Offshore Forecast
Issued by NWS

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439
FZNT26 KNHC 231518
OFFN05

NAVTEX Marine Forecast
NWS National Hurricane Center Miami, FL
1118 AM EDT Sat Aug 23 2025

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

.SYNOPSIS...A tropical wave across the Mona Passage will exit the
area this evening, with lingering showers and thunderstorms
expected this afternoon, mainly across the Caribbean waters. NW
swell from distant extratropical cyclone Erin will build across
the area waters this afternoon through late Sun then begin to
slowly fade into early next week. Central Atlantic high pressure
will build W-SW into the central Bahamas Sun night through mid
week, and bring a return to E trade winds across the area. A
strong tropical wave...AL99...will move quickly westward across
the local area Mon evening through early Tue, accompanied by
strong winds, rough seas, with scattered squalls and
thunderstorms.

San Juan Atlantic Waters

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 5 to 7 ft in NW to N
swell. Scattered showers.
.TONIGHT...E to SE winds 10 kt. Seas 6 to 7 ft in N swell.
Scattered showers.
.SUN...E winds 10 to 15 kt. Seas 7 to 8 ft in N swell. Isolated
showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft in N swell.
.MON...E winds 15 to 20 kt. Seas 7 to 8 ft.
.MON NIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft.
.TUE...E winds 15 kt. Seas 6 to 7 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...E to SE winds 10 to 15 kt. Seas 5 to 6 ft.
.WED NIGHT...E to SE winds 10 kt. Seas 4 to 5 ft.

San Juan Caribbean Waters

.THIS AFTERNOON...E to SE winds 10 to 15 kt. Seas 3 to 4 ft.
Scattered showers.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Isolated
showers.
.SUN...E winds 15 to 20 kt. Seas 4 to 6 ft. Isolated showers.
.SUN NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. Isolated
showers.
.MON...NE to E winds 15 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...NE to E winds 20 to 25 kt. Seas 6 to 9 ft.
.TUE...E winds 15 to 20 kt. Seas 6 to 9 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft in NE to E
swell.
.WED...E to SE winds 15 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft.