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
000
FZNT31 KNHC 230255
OFFN20

MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
955 PM EST WED FEB 22 2017

MARINE WEATHER HF VOICE BROADCAST FOR THE TROPICAL N ATLANTIC
FROM 07N TO 22N BETWEEN 55W AND 64W...THE SW N ATLANTIC S OF
31N W OF 65W INCLUDING 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 ATLC FROM 07N TO 19N
BETWEEN 55W AND 64W

.SYNOPSIS...FRESH TO STRONG WINDS ACCOMPANY A COLD FRONT AS IT
CONTINUE TO PASS E ACROSS THE NW CARIBBEAN THROUGH TONIGHT. THE
FRONT WILL EXTEND FROM E CUBA TO NE NICARAGUA ADJACENT WATERS
THU MORNING WITH FRESH TO STRONG WINDS DEVELOPING AHEAD OF IT IN
THE WINDWARD PASSAGE THROUGH EARLY FRIDAY MORNING. THE FRONT
WILL THEN STALL WHILE GRADUALLY DISSIPATES THROUGH FRIDAY NIGHT.
STRONG NOCTURNAL FLOW WILL DEVELOP ALONG THE NW COAST OF
COLOMBIA ON SAT NIGHT WITH MINIMAL GALE FORCE WINDS POSSIBLE ON
SUN NIGHT AND MON NIGHT.

NW CARIBBEAN W OF 85W

.TONIGHT...W WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.THU...NW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.THU NIGHT...E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
.FRI...SE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE MORNING...
SUBSIDING TO 2 FT OR LESS.
.FRI NIGHT...E WINDS 10 TO 15 KT. SEAS 3 FT.
.SAT...E WINDS LESS THAN 10 KT. SEAS 3 FT.
.SAT NIGHT...E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS...BUILDING
TO 3 FT AFTER MIDNIGHT.
.SUN...E WINDS 10 TO 15 KT. SEAS 3 FT.
.SUN NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
.MON...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.MON NIGHT...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.

CARIBBEAN N OF 15N BETWEEN 72W AND 85W

.TONIGHT...SW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.THU...W WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.THU NIGHT...SW WINDS LESS THAN 10 KT S OF 18N... AND W 10 TO
15 KT ELSEWHERE. SEAS 3 TO 5 FT.
.FRI...SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.FRI NIGHT...SW WINDS LESS THAN 10 KT IN THE EVENING...BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE EVENING...
SUBSIDING TO 2 FT OR LESS.
.SAT...SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.SAT NIGHT...NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.SUN...E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.SUN NIGHT...E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS...BUILDING
TO 3 TO 4 FT AFTER MIDNIGHT.
.MON...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.MON NIGHT...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.

CARIBBEAN FROM 11N TO 15N W OF 72W

...GALE CONDITIONS POSSIBLE...

.TONIGHT...NE WINDS 10 KT WITHIN 90 NM OF COAST OF COLOMBIA...
AND VARIABLE WINDS LESS THAN 10 KT ELSEWHERE. SEAS 2 FT OR LESS.
.THU...SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.THU NIGHT...WITHIN 90 NM OF COAST OF COLOMBIA...NE WINDS 10 KT.
ELSEWHERE...VARIABLE WINDS LESS THAN 10 KT...BECOMING E LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 2 FT OR LESS.
.FRI...SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.FRI NIGHT...E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS...
BUILDING TO 3 TO 4 FT AFTER MIDNIGHT.
.SAT...E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
.SAT NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.SUN...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.SUN NIGHT...NE WINDS 30 TO 35 KT ALONG COAST OF COLOMBIA...10
TO 20 KT ELSEWHERE. SEAS 5 TO 10 FT.
.MON...NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
.MON NIGHT...NE WINDS 25 TO 35 KT. SEAS 8 TO 13 FT TO 81W.

SW CARIBBEAN S OF 11N

.TONIGHT...NE WINDS LESS THAN 10 KT IN THE EVENING...BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.THU...VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.THU NIGHT...NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.FRI...E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.FRI NIGHT...NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
.SAT...NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS...BUILDING TO
3 FT IN THE AFTERNOON.
.SAT NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.SUN...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.SUN NIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.MON...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.MON NIGHT...NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.

CARIBBEAN BETWEEN 64W AND 72W

.TONIGHT...E WINDS 10 TO 15 KT GULF OF VENEZUELA...AND E LESS
THAN 10 KT ELSEWHERE. SEAS 3 FT.
.THU...NE WINDS 10 TO 15 KT GULF OF VENEZUELA... AND SE LESS
THAN 10 KT ELSEWHERE. SEAS 3 FT.
.THU NIGHT...GULF OF VENEZUELA...E WINDS 10 TO 15 KT.
ELSEWHERE...E WINDS LESS THAN 10 KT...SHIFTING TO SE AFTER
MIDNIGHT. SEAS 3 TO 4 FT.
.FRI...GULF OF VENEZUELA...NE WINDS 10 TO 15 KT. ELSEWHERE...SE
WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT IN THE
AFTERNOON. 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 5 FT.
.SUN...E WINDS 10 TO 15 KT. SEAS 3 TO 5 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.
.MON 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

.TONIGHT...VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
.THU...SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
.THU NIGHT...SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
.FRI...SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
.FRI NIGHT...E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
.SAT...E WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. 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 4 TO 6 FT.
.SUN NIGHT...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.MON...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.MON NIGHT...E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.

OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W

.TONIGHT...E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.THU...E WINDS LESS THAN 10 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 4 TO 6 FT.
.FRI NIGHT...E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SAT...E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SAT NIGHT...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SUN...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SUN NIGHT...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.MON...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.MON NIGHT...NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.

SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS

.SYNOPSIS...STRONG SE WINDS ARE W OF 75W IN ADVANCE OF A BROAD
SURFACE LOW MOVING ACROSS FLORIDA TONIGHT. THE LOW WILL DRAG A
COLD FRONT ACROSS THE GREAT BAHAMA BANK TONIGHT AS A WARM FRONT
DEVELOPS E OF THE LOW. A LARGE AREA OF STRONG TO NEAR GALE FORCE
WINDS ARE EXPECTED E OF THE FRONTS ON THU WITH AN EMBEDDED BAND
OF GALE FORCE WINDS NE OF THE BAHAMAS THAT WILL PERSIST THROUGH
EARLY FRIDAY MORNING. THE LOW WILL REACH NEAR 29N75W ON FRI
MORNING WITH THE COLD FRONT EXTENDING SE TO THE WINDWARD
PASSAGE. GALE FORCE WINDS WILL CONTINUE OVER NE WATERS THROUGH
FRI NIGHT WHILE STRONG WINDS WILL SHIFT N OF THE AREA ON SAT AS
THE LOW RACES N TO MERGE WITH ANOTHER FRONTAL SYSTEM. THE NEW
COLD FRONT WILL MOVE INTO THE NW WATERS EARLY SUN MORNING
ACCOMPANIED BY STRONG POST FRONTAL FLOW.

ATLC WATERS FROM 27N TO 31N W OF 77W

.TONIGHT...SE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
.THU...E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
.THU NIGHT...NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
.FRI...NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
.FRI NIGHT...N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
.SAT...NW WINDS LESS THAN 10 KT...SHIFTING TO W IN THE
AFTERNOON. SEAS 6 TO 7 FT.
.SAT NIGHT...W WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.SUN...N WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.SUN NIGHT...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.MON...SE WINDS 15 TO 20 KT. SEAS 5 FT.
.MON NIGHT...S WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.

ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W

...GALE WARNING...

.TONIGHT...SE WINDS 15 TO 25 KT W OF 70W...AND E 10 TO 15 KT
ELSEWHERE. SEAS 7 TO 10 FT.
.THU...SE WINDS 25 TO 35 KT W OF 70W...AND SE 10 TO 20 KT
ELSEWHERE. SEAS 8 TO 13 FT W OF 70W...AND 7 TO 10 FT ELSEWHERE.
.THU NIGHT...E WINDS 30 TO 40 KT N OF 28N W OF 73W...SE WINDS 20
TO 30 KT ELSEWHERE. SEAS 10 TO 15 FT.
.FRI...SW WINDS 10 TO 15 KT W OF 70W...AND SE 20 TO 30 KT
ELSEWHERE. SEAS 8 TO 13 FT W OF 70W...AND 10 TO 15 FT
ELSEWHERE.
.FRI NIGHT...S WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
.SAT...SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
.SAT NIGHT...W WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SUN...NW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.SUN NIGHT...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.MON...E WINDS 15 KT. SEAS 5 TO 6 FT.
.MON NIGHT...SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.

BAHAMAS N OF 22N

.TONIGHT...S WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
.THU...SW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.THU NIGHT...SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.FRI...W WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.FRI NIGHT...W WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
.SAT...NW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.SAT NIGHT...N WINDS LESS THAN 10 KT IN THE EVENING...BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.SUN...VARIABLE WINDS LESS THAN 10 KT...BECOMING NE LESS THAN
10 KT IN THE AFTERNOON. SEAS 3 FT.
.SUN NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.MON...E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
.MON NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.

ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS

...GALE WARNING...

.TONIGHT...SE WINDS 15 TO 25 KT W OF 70W...AND E 10 TO 15 KT
ELSEWHERE. SEAS 6 TO 9 FT.
.THU...SE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
.THU NIGHT...S TO SE WINDS 25 TO 35 KT N OF 24N E OF 72W...SW
WINDS 15 TO 20 KT ELSEWHERE. SEAS 8 TO 11 FT.
.FRI...SW WINDS 10 TO 15 KT W OF 70W...AND S 15 TO 25 KT
ELSEWHERE. SEAS 8 TO 11 FT.
.FRI NIGHT...SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
.SAT...SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.SAT NIGHT...W WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
.SUN...N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.SUN NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
.MON...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
.MON NIGHT...E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.

ATLC WATERS S OF 22N W OF 65W

.TONIGHT...SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.THU...SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
.THU NIGHT...S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
.FRI...S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
.FRI NIGHT...S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
.SAT...S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
.SAT NIGHT...E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
.SUN...E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
.SUN NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
.MON...E WINDS 10 TO 20 KT. SEAS 4 TO 5 FT.
.MON NIGHT...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.

ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W

.TONIGHT...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
.THU...E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
.THU NIGHT...E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
.FRI...SE WINDS 10 TO 15 KT. SEAS 7 TO 9 FT.
.FRI NIGHT...SE WINDS 10 KT. SEAS 6 TO 7 FT.
.SAT...SE WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.
.SAT NIGHT...E WINDS 10 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 6 FT.
.MON...E WINDS 15 KT. SEAS 5 TO 6 FT.
.MON NIGHT...E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.



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