. Intracoastal waters a light
chop. Chance of showers and slight chance of thunderstorms late
in the evening, then showers likely and chance of thunderstorms
after midnight.

WEDNESDAY
West winds 5 to 15 knots. Seas around 2 feet.
Period 4 seconds. Intracoastal waters a light chop. Showers
likely and chance of thunderstorms.

WEDNESDAY NIGHT
Along the coast, west northwest winds 5 knots
becoming north northwest after midnight. In the Gulf Stream,
north northeast winds 5 to 10 knots. Seas 2 to 3 feet. Period
6 seconds. Intracoastal waters a light chop. Slight chance of
showers and thunderstorms in the evening, then chance of showers
and thunderstorms after midnight.

THURSDAY
Northeast winds around 10 knots. Seas around 2 feet
along the coast and 2 to 4 feet with occasional to 5 feet in the
Gulf Stream. Period 6 seconds. Intracoastal waters a light chop.
Chance of showers and slight chance of thunderstorms through the
day.

THURSDAY NIGHT
East northeast winds 10 to 15 knots along the
coast to east northeast 10 to 15 knots with gusts to around
20 knots in the Gulf Stream. Seas 2 to 3 feet along the coast
and 3 to 5 feet with occasional to 6 feet in the Gulf Stream.
Intracoastal waters a moderate chop.

FRIDAY
East winds around 15 knots with gusts to around
20 knots. Seas 3 to 5 feet with occasional seas to 6 feet.
Intracoastal waters a moderate chop. Slight chance of showers
and thunderstorms in the afternoon.

FRIDAY NIGHT
East southeast winds around 15 knots with gusts
to around 20 knots. Seas 2 to 4 feet with occasional seas to
5 feet. Intracoastal waters a moderate chop.

SATURDAY
South southeast winds 15 to 20 knots with gusts to
around 25 knots. Seas 2 to 4 feet with occasional seas to
5 feet. Intracoastal waters a moderate chop. Chance of showers
and slight chance of thunderstorms in the afternoon.

SATURDAY NIGHT
South southwest winds 10 to 15 knots along the
coast to south southwest 10 to 15 knots with gusts to around
20 knots in the Gulf Stream. Seas 2 to 3 feet. Intracoastal
waters a light chop. Slight chance of showers.

SUNDAY
Southwest winds 10 to 15 knots. Seas around 2 feet.
Intracoastal waters a light chop. Slight chance of showers in
the morning, then chance of showers and thunderstorms in the
afternoon.



AMZ651-671-211500-
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-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
South southwest winds 5 to 10 knots. Seas
around 2 feet. Period 6 seconds. Intracoastal waters a light
chop. Slight chance of showers and thunderstorms late in the
evening. Chance of showers and thunderstorms after midnight.

WEDNESDAY
West southwest winds 5 to 10 knots. Seas around
2 feet. Period 5 seconds. Intracoastal waters a light chop.
Chance of showers in the morning. Chance of thunderstorms
. Showers likely in the afternoon.

WEDNESDAY NIGHT
North northwest winds 5 to 10 knots. Seas
around 2 feet. Period 5 seconds. Intracoastal waters a light
chop. Slight chance of showers and thunderstorms in the evening,
then chance of showers and thunderstorms after midnight.

THURSDAY
Northeast winds 5 to 10 knots. Seas around 2 feet.
Period 3 seconds. Intracoastal waters a light chop. Chance of
showers and slight chance of thunderstorms.

THURSDAY NIGHT
East northeast winds 10 to 15 knots with gusts
to around 20 knots. Seas 2 to 3 feet along the coast and 3 to
5 feet with occasional to 6 feet in the Gulf Stream.
Intracoastal waters a moderate chop.

FRIDAY
East winds around 15 knots with gusts to around
20 knots. Seas 2 to 3 feet along the coast and 3 to 5 feet with
occasional to 6 feet in the Gulf Stream. Intracoastal waters a
moderate chop. Slight chance of showers and thunderstorms in the
afternoon.

FRIDAY NIGHT
East southeast winds around 15 knots with gusts
to around 20 knots. Seas 2 to 3 feet along the coast and 3 to
5 feet with occasional to 6 feet in the Gulf Stream.
Intracoastal waters a moderate chop.

SATURDAY
South southeast winds 10 to 15 knots with gusts to
around 25 knots. Seas 2 to 4 feet with occasional seas to
5 feet. Intracoastal waters a light chop.

SATURDAY NIGHT
South winds 10 to 15 knots with gusts to
around 20 knots. Seas 2 to 3 feet. Intracoastal waters a light
chop.

SUNDAY
Southwest winds 10 to 15 knots. Seas around 2 feet.
Intracoastal waters a light chop. Chance of showers and slight
chance of thunderstorms in the afternoon.



AMZ630-211500-
Biscayne Bay-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
Southwest winds 5 to 10 knots. Bay waters a
light chop. Slight chance of showers and thunderstorms late in
the evening, then chance of showers and thunderstorms after
midnight.

WEDNESDAY
West southwest winds 5 to 10 knots. Bay waters a
light chop. Chance of showers and thunderstorms.

WEDNESDAY NIGHT
North northwest winds 5 to 10 knots. Bay
waters a light chop. Slight chance of showers and thunderstorms
in the evening, then chance of showers after midnight.

