282
FZUS52 KJAX 160917
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
517 AM EDT Sun Aug 16 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.

AMZ400-170030-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
517 AM EDT Sun Aug 16 2026

.SYNOPSIS...

Atlantic high pressure will continue to extend its axis westward
across the Florida peninsula today, creating a prevailing westerly
wind pattern across our local waters. Winds will become onshore
across the near shore waters early this afternoon as the sea breeze
progresses slowly inland. Southerly winds will then surge this
evening, but speeds should remain below Caution levels. Isolated to
widely scattered late afternoon and evening thunderstorms will be
possible today, mainly for the waters north of St. Augustine. A
frontal boundary will then push into the southeastern states by
Monday afternoon, with this feature stalling just north of the
Georgia waters by midweek. Chances for mainly afternoon and evening
showers and thunderstorms will increase across our local waters
during the work week. Southwest to westerly winds will continue to
prevail, with a westerly evening wind surge forecast on Monday that
may bring speeds briefly up to Caution levels.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 15, 2026 at 0000 UTC...

 50 nautical miles east of Flagler Beach.
 49 nautical miles east of Saint Augustine Beach.
 56 nautical miles east southeast of Jacksonville Beach.
 68 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-170030-
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-
517 AM EDT Sun Aug 16 2026

.TODAY...Southwest winds 5 to 10 knots, becoming east southeast
10 to 15 knots this afternoon. Seas around 2 feet. Wave Detail:
South 2 feet at 4 seconds and southeast 2 feet at 8 seconds.
Intracoastal waters becoming a light chop. A slight chance of
showers and thunderstorms late this afternoon.
.TONIGHT...South winds 10 to 15 knots, becoming west around 10
knots after midnight. Seas 2 to 3 feet. Wave Detail: South 2 feet
at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal
waters a light chop. A slight chance of showers and thunderstorms
in the evening.
.MONDAY...West winds around 10 knots, becoming southwest 10 to 15
knots late in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A
chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, becoming west
around 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southwest 2 feet at 3 seconds and southeast 2 feet at 8 seconds.
Intracoastal waters becoming a moderate chop. A chance of showers
and thunderstorms in the evening.
.TUESDAY...West winds 10 to 15 knots, becoming south around 10
knots in the afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet
at 3 seconds and east 2 feet at 8 seconds. Intracoastal waters a
light chop. A chance of showers and thunderstorms in the
afternoon.
.TUESDAY NIGHT...South winds 10 to 15 knots, becoming west around
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: South 2
feet at 4 seconds and east 2 feet at 9 seconds. Intracoastal
waters a moderate chop. A chance of showers and thunderstorms in
the evening.
.WEDNESDAY...West winds 5 to 10 knots, becoming south 10 to 15
knots during the afternoon. Seas 2 to 3 feet. Intracoastal waters
a light chop. A chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Southwest winds 5 to 10 knots,
becoming south southeast 10 to 15 knots during the afternoon.
Seas around 2 feet. Intracoastal waters light chop. A chance of
showers and thunderstorms, mainly during the afternoon and
evening.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-170030-
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-
517 AM EDT Sun Aug 16 2026

.TODAY...West winds 5 to 10 knots, becoming south 10 to 15 knots
this afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet
at 4 seconds and southeast 2 feet at 8 seconds. A slight chance
of showers and thunderstorms late this afternoon.
.TONIGHT...Southwest winds 10 to 15 knots, becoming west after
midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
8 seconds and south 2 feet at 4 seconds. A slight chance of
showers and thunderstorms in the evening.
.MONDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: West 2 feet at 4 seconds and southeast 2 feet at
8 seconds. A slight chance of showers and thunderstorms late in
the afternoon.
.MONDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southwest 3 feet at
4 seconds and southeast 2 feet at 8 seconds. A slight chance of
showers and thunderstorms in the evening.
.TUESDAY AND TUESDAY NIGHT...West winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Wave Detail: West 3 feet at
4 seconds and southeast 2 feet at 8 seconds. A slight chance of
showers and thunderstorms.
.WEDNESDAY THROUGH THURSDAY...South winds 10 to 15 knots. Seas
2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and east
2 feet at 10 seconds. A slight chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$