878
FZNT31 KNHC 160852
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
452 AM EDT Wed Jul 16 2025

Marine Weather HF Voice Broadcast for the Tropical N Atlantic
from 07N to 19N W of 55W, the N Atlantic from 19N to
31N W of 55W including the Bahamas, and the Caribbean Sea.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

Synopsis for Caribbean Sea and Tropical N Atlantic from
07N to 19N W of 55W

.SYNOPSIS...Central Atlantic high pressure will gradually build
westward across Florida and into the eastern Gulf of America
through Sat. Fresh to strong trades and rough seas over the
south- central Caribbean will expand across most of the central
portions of the basin this evening through Sat morning as the
Atlantic high pressure gradually shifts westward to near 75W.
These winds are expected to contract in aerial coverage late Sat
through Sun as the high pressure weakens. Fresh E winds are
expected in the Gulf of Honduras Thu through Sat. Moderate to
fresh winds and moderate seas are expected in the eastern
Caribbean through the period while gentle to moderate winds and
slight to moderate seas will prevail NW portions through Fri. A
pair of tropical waves across the eastern Caribbean and Tropical
Atlantic waters this morning will move across the basin through
Fri, mainly producing active weather across the SW Caribbean
waters Fri through Sat.

NW Caribbean W of 85W

.TODAY...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt S of 18N, and E less than 10 kt
elsewhere. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 20 kt S of 18N, and E less than 10 kt
elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds
less than 10 kt, increasing to 10 to 15 kt after midnight. Seas
6 to 8 ft S of 18N, and 3 to 5 ft elsewhere.
.FRI...E winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 20 to 25 kt within 90 nm of coast of Colombia,
and E 10 to 20 kt elsewhere. Seas 6 to 9 ft.
.TONIGHT...E winds 20 to 25 kt within 90 nm of coast of
Colombia, and NE 15 to 25 kt elsewhere. Seas 8 to 11 ft within
90 nm of coast of Colombia, and 6 to 9 ft elsewhere.
.THU...E winds 15 to 25 kt. Seas 7 to 10 ft.
.THU NIGHT...E winds 20 to 30 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 8 to 11 ft.
.FRI...E winds 15 to 25 kt. Seas 8 to 11 ft.
.FRI NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft.
.SAT...E winds 15 to 25 kt. Seas 8 to 12 ft.
.SAT NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft.
.SUN...E winds 15 to 25 kt. Seas 6 to 9 ft.
.SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.

SW Caribbean S of 11N

.TODAY...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 9 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.SAT...NE winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft.
.SUN...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.SUN NIGHT...NE winds less than 10 kt. Seas 6 to 8 ft.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.THU...Gulf of Venezuela, E winds 20 to 25 kt, diminishing to
10 to 20 kt in the afternoon. Elsewhere, E winds 10 to 20 kt.
Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft elsewhere.
.THU NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 6 to 9 ft.
.FRI...E winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.

Offshore Leeward Islands and adjacent ATLC waters from 15N to
19N W of 55W

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...E winds 10 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Offshore Windward Islands and adjacent ATLC waters from 07N to
15N W of 55W

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...1026 mb high pressure centered near 32N61W extends a
ridge westward to offshore the Georgia and South Carolina
coasts. This high pressure will build gradually westward across
the region and across Florida today through Sat as low pressure
across the NE Gulf of America shifts westward. The pressure
gradient between the Atlantic ridge and this low pressure will
support moderate to fresh SE to S winds across the Bahamas and
through the NW zones through early Thu, then continue across the
southern Bahamas through Fri night as the high slides west to
75W. High pressure will then weaken over the weekend.

ATLC waters from 27N to 31N W of 77W

.TODAY...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.THU...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI...S winds 10 kt. Seas 4 ft.
.FRI NIGHT...S winds less than 10 kt. Seas 3 to 4 ft.
.SAT...W winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds less than 10 kt. Seas 3 to 4 ft.
.SUN...SW winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.

ATLC waters from 27N to 31N between 65W and 77W

.TODAY...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.TONIGHT...SE winds less than 10 kt. Seas 4 to 5 ft.
.THU...SE winds less than 10 kt. Seas 4 to 5 ft.
.THU NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 4 to 5 ft.
.FRI...Variable winds less than 10 kt. Seas 4 to 5 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 4 to 5 ft.
.SAT...Variable winds less than 10 kt. Seas 4 ft.
.SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SUN...S winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...S winds less than 10 kt. Seas 3 to 4 ft.

Bahamas N of 22N

.TODAY...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft.

ATLC waters from 22N to 27N between 65W and the Bahamas

.TODAY...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 kt. Seas 4 to 5 ft.
.SAT NIGHT...E winds 10 kt. Seas 4 to 5 ft.
.SUN...SE winds 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SE winds 10 kt. Seas 3 to 4 ft.

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

ATLC waters from 19N to 22N between 55W and 65W

.TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THU...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 5 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 ft.
.SAT...E winds 10 to 15 kt. Seas 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.