THURSDAY
Northeast winds around 10 knots. Bay waters a light
chop. Slight chance of thunderstorms in the morning. Chance of
showers. Chance of thunderstorms in the
afternoon.

THURSDAY NIGHT
East northeast winds 10 to 15 knots. Bay
waters a moderate chop.

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

FRIDAY NIGHT
East southeast winds 10 to 15 knots with gusts
to around 20 knots. Bay waters a moderate chop.

SATURDAY
South southeast winds 10 to 15 knots with gusts to
around 20 knots. Bay waters a moderate chop.

SATURDAY NIGHT
South winds 5 to 10 knots. Bay waters a light
chop.

SUNDAY
Southwest winds 5 to 10 knots. Bay waters a light
chop. Slight chance of showers and thunderstorms in the
afternoon.



GMZ656-657-211500-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
West southwest winds around 10 knots. Seas
around 2 feet. Period 5 seconds. Bay and inland waters a light
chop. Chance of showers late in the evening. Slight chance of
thunderstorms through the night. Showers likely after midnight.

WEDNESDAY
West northwest winds around 10 knots. Seas around
2 feet. Period 5 seconds. Bay and inland waters a light chop.
Showers likely in the morning. Chance of thunderstorms through
the day. Chance of showers in the afternoon.

WEDNESDAY NIGHT
North northwest winds around 10 knots
nearshore and north 10 to 15 knots with gusts to around 20 knots
offshore. Seas around 2 feet. Period 4 seconds. Bay and inland
waters a light chop. Slight chance of showers.

THURSDAY
Northeast winds 5 to 15 knots with gusts to around
20 knots becoming north northwest in the afternoon. Seas around
2 feet. Period 5 seconds. Bay and inland waters a light chop.
Slight chance of showers. Slight chance of
thunderstorms in the afternoon.

THURSDAY NIGHT
Nearshore, east northeast winds 5 to 10 knots,
Gusts up to 20 knots in the evening. Offshore, north northeast
winds around 10 knots becoming east northeast late in the
evening. Seas around 2 feet. Bay and inland waters a light chop.

FRIDAY
East southeast winds 10 to 15 knots with gusts to
around 20 knots. Seas around 2 feet. Bay and inland waters a
light chop.

FRIDAY NIGHT
East southeast winds 10 to 15 knots with gusts
to around 20 knots. Seas 2 to 3 feet. Bay and inland waters a
light chop.

SATURDAY
South southeast winds 10 to 15 knots with gusts to
around 20 knots. Seas 2 to 3 feet. Bay and inland waters a light
chop.

SATURDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet.
Bay and inland waters a light chop.

SUNDAY
West winds 5 to 10 knots. Seas around 2 feet. Bay and
inland waters a light chop. Slight chance of showers and
thunderstorms in the afternoon.



GMZ676-211500-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
West southwest winds 5 to 10 knots. Seas 2 to
3 feet. Period 6 seconds. Chance of showers late in the evening.
Slight chance of thunderstorms through the night. Showers likely
after midnight.

WEDNESDAY
Northwest winds around 10 knots. Seas around
2 feet. Period 6 seconds. Showers likely and chance of
thunderstorms in the morning.

WEDNESDAY NIGHT
North winds 10 to 15 knots with gusts to
around 20 knots. Seas 2 to 3 feet. Period 4 seconds. Slight
chance of showers in the evening.

THURSDAY
North northeast winds 5 to 15 knots. Seas 2 to
3 feet. Period 5 seconds.

THURSDAY NIGHT
East northeast winds 10 to 15 knots. Seas 2 to
3 feet.

FRIDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

FRIDAY NIGHT
Southeast winds 10 to 15 knots with gusts to
around 20 knots. Seas 2 to 3 feet.

SATURDAY
South southeast winds 10 to 15 knots with gusts to
around 20 knots. Seas 2 to 3 feet.

SATURDAY NIGHT
South southwest winds around 10 knots. Seas
around 2 feet.

SUNDAY
West winds around 10 knots. Seas around 2 feet.



AMZ610-211500-
Lake Okeechobee-
1003 PM EDT Tue Apr 20 2021

REST OF TONIGHT
West southwest winds 5 to 10 knots. Lake
waters a light chop. Chance of showers late in the evening.
Slight chance of thunderstorms through the night. Showers likely
after midnight.

WEDNESDAY
West northwest winds 5 to 10 knots. Lake waters a
light chop. Slight chance of thunderstorms in the morning.
Chance of showers. Chance of thunderstorms in
the afternoon.

WEDNESDAY NIGHT
North northwest winds 5 to 10 knots. Gusts up
to 20 knots after midnight. Lake waters a light chop.

THURSDAY
Northeast winds 5 to 10 knots. Lake waters a light
chop. Slight chance of showers in the afternoon.

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

FRIDAY
East winds around 10 knots. Lake waters a light chop.
Slight chance of showers in the afternoon.

FRIDAY NIGHT
East southeast winds 10 to 15 knots. Lake waters
a moderate chop.

SATURDAY
South winds around 10 knots. Lake waters a light
chop. Slight chance of showers and thunderstorms in the
afternoon.

SATURDAY NIGHT
South southwest winds 5 to 10 knots. Lake
waters a light chop. Slight chance of showers.

SUNDAY
West winds 5 to 10 knots. Lake waters a light chop.
Chance of showers and thunderstorms in the afternoon.