Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 231324
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
924 AM EDT Wed Sep 23 2020

Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach FL
out to 60 nm.

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 1/10 of the waves.

AMZ400-232145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
924 AM EDT Wed Sep 23 2020

.SYNOPSIS...
High pressure centered along the Carolina coast will move eastward
and will strengthen near Bermuda on Friday. Seas will continue to
slowly subside, but will remain at Small Craft Advisory levels
through Thursday. Meanwhile, the remnants of Tropical Storm Beta
will move northeastward through the lower Mississippi Valley
tonight and will then weaken over the Tennessee and southern
Appalachians on Thursday night and Friday. This weather pattern
will result in gradually increasing southeasterly winds beginning
tonight, followed by winds subsiding on Saturday night and Sunday
ahead of an approaching cold front. Showers and thunderstorms will
increase in coverage over our local waters from Friday through the
weekend. A series of dry cold frontal passages are then expected
early next week.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 22, 2020 at 1200 UTC...

 56 nautical miles east of Flagler Beach.
 65 nautical miles east of Saint Augustine Beach.
 80 nautical miles east of Jacksonville Beach.
 90 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-232145-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
924 AM EDT Wed Sep 23 2020

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas 3 to 4 feet
with a dominant period of 15 seconds. Mostly smooth on the
intracoastal waters.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet with a
dominant period of 15 seconds. Mostly smooth on the intracoastal
waters.
.THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 3 to 4 feet with a dominant
period of 13 seconds. A light chop on the intracoastal waters.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. A light chop on the intracoastal waters. Chance of
showers after midnight.
.FRIDAY THROUGH SATURDAY...Southeast winds 10 to 15 knots. Seas 2
to 4 feet. A light chop on the intracoastal waters. Chance of
showers and slight chance of thunderstorms.
.SATURDAY NIGHT AND SUNDAY...Southeast winds 5 to 10 knots. Seas
2 to 3 feet. Chance of showers and slight chance of thunderstorms.

$$

AMZ452-454-232145-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
924 AM EDT Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...East winds around 10 knots. Seas 6 to 8 feet
with a dominant period of 14 seconds. A light chop on the
intracoastal waters.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with
a dominant period of 15 seconds. A light chop on the intracoastal
waters.
.THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15
knots in the afternoon. Seas 4 to 6 feet with a dominant period of
14 seconds. A light chop on the intracoastal waters.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5
feet. A light chop on the intracoastal waters. Chance of showers
after midnight.
.FRIDAY THROUGH SATURDAY...Southeast winds 10 to 15 knots. Seas 2
to 4 feet. A light chop on the intracoastal waters. Chance of
showers and slight chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. Seas 2 to 3 feet. Chance of showers
and slight chance of thunderstorms.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Chance
of showers and slight chance of thunderstorms.

$$

AMZ472-474-232145-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
924 AM EDT Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...East winds 5 to 10 knots. Seas 8 to 11 feet with
a dominant period of 14 seconds.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 7 to 10 feet with
a dominant period of 15 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with
a dominant period of 14 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 6
feet. Chance of showers after midnight.
.FRIDAY THROUGH SATURDAY NIGHT...Southeast winds 10 to 15 knots.
Seas 3 to 5 feet. Chance of showers and slight chance of
thunderstorms.
.SUNDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
Chance of showers and slight chance of thunderstorms.

$$

AMZ470-232145-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
924 AM EDT Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...East winds around 5 knots, becoming southeast
in the afternoon. Seas 6 to 9 feet with a dominant period of 15
seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 5 to 7 feet with a
dominant period of 15 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet with
a dominant period of 13 seconds.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 4 to 5
feet. Slight chance of showers after midnight.
.FRIDAY THROUGH SATURDAY NIGHT...Southeast winds 10 to 15 knots.
Seas 3 to 4 feet. Chance of showers and slight chance of
thunderstorms.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Chance
of showers and slight chance of thunderstorms.

$$



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