High Seas 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
805
FZNT01 KWBC 202248
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC TUE FEB 20 2018

CCODE/1:31:04:01:00/AOW/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

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.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

SYNOPSIS VALID 1800 UTC FEB 20
24 HOUR FORECAST VALID 1800 UTC FEB 21
48 HOUR FORECAST VALID 1800 UTC FEB 22

.WARNINGS.

...STORM WARNING...
.LOW 41N36W 996 MB MOVING SE 15 KT. FRONT EXTENDS FROM LOW TO
45N36W TO 47N35W. FROM 36N TO 45N BETWEEN 37W AND 42W WINDS 40
TO 55 KT. SEAS 24 TO 46 FT...HIGHEST NEAR 39N39W. ALSO OVER
FORECAST WATERS WITHIN 420 NM SE SEMICIRCLE...540 NM SW AND 420
NM NW QUADRANT AND BETWEEN THE FRONT AND A LINE FROM 53N35W TO
45N44W WINDS 25 TO 40 KT. SEAS 12 TO 31 FT...HIGHEST SW OF LOW.
ELSEWHERE E OF A LINE FROM 54N35W TO 50N41W TO 31N53W WINDS 20
TO 30 KT. SEAS 10 TO 24 FT.
.24 HOUR FORECAST LOW E OF AREA 39N30W 999 MB. FROM 34N TO 43N E
OF 37W WINDS 25 TO 40 KT. SEAS 14 TO 25 FT. ELSEWHERE E OF A
LINE FROM 49N39W TO 31N45W WINDS 20 TO 30 KT. SEAS 10 TO 21 FT.
.48 HOUR FORECAST LOW E OF AREA 33N28W 995 MB. E OF A LINE FROM
36N35W TO 31N38W AREA OF N WINDS TO 25 KT. SEAS 10 TO 18 FT.

...STORM WARNING...
.LOW 65N39W 984 MB MOVING N 10 KT. OVER FORECAST WATERS FROM 63N
TO 65N E OF GREENLAND WINDS 35 TO 50 KT. SEAS IN ICE FREE WATERS
15 TO 33 FT. ELSEWHERE N OF 62N E OF 40W WINDS 25 TO 35 KT. SEAS
11 TO 24 FT.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS AS
DESCRIBED WITH LOW 62N42W BELOW.

...STORM WARNING...
.LOW 59N43W 993 MB MOVING NE 15 KT NEXT 12 HOURS THEN SLOWING
AND TURNING MORE NW. WITHIN 480 NM SW AND 180 NM SE AND E
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT...HIGHEST SW
QUADRANT.
.24 HOUR FORECAST LOW 62N42W 972 MB. FROM 55N TO 61N BETWEEN 40W
AND 49W WINDS 40 TO 50 KT. SEAS 14 TO 27 FT...HIGHEST NEAR
57N45W. ELSEWHERE OVER FORECAST WATERS WITHIN 360 NM W...240 NM
E AND 540 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 22 FT.
.48 HOUR FORECAST LOW E OF AREA 65N32W 972 MB. WITHIN 420 NM S
QUADRANT WINDS 20 TO 30 KT. SEAS 10 TO 25 FT.

...STORM WARNING...
.LOW JUST E OF AREA 52N33W 996 MB MOVING NE 45 KT NEXT 12 HOURS
THEN TURNING MORE N WHILE RAPIDLY INTENSIFYING. ASSOCIATED
CONDITIONS INCLUDED WITH LOW 41N36W AND FRONT DESCRIBED ABOVE.
.12 HOUR FORECAST LOW E OF AREA 61N29W 975 MB. OVER FORECAST
WATERS FROM 63N TO 66N E OF GREENLAND AREA OF E TO NE WINDS 30
TO 40 KT. SEAS IN ICE FREE WATERS 9 TO 15 FT.
.24 HOUR FORECAST LOW 66N35W 961 MB. N OF A LINE FROM 64N35W TO
65N39W WINDS 40 TO 55 KT. SEAS 15 TO 25 FT. ELSEWHERE N OF A
LINE FROM 63N35W TO 65N40W WINDS 25 TO 40 KT. SEAS 12 TO 22 FT.
.36 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS
DIMINISHED.

...STORM WARNING...
.24 HOUR FORECAST LOW INLAND NEAR 53N68W 1001 MB. W OF A LINE
FROM 50N56W TO 37N55W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.36 HOUR FORECAST LOW 52N50W 990 MB. W OF A LINE FROM 51N42W TO
45N50W WINDS 25 TO 40 KT. SEAS IN ICE FREE WATERS 8 TO 17
FT...HIGHEST E OF 50W.
.48 HOUR FORECAST LOW 51N40W 968 MB. FROM 45N TO 52N E OF 47W
OVER FORECAST WATERS WINDS 40 TO 55 KT. SEAS 18 TO 27 FT.

