688
FZNT31 KNHC 020904
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
504 AM EDT Thu Oct 2 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 pressure gradient will persist across the
basin through the forecast period, supporting mainly moderate or
lighter easterly winds and slight to moderate seas. Meanwhile,
northerly swell from tropical cyclone Imelda will reach the
passages of the NE Caribbean, allowing rough seas Fri through
early next week.

NW Caribbean W of 85W

.TODAY...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less.
.TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less.
.FRI NIGHT...NE winds less than 10 kt, shifting to E after
midnight. Seas 2 ft or less.
.SAT...SE winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft after midnight.
.SUN...E winds 10 to 20 kt. Seas 3 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 ft.
.TONIGHT...S of 18N, E winds 10 to 15 kt. Elsewhere, NE winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
3 ft in the evening, subsiding to 2 ft or less.
.FRI...S of 18N, E winds 10 to 15 kt, increasing to 15 to 25 kt
in the afternoon. Elsewhere, E winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 to 4 ft S of 18N, and 2 ft or less elsewhere.
.SAT...E winds 10 to 15 kt S of 18N, and SE less than 10 kt
elsewhere. Seas 2 ft or less.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.SUN...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft
in the afternoon.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 ft.
.MON...E winds 10 to 20 kt. Seas 3 ft.

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 10 to 15 kt. Seas 3 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 ft.
.FRI...Within 90 nm of coast of Colombia, E winds 10 to 15 kt.
Elsewhere, E winds 10 to 15 kt, increasing to 15 to 25 kt in the
afternoon. Seas 3 to 4 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.SAT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.SUN...SE winds 10 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft.

SW Caribbean S of 11N

.TODAY...SE winds less than 10 kt, shifting to S in the
afternoon. Seas 2 ft or less.
.TONIGHT...NW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 2 ft or less.
.FRI...W winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...N winds less than 10 kt, shifting to W after
midnight. Seas 2 ft or less.
.SAT...S winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft or less.
.SAT NIGHT...SE winds 10 to 20 kt. Seas 2 ft or less.
.SUN...S winds 10 to 15 kt. Seas 2 ft or less.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.MON...S winds less than 10 kt, shifting to W in the afternoon.
Seas 2 ft or less.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.FRI...E winds 10 to 20 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 to 5 ft elsewhere.
.SAT NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere.
.SUN...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela,
and 4 to 6 ft elsewhere.
.SUN NIGHT...E winds 10 to 15 kt. Gulf of Venezuela, seas 2 ft
or less, building to 3 ft after midnight. Elsewhere, seas 4 to
6 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.

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

.TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...NE winds less than 10 kt. Seas 3 to 5 ft.
.FRI...NE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 4 to 6 ft.
.FRI NIGHT...NE winds less than 10 kt, shifting to E after
midnight. Seas 6 to 8 ft.
.SAT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 6 to 9 ft.
.SUN...E winds 10 to 15 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.MON...E winds 10 to 15 kt. Seas 6 to 8 ft.

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

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...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 3 to 5 ft.
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 15 kt. Seas 5 to 7 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Imelda is near 32.8N 61.9W at 5 AM EDT,
and
is moving east-northeast at 26 kt. Maximum sustained winds are
75 kt with gusts to 90 kt, and the minimum central pressure is
975 mb. Imelda will continue to move away from our waters over
the next few days, allowing for ridging to build across the SW N
Atlantic. Long period northerly swell generated by former
hurricane Humberto and Hurricane Imelda will affect just about
the entire forecast domain through early next week. Strong to
near gale-force winds will shift eastward north of 25N and east
of 73W tonight through early Sat before lifting northward.
Moreover, a building ridge over the eastern United States and a
developing area of low pressure off southern Florida will force
fresh to strong E winds across the waters off NE Florida and the
NW Bahamas today through the weekend. Looking ahead, a tropical
wave is expected to move off the coast of Africa over the next
day or two. Thereafter, this wave is forecast to interact with
another disturbance in the eastern tropical Atlantic, and some
slow development of the combined feature is possible as the
system moves westward to west-northwestward at 15 to 20 mph.

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

.TODAY...NE winds 15 to 25 kt. Seas 9 to 13 ft.
.TONIGHT...E winds 15 to 25 kt. Seas 10 to 13 ft.
.FRI...E winds 15 to 25 kt. Seas 10 to 13 ft.
.FRI NIGHT...E winds 15 to 25 kt. Seas 10 to 12 ft.
.SAT...E winds 15 to 25 kt. Seas 9 to 12 ft.
.SAT NIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft.
.SUN...SE winds 15 to 25 kt. Seas 8 to 12 ft.
.SUN NIGHT...SE winds 15 to 25 kt. Seas 8 to 11 ft.
.MON...E winds 10 to 20 kt. Seas 7 to 10 ft.

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

...TROPICAL STORM WARNING...

.TODAY...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to
25 kt W of 70W, and N 25 to 35 kt elsewhere. Seas 11 to 16 ft W
of 70W, and 16 to 21 ft elsewhere.
.TONIGHT...NE winds 15 to 25 kt. Seas 11 to 16 ft W of 70W, and
14 to 19 ft elsewhere.
.FRI...E winds 15 to 25 kt. Seas 12 to 15 ft.
.FRI NIGHT...E winds 15 to 25 kt. Seas 11 to 13 ft.
.SAT...E winds 15 to 25 kt W of 70W, and E 10 to 20 kt
elsewhere. Seas 10 to 12 ft.
.SAT NIGHT...E winds 15 to 25 kt W of 70W, and E 10 to 20 kt
elsewhere. Seas 9 to 11 ft.
.SUN...E winds 15 to 25 kt. Seas 8 to 11 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 8 to 10 ft.
.MON...E winds 10 to 20 kt. Seas 7 to 10 ft.

Bahamas N of 22N

.TODAY...N winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...SE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft.

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

.TODAY...N winds 10 to 20 kt. Seas 8 to 13 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 9 to 14 ft.
.FRI...E winds 10 to 20 kt. Seas 10 to 14 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 9 to 13 ft.
.SAT...E winds 10 to 20 kt. Seas 9 to 12 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.
.SUN...E winds 10 to 20 kt. Seas 8 to 11 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.
.MON...E winds 10 to 20 kt. Seas 8 to 10 ft.

ATLC waters S of 22N W of 65W

.TODAY...W winds less than 10 kt. Seas 3 to 5 ft.
.TONIGHT...NE winds less than 10 kt. Seas 4 to 6 ft.
.FRI...NE winds less than 10 kt. Seas 5 to 7 ft.
.FRI NIGHT...NE winds less than 10 kt, shifting to E after
midnight. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.

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

.TODAY...SE winds 10 to 15 kt, shifting to S in the afternoon.
Seas 4 to 6 ft.
.TONIGHT...SW winds less than 10 kt, shifting to E after
midnight. Seas 6 to 8 ft.
.FRI...E winds less than 10 kt. Seas 7 to 10 ft.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 8 to 11 ft.
.SAT...E winds 10 to 15 kt. Seas 9 to 11 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 9 to 11 ft.
.SUN...E winds 10 to 15 kt. Seas 9 to 10 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 9 to 10 ft.
.MON...E winds 10 to 15 kt. Seas 8 to 9 ft.