Offshore Forecast
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
111
FZNT31 KNHC 121955
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
255 PM EST Tue Nov 12 2024

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....Disorganized showers and thunderstorms over the
central Caribbean are associated with a tropical wave/broad area
of low pressure. Environmental conditions appear conducive for
development, and a tropical depression is likely to form within
the next two to three days while the system moves slowly
westward into the western Caribbean. Afterward, further
development is likely while the disturbance meanders over the
western Caribbean Sea through the weekend. The system is
forecast begin moving slowly northwestward by early next week.
Interests across the western and northwestern Caribbean Sea
should monitor the progress of this system. There is a medium
chance for this system to develop. Elsewhere, large N swell
associated with a stationary front NE of Puerto Rico will
continue to impact the NE Caribbean Passages and the Tropical
Atlantic waters through tonight.

NW Caribbean W of 85W

.TONIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.WED...NE winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...NE winds less than 10 kt, shifting to N after
midnight. Seas 2 ft or less, building to 3 ft after midnight.
.THU...N winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...N winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...N winds 10 to 20 kt. Seas 7 to 10 ft.
.SAT NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft.
.SUN...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft.

Caribbean N of 15N between 72W and 85W

.TONIGHT...S of 18N, E winds less than 10 kt. Elsewhere, NE
winds less than 10 kt, increasing to 10 to 15 kt after midnight.
Seas 2 ft or less.
.WED...E winds less than 10 kt S of 18N, and NE 10 to 15 kt
elsewhere. Seas 3 to 4 ft.
.WED NIGHT...S of 18N, E winds less than 10 kt, shifting to SE
after midnight. Elsewhere, 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 4 to 6 ft.
.FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.SAT...E winds 15 to 25 kt. Seas 6 to 9 ft.
.SAT NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft.
.SUN...E winds 15 to 25 kt. Seas 8 to 13 ft.
.SUN NIGHT...E winds 20 to 30 kt. Seas 9 to 14 ft.

Caribbean from 11N to 15N W of 72W

.TONIGHT...W winds less than 10 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less.
.WED...SW winds 10 to 15 kt within 90 nm of coast of Colombia,
and W less than 10 kt elsewhere. Seas 2 ft or less, building to
3 ft in the afternoon.
.WED NIGHT...SW winds less than 10 kt. Seas 3 ft.
.THU...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SW winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...SW winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...SW winds 15 to 25 kt. Seas 6 to 9 ft.
.SUN...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...SW winds 10 to 20 kt. Seas 7 to 10 ft.

SW Caribbean S of 11N

.TONIGHT...SW winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight.
.WED...SW winds 10 to 15 kt. Seas 3 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 ft or less.
.THU...SW winds 10 to 15 kt. Seas 3 ft.
.THU NIGHT...SW winds 10 to 20 kt. Seas 3 ft.
.FRI...SW winds 10 to 20 kt. Seas 3 to 4 ft.
.FRI NIGHT...SW winds 10 to 20 kt. Seas 3 to 4 ft.
.SAT...SW winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN...SW winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean between 64W and 72W

.TONIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere.
.WED...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere.
.WED NIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere.
.THU...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.
.FRI...SE winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.SAT...SE winds less than 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.SUN...E winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.WED...SE winds less than 10 kt. Seas 5 to 7 ft.
.WED NIGHT...S winds less than 10 kt. Seas 4 to 6 ft.
.THU...SW winds less than 10 kt. Seas 4 to 6 ft.
.THU NIGHT...S winds less than 10 kt. Seas 3 to 5 ft.
.FRI...S winds less than 10 kt. Seas 4 to 6 ft.
.FRI NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft.
.SAT...SE winds less than 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 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...SE winds less than 10 kt. Seas 4 to 6 ft.
.THU NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.FRI...E winds less than 10 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 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 4 to 6 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Moderate to fresh E to SE winds and rough seas will
continue to affect the offshore waters E of the Bahamas as a
frontal system extends across the area. A stationary front is
from 19N57W to 23N64W, then a warm front continues from that
point to 31N69W. Seas associated with this system will gradually
subside starting this evening. The next cold front will move off
the southeastern U.S. coast reaching from Bermuda to the central
Bahamas offshore waters tonight, from 31N55W to the Virgin
Islands Wed evening, then move E of the area by Thu evening.
Fresh to strong N to NW winds and rough seas will follow this
front and affect most of the area through Thu. A third front may
enter the NW offshore waters Thu night into Fri, affecting the
offshore waters N of 27N with mainly moderate to fresh winds
through the weekend.

