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 29 30
000
FZNT31 KNHC 100205
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1005 PM EDT Tue Apr 9 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...The pressure gradient between high pressure across
the western Atlantic and low pressure over Colombia will support
fresh to strong winds across most of the central Caribbean,
pulsing to near gale-force at night off of Colombia through the
next several nights. The area of high pressure will also support
fresh to strong winds in the Windward Passage, south of
Hispaniola, and in the Gulf of Honduras. Winds will start to
diminish the end of the week as the high pressure shifts
eastward and well NE of the region. Looking ahead, a cold front
is expected to reach the Yucatan Channel Thu night, then stall
and weaken over the NW Caribbean late Fri into Sat.

NW Caribbean W of 85W

.OVERNIGHT...SE winds 15 to 25 kt. Seas 7 to 10 ft.
.WED...SE winds 15 to 25 kt. Seas 7 to 10 ft.
.WED NIGHT...SE winds 15 to 25 kt. Seas 6 to 9 ft.
.THU...SE winds 15 to 25 kt. Seas 6 to 9 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE winds 10 to 20 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 4 to 5 ft.

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...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...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

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

SW Caribbean S of 11N

.OVERNIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft.
.SAT...NE winds 15 to 25 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 7 to 10 ft.
.SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.

Caribbean between 64W and 72W

.OVERNIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.WED...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere.
.WED NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.THU...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 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

.OVERNIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 6 to 9 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.THU...E winds 10 to 20 kt. Seas 6 to 9 ft.
.THU NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft.
.FRI...E winds 15 to 25 kt. Seas 6 to 9 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.

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

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...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 20 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT NIGHT...E winds 10 to 15 kt. 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 9 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Large NW swell will across the NE waters will shift
E of the area Wed. High pressure in the western Atlantic will
drift to near Bermuda by Wed night, then shift E Thu and Fri. The
associated ridge will support moderate to fresh winds across the
Great Bahama Bank and the Caribbean approaches through tonight,
becoming fresh to strong Wed through Thu. Fresh southerly winds
will develop offshore of Florida and N of the Bahamas on Wed
evening and increase to strong to near gale- force Wed night
through Thu, ahead of an approaching cold front. The front is
expected to cross the Florida Peninsula Thu night, with gales
possible Thu and Thu night N of 30N and E of the front. The front
will reach from 31N74W to the NW Bahamas Fri morning, and from
near Bermuda to the central Bahamas Sat morning. The front will
then stall and dissipate through the remainder of the upcoming
weekend.

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

...GALE WARNING...
...GALE CONDITIONS POSSIBLE THU NIGHT...

.OVERNIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.THU...S winds 25 to 35 kt. Seas 8 to 11 ft.
.THU NIGHT...SW winds 25 to 35 kt. Seas 8 to 11 ft.
.FRI...W winds 15 to 25 kt. Seas 7 to 10 ft.
.FRI NIGHT...NW winds 10 to 20 kt. Seas 6 to 8 ft.
.SAT...NW winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...N winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 4 to 6 ft.
.SUN...SE winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...S winds 10 kt. Seas 3 to 4 ft.

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

...GALE CONDITIONS POSSIBLE THU NIGHT...

.OVERNIGHT...E winds 10 to 15 kt W of 70W, and NE less than
10 kt elsewhere. Seas 6 to 8 ft.
.WED...SE winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 5 to 7 ft.
.WED NIGHT...W of 70W, SE 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.
.THU...S to SW winds 25 to 35 kt W of 75W, and S 20 to 30 kt
elsewhere W of 70W. E of 70W, SE winds 10 to 15 kt. Seas 6 to 8
ft.
.THU NIGHT...SE winds 15 to 25 kt. Seas 6 to 9 ft.
.FRI...S winds 15 to 25 kt. Seas 7 to 10 ft.
.FRI NIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...NW winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT NIGHT...N winds less than 10 kt. Seas 6 to 8 ft.
.SUN...E winds less than 10 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 kt. Seas 5 to 7 ft.

Bahamas N of 22N

.OVERNIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.SAT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft.
.WED...E winds 10 to 15 kt. Seas 7 to 8 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THU...E winds 15 to 20 kt. Seas 7 to 8 ft.
.THU NIGHT...SE winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI...SE winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 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.

ATLC waters S of 22N W of 65W

.OVERNIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.WED...E winds 10 to 20 kt. Seas 6 to 9 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THU...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 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 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 20 kt. Seas 5 to 7 ft.

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

.OVERNIGHT...NE winds 10 to 20 kt. Seas 7 to 9 ft.
.WED...NE winds 15 to 20 kt. Seas 8 to 9 ft.
.WED NIGHT...NE winds 15 to 20 kt. Seas 8 to 9 ft.
.THU...E winds 15 to 20 kt. Seas 8 to 10 ft.
.THU NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft.
.FRI...E winds 15 to 20 kt. Seas 8 to 10 ft.
.FRI NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft.
.SAT...E winds 15 to 20 kt. Seas 8 to 10 ft.
.SAT NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft.
.SUN...E winds 15 to 20 kt. Seas 8 to 10 ft.
.SUN NIGHT...E winds 15 to 20 kt. Seas 8 to 10 ft.


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.