Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 170638
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
238 AM EDT Sat May 17 2025

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.

AMZ400-172145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
238 AM EDT Sat May 17 2025

.SYNOPSIS...

Atlantic high pressure will continue to extend its axis westward
across the Florida peninsula and into the eastern Gulf through
early next week, creating a prevailing west southwesterly wind
flow across our local waters. Meanwhile, a frontal boundary
currently pushing across the Ohio and Tennessee Valleys will stall
to the north of our area on Sunday, with showers and possibly a
few strong thunderstorms possibly impacting the Georgia waters
during the late afternoon and evening hours. This front will lift
northward early next week in advance of a cold front that will
move across our local waters on Wednesday night and early
Thursday. Scattered showers and thunderstorms may accompany this
frontal passage on Wednesday afternoon and night. High pressure
will then build into the southeastern states late this week and
during the beginning of Memorial Day weekend in the wake of this
frontal passage.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
May 15, 2025 at 1200 UTC...

 71 nautical miles east of Flagler Beach.
 80 nautical miles east of Saint Augustine Beach.
 89 nautical miles east of Jacksonville Beach.
 94 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-172145-
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-
238 AM EDT Sat May 17 2025

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

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-172145-
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-
238 AM EDT Sat May 17 2025

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

Winds and seas higher in and near thunderstorms.

$$