065
FZNT31 KNHC 150917
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
517 AM EDT Tue Jul 15 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...A weak ridge along 29N and E of 75W 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 Wed through Sat as the Atlantic
high pressure shifts north of the area. 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 in the NW portions. A pair
of tropical waves will move through 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 to 4 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 ft.
.WED...E winds less than 10 kt. Seas 3 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 20 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 5 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 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 S of 18N, and 3 ft elsewhere.
.TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, Variable
winds less than 10 kt, becoming E less than 10 kt after
midnight. Seas 4 to 6 ft.
.WED...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.
.WED 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
5 to 7 ft S of 18N, and 3 to 5 ft elsewhere.
.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 20 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Caribbean from 11N to 15N W of 72W

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

SW Caribbean S of 11N

.TODAY...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.WED...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.THU...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.FRI...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.FRI NIGHT...N 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 20 kt. Seas 7 to 10 ft.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. 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 6 to 9 ft.
.FRI...E winds 10 to 20 kt. Seas 6 to 9 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.

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 20 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...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 to 15 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.

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

.TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 6 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 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.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A weak ridge along 29N extends from the central
Atlantic to 75W this morning, while a 1014 mb low has formed
near 29N79.5W. The low is expected to move westward across
Florida later today through tonight, and eventually emerge over
the northeastern Gulf of America by late tonight or early Wed.
Environmental conditions appear favorable and some development of
this system is possible today before it moves over the Florida
Peninsula. High pressure over the central Atlantic will then
build westward across the region and across Florida late tonight
through Sat in the wake of the low pressure. Active thunderstorms
are expected in association with this system over the waters
west of 76W through tonight. The pressure gradient between the
Atlantic ridge building westward and the low pressure will
support moderate to fresh SE to S winds across the Bahamas and
through the NW zones today through early Thu.

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

.TODAY...S winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...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 kt. Seas 4 ft.
.FRI...S winds 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...S winds 10 kt. Seas 3 to 4 ft.
.SAT...W winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...Variable winds less than 10 kt, becoming S less
than 10 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 3 to 5 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...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...SE winds less than 10 kt. Seas 4 to 5 ft.
.FRI...SE winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 4 to 5 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 4 ft.
.SAT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.

Bahamas N of 22N

.TODAY...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...SE winds 10 to 15 kt. Seas 3 to 5 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.

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

.TODAY...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...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 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.

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...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 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 3 to 4 ft.

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

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