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

.TONIGHT...NE winds 15 to 20 kt. Seas 6 to 8 ft.
.WED...NE winds 20 kt. Seas 7 to 9 ft.
.WED NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft.
.THU...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.THU NIGHT...SE winds 10 to 15 kt, shifting to SW after
midnight. Seas 6 to 7 ft.
.FRI...NW winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI NIGHT...N winds 15 to 20 kt. Seas 8 to 11 ft.
.SAT...N winds 15 to 20 kt. Seas 8 to 11 ft.
.SAT NIGHT...N winds 10 to 15 kt. Seas 7 to 9 ft.
.SUN...N winds 10 to 15 kt. Seas 6 to 8 ft.
.SUN NIGHT...NE winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 5 to 7 ft.

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

.TONIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft.
.WED...NE winds 15 to 25 kt. Seas 8 to 11 ft.
.WED NIGHT...NE winds 15 to 25 kt. Seas 9 to 13 ft.
.THU...NE winds 10 to 15 kt. Seas 8 to 13 ft.
.THU NIGHT...NE winds 10 kt, shifting to NW less than 10 kt
after midnight. Seas 8 to 11 ft.
.FRI...W winds 10 to 15 kt, increasing to 15 to 25 kt in the
afternoon. Seas 8 to 11 ft.
.FRI NIGHT...NW winds 15 to 25 kt. Seas 9 to 14 ft.
.SAT...NW winds 15 to 25 kt. Seas 10 to 14 ft.
.SAT NIGHT...NW winds 15 to 20 kt. Seas 9 to 12 ft.
.SUN...NW winds 10 to 20 kt. Seas 7 to 10 ft.
.SUN NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 7 to 10 ft.

Bahamas N of 22N

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

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

.TONIGHT...SE winds 10 to 15 kt, shifting to N after midnight.
Seas 6 to 8 ft.
.WED...N winds 10 to 20 kt. Seas 6 to 9 ft.
.WED NIGHT...NE winds 15 to 20 kt. Seas 7 to 10 ft.
.THU...NE winds 10 to 20 kt. Seas 8 to 10 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 8 to 10 ft.
.FRI...NE winds less than 10 kt, shifting to S in the afternoon.
Seas 8 to 9 ft.
.FRI NIGHT...W winds 10 to 20 kt. Seas 7 to 9 ft.
.SAT...NW winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT NIGHT...N winds 10 to 15 kt. Seas 7 to 10 ft.
.SUN...N winds 10 to 15 kt. Seas 7 to 9 ft.
.SUN NIGHT...NE winds 10 kt. Seas 6 to 8 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 5 to 7 ft.
.WED...S winds less than 10 kt, shifting to NW in the afternoon.
Seas 4 to 6 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 8 ft.
.FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft.
.SAT...NW winds less than 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft.
.SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft.

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

.TONIGHT...SE winds 10 to 15 kt. Seas 7 to 9 ft.
.WED...S winds 10 kt. Seas 6 to 7 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 6 ft.
.THU...NW winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...N winds 10 to 15 kt, shifting to NE after midnight.
Seas 6 to 8 ft.
.FRI...E winds less than 10 kt. Seas 6 to 9 ft.
.FRI NIGHT...SE winds 10 kt. Seas 8 to 9 ft.
.SAT...S winds 10 to 15 kt. Seas 8 to 9 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 7 to 8 ft.
.SUN...SW winds 10 to 15 kt. Seas 6 to 7 ft.
.SUN NIGHT...Variable winds less than 10 kt, becoming W less
than 10 kt after midnight. Seas 5 to 7 ft.