FZUS52 KJAX 131015 AAA
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia...UPDATED
National Weather Service Jacksonville FL
615 AM EDT Fri Mar 13 2026
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.
AMZ400-140115-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
615 AM EDT Fri Mar 13 2026
.SYNOPSIS...
Winds and seas will remain elevated at small craft advisory levels
through this morning and early afternoon and then subside by this
evening as high pressure shifts to the northeast.
As the high pressure system shifts away, a warm front will gradually
lift northward across the Florida Peninsula. Shower and thunderstorm
chances will increase from south to north late Saturday night
through Sunday night as the front approaches and moves through the
region.
A strong cold front will then move across the area on Monday.
Southwest winds will increase ahead of the front before shifting to
northwest in its wake. Small Craft Advisory conditions are expected
to redevelop over the coastal waters Monday and persist through
at least Tuesday.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 12, 2026 at 0000 UTC...
50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-140115-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
615 AM EDT Fri Mar 13 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...
.TODAY...East winds 15 to 20 knots, becoming northeast 5 to 10
knots this afternoon. Seas 5 to 8 feet, occasionally to 9 feet.
Wave Detail: Northeast 7 feet at 8 seconds. Intracoastal waters
choppy.
.TONIGHT...Northeast winds around 5 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
Intracoastal waters light chop. A slight chance of showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds.
Intracoastal waters light chop. A slight chance of showers in the
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.SUNDAY AND SUNDAY NIGHT...South winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
7 seconds. Intracoastal waters choppy. Showers likely with a
chance of thunderstorms.
.MONDAY...Southwest winds 20 to 25 knots, becoming northwest
25 to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: Northwest 6 feet at 5 seconds and south 6 feet at
7 seconds. Intracoastal waters very rough. Showers with a chance
of thunderstorms through the day, then a chance of showers with a
slight chance of thunderstorms in the evening. A slight chance of
showers after midnight.
.TUESDAY...Northwest winds 20 to 25 knots, becoming north 15 to
20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal
waters rough.
Winds and waves higher in and near thunderstorms.
$$
AMZ470-472-474-140115-
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-
615 AM EDT Fri Mar 13 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
.TODAY...East winds 15 to 20 knots, becoming northeast 5 to
10 knots this afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: Northeast 7 feet at 8 seconds.
.TONIGHT...East winds around 5 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
9 seconds.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Northeast 5 feet at 9 seconds. A slight
chance of showers.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
8 seconds. A chance of showers. A chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 7 seconds. A chance of
thunderstorms. Showers.
.SUNDAY NIGHT...South winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: South 6 feet at 6 seconds and east 2 feet at
9 seconds. Showers likely with a chance of thunderstorms.
.MONDAY...South winds 20 to 25 knots, becoming west 25 to
30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Showers
through the day. A chance of thunderstorms. A chance of showers
in the evening, then a slight chance of showers and thunderstorms
after midnight.
.TUESDAY...Northwest winds 20 to 25 knots, becoming north 15 to
20 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to
4 to 6 feet, occasionally to 8 feet.
Winds and seas higher in and near thunderstorms.
$$
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia...UPDATED
National Weather Service Jacksonville FL
615 AM EDT Fri Mar 13 2026
Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
AMZ400-140115-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
615 AM EDT Fri Mar 13 2026
.SYNOPSIS...
Winds and seas will remain elevated at small craft advisory levels
through this morning and early afternoon and then subside by this
evening as high pressure shifts to the northeast.
As the high pressure system shifts away, a warm front will gradually
lift northward across the Florida Peninsula. Shower and thunderstorm
chances will increase from south to north late Saturday night
through Sunday night as the front approaches and moves through the
region.
A strong cold front will then move across the area on Monday.
Southwest winds will increase ahead of the front before shifting to
northwest in its wake. Small Craft Advisory conditions are expected
to redevelop over the coastal waters Monday and persist through
at least Tuesday.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 12, 2026 at 0000 UTC...
50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-140115-
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-
615 AM EDT Fri Mar 13 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...
.TODAY...East winds 15 to 20 knots, becoming northeast 5 to 10
knots this afternoon. Seas 5 to 8 feet, occasionally to 9 feet.
Wave Detail: Northeast 7 feet at 8 seconds. Intracoastal waters
choppy.
.TONIGHT...Northeast winds around 5 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
Intracoastal waters light chop. A slight chance of showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds.
Intracoastal waters light chop. A slight chance of showers in the
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.SUNDAY AND SUNDAY NIGHT...South winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
7 seconds. Intracoastal waters choppy. Showers likely with a
chance of thunderstorms.
.MONDAY...Southwest winds 20 to 25 knots, becoming northwest
25 to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: Northwest 6 feet at 5 seconds and south 6 feet at
7 seconds. Intracoastal waters very rough. Showers with a chance
of thunderstorms through the day, then a chance of showers with a
slight chance of thunderstorms in the evening. A slight chance of
showers after midnight.
.TUESDAY...Northwest winds 20 to 25 knots, becoming north 15 to
20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal
waters rough.
Winds and waves higher in and near thunderstorms.
$$
AMZ470-472-474-140115-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
615 AM EDT Fri Mar 13 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
.TODAY...East winds 15 to 20 knots, becoming northeast 5 to
10 knots this afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: Northeast 7 feet at 8 seconds.
.TONIGHT...East winds around 5 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
9 seconds.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Northeast 5 feet at 9 seconds. A slight
chance of showers.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
8 seconds. A chance of showers. A chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 7 seconds. A chance of
thunderstorms. Showers.
.SUNDAY NIGHT...South winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: South 6 feet at 6 seconds and east 2 feet at
9 seconds. Showers likely with a chance of thunderstorms.
.MONDAY...South winds 20 to 25 knots, becoming west 25 to
30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Showers
through the day. A chance of thunderstorms. A chance of showers
in the evening, then a slight chance of showers and thunderstorms
after midnight.
.TUESDAY...Northwest winds 20 to 25 knots, becoming north 15 to
20 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to
4 to 6 feet, occasionally to 8 feet.
Winds and seas higher in and near thunderstorms.
$$