438
FZNT26 KNHC 210810
OFFN05

NAVTEX Marine Forecast
NWS National Hurricane Center Miami, FL
410 AM EDT Thu Aug 21 2025

...Please refer to Coastal Waters Forecasts (CWF) available
through NOAA Weather Radio and other means for detailed
Coastal Waters Forecasts...

.SYNOPSIS...In the wake of Hurricane Erin, central Atlantic high
pressure will build west-southwestward toward the Bahamas. This
will allow for the normal trade wind flow to return to the
regional waters through the period. Long-period northerly swell
generated by Erin will begin to impact the Atlantic waters on
Fri. Otherwise, shower and thunderstorm activity has become a
bit more concentrated in association with a tropical wave located
a few hundred miles east of the Leeward Islands. Environmental
conditions appear conducive for further development of this
system, and a tropical depression is likely to form this weekend
while it moves near or to the north of the northern Leeward
Islands.

San Juan Atlantic Waters

.TODAY...E winds 10 to 15 kt. Seas 5 to 6 ft. Isolated showers.
.TONIGHT...NE to E winds 10 to 15 kt. Seas 5 to 6 ft. Isolated
showers.
.FRI...NE to E winds 10 to 15 kt. Seas 5 to 6 ft. Isolated
showers.
.FRI NIGHT...NE to E winds 5 to 10 kt. Seas 5 to 6 ft in NW to N
swell. Isolated showers.
.SAT...E to SE winds 5 to 10 kt. Seas 5 to 7 ft in NW to N
swell.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 6 to 8 ft in N swell.
.SUN...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in N swell.
.SUN NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft in N swell.
.MON...E winds 15 kt. Seas 7 to 8 ft in N to NE swell.
.MON NIGHT...E winds 15 kt. Seas 7 to 8 ft in N to NE swell.

San Juan Caribbean Waters

.TODAY...E winds 10 to 15 kt. Seas 4 to 5 ft. Isolated showers.
.TONIGHT...NE to E winds 15 kt. Seas 3 to 5 ft. Isolated showers.
.FRI...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Isolated
showers.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered
showers and isolated thunderstorms.
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds 15 kt. Seas 4 to 6 ft.
.MON...E winds 15 kt. Seas 5 to 6 ft.
.MON NIGHT...NE to E winds 15 to 20 kt. Seas 5 to 7 ft.