023 
FZUS52 KJAX 131457
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
957 AM EST Fri Dec 13 2019

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.

AMZ400-140000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
957 AM EST Fri Dec 13 2019

.SYNOPSIS...

Warm front will lift north of the waters today followed by a low
pressure system crossing the waters tonight. A cold front will
push across the waters early Saturday. Locally heavy rainfall and
embedded strong thunderstorms possible through early Saturday 
morning. Weak high pressure will build into the region Sunday and 
Monday. The next cold frontal passage is expected late on Tuesday.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Dec 12, 2019 at 1200 UTC...

 64 nautical miles east northeast of Flagler Beach.
 64 nautical miles east northeast of Saint Augustine Beach.
 71 nautical miles east of Jacksonville Beach.
 99 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-140000-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
957 AM EST Fri Dec 13 2019

...SMALL CRAFT EXERCISE CAUTION...

.REST OF TODAY...Southeast winds 10 to 15 knots becoming south
southwest in the afternoon. Seas 4 to 6 feet with occasional seas
up to 8 feet. Dominant period 9 seconds. Inland waters a light 
chop. Showers and a slight chance of thunderstorms. 
.TONIGHT...South southwest winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant period 8 seconds. Inland
waters a moderate chop. Showers and a chance of thunderstorms. 
.SATURDAY...West winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 8 seconds. Inland waters
choppy. A chance of showers. 
.SATURDAY NIGHT...West northwest winds 15 to 20 knots. Seas 2 to
4 feet. Dominant period 9 seconds. Inland waters a moderate chop. 
.SUNDAY...North northwest winds around 5 knots becoming east in
the afternoon. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters
smooth. 
.SUNDAY NIGHT AND MONDAY...South winds 10 to 15 knots. Seas 2 to
4 feet. 
.MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. 
.TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 4 feet.
Showers likely and a slight chance of thunderstorms. 

$$

AMZ470-472-474-140000-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
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-
957 AM EST Fri Dec 13 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF TODAY...Southeast winds 15 to 20 knots becoming south
southwest in the afternoon. Seas 6 to 9 feet with occasional seas
up to 11 feet. Dominant period 9 seconds. Showers and a slight chance of
thunderstorms. 
.TONIGHT...South southwest winds 10 to 15 knots becoming
southwest 20 to 25 knots after midnight. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 8 seconds. Showers and a
chance of thunderstorms. 
.SATURDAY...West winds 20 to 25 knots with gusts to around
35 knots. Seas 6 to 9 feet with occasional seas up to 11 feet
subsiding to 5 to 7 feet with occasional seas up to 9 feet in the
afternoon. Dominant period 8 seconds. A chance of showers. 
.SATURDAY NIGHT...West northwest winds 15 to 20 knots. Seas 5 to
7 feet with occasional seas up to 9 feet. Dominant period 9 seconds. 
.SUNDAY...North northwest winds 5 to 10 knots becoming northeast
in the afternoon. Seas 3 to 5 feet with occasional seas up to
6 feet. Dominant period 9 seconds. 
.SUNDAY NIGHT AND MONDAY...South winds 10 to 15 knots. Seas 4 to
6 feet with occasional seas up to 8 feet. 
.MONDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. A chance of showers. 
.TUESDAY...Southwest winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Showers likely and a slight chance
of thunderstorms. 

$$