...GALE WARNING...
.LOW 65N60W 1000 MB MOVING SE 10 KT. OVER FORECAST WATERS
BETWEEN 120 NM AND 360 NM S QUADRANT WINDS 25 TO 40 KT. SEAS IN
ICE FREE WATERS 8 TO 14 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
62N42W ABOVE.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
W OF A LINE FROM 65N35W TO 55N48W TO 49N53W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 65N37W TO 58N37W TO 49N50W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N AND NW OF A
LINE FROM 60N40W TO 55N55W.

.SYNOPSIS AND FORECAST.

.FROM 39N TO 43N W OF 57W AREA OF SW WINDS TO 25 KT. SEAS TO 9
FT.
.24 HOUR FORECAST CONDITIONS AS DESCRIBED WITH LOW 53N78W ABOVE.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM W OF A LINE FROM
45N54W TO 37N73W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST DENSE FOG FROM 36N TO 40N W OF 72W.

.HIGH 36N58W 1039 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 33N62W 1036 MB.
.48 HOUR FORECAST HIGH 32N68W 1034 MB.

.24 HOUR FORECAST HIGH 48N49W 1026 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.FORECASTER BANCROFT. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1800 UTC TUE FEB 20.
24 HOUR FORECAST VALID 1800 UTC WED FEB 21.
48 HOUR FORECAST VALID 1800 UTC THU FEB 22.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 13N BETWEEN 73W AND 76W NE TO E WINDS 25 TO 30 KT.
SEAS 10 TO 14 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 68W AND 82W
NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 13 FT. N OF 12N BETWEEN 64W
AND 68W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT. REMAINDER CARIBBEAN
S OF 15N BETWEEN 74W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT. N OF 18.5N E OF 78W...INCLUDING WINDWARD PASSAGE...NE WINDS
20 TO 25 KT. SEAS TO 9 FT.
.06 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 77W NE TO E
WINDS 30 TO 35 KT. SEAS 10 TO 15 FT. ELSEWHERE FROM 10N TO 18N
BETWEEN 68W AND 82W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
N OF 12N E OF 68W...INCLUDING THE ATLC PASSAGES...NE TO E WINDS
20 TO 25 KT. SEAS 8 TO 10 FT. REMAINDER OF AREA S OF 17N BETWEEN
76W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E
SWELL. N OF 19N E OF 80W...INCLUDING WINDWARD PASSAGE...NE TO E
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 77W NE TO E
WINDS 30 TO 35 KT. SEAS 11 TO 15 FT. ELSEWHERE FROM 10N TO 18N
BETWEEN 70W AND 83W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
N OF 14N E OF 70W...INCLUDING THE ATLC PASSAGES...NE TO E WINDS
20 TO 25 KT. SEAS 8 TO 10 FT. REMAINDER WATERS S OF 14N E OF 83W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. N OF 18N
E OF 80W...INCLUDING WINDWARD PASSAGE...NE WINDS 20 TO 25 KT.
SEAS TO 10 FT.
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE WINDS
25 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 18N BETWEEN
70W AND 81W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. N OF 14N
E OF 70W...INCLUDING THE ATLC PASSAGES...NE TO E WINDS 20 TO 25
KT. SEAS 8 TO 10 FT. N OF 18.5N E OF 77W...INCLUDING WINDWARD
PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS TO 9 FT. REMAINDER
WATERS WATERS S OF 15N E OF 83W WINDS 20 KT OR LESS. SEAS 8 TO
10 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC WEAKENING COLD FRONT FROM 28N35W TO 24N44W TO 21N60W. N OF
FRONT E OF 60W N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 21 FT IN N
SWELL...HIGHEST NE PART. ATLC WATERS FROM 15N TO 21N BETWEEN 60W
AND 75W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. S OF 13N
WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL.
.24 HOUR FORECAST COLD FRONT DISSIPATED. N OF 28N E OF 40W N
WINDS 20 TO 25 KT. SEAS 19 TO 21 FT IN N SWELL. ATLC WATERS FROM
15N TO 25N BETWEEN 55W AND 75W AND FROM 20N TO 25N BETWEEN 40W
AND 55W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 16 FT. ELSEWHERE
ATLC WATERS OUTSIDE BAHAMAS S OF LINE 31N35W TO 31N68W TO 27N77W
WINDS 20 KT OR LESS. SEAS 8 TO 18 FT IN MIXED NE AND NW SWELL...
HIGHEST NE.
.48 HOUR FORECAST ATLC WATERS FROM 14N TO 22N BETWEEN 50W AND
77W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 15 FT IN N TO NE SWELL.
ELSEWHERE ATLC WATERS OUTSIDE BAHAMAS S OF LINE 31N35W TO 31N55W
TO 28N77W...WINDS 20 KT OR LESS. SEAS 8 TO 15 FT IN MIXED N AND
NE SWELL...HIGHEST NEAR 20N37W.

.GULF OF MEXICO FROM 23N TO 25N E OF 83W...INCLUDING STRAITS OF
FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 23N TO 25N E OF 83W...INCLUDING STRAITS
OF FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 23N
TO 27N BETWEEN 91W AND 96W SE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 23N TO 25N E OF 83W...INCLUDING STRAITS
OF FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.

.06 HOUR FORECAST CARIBBEAN S OF 19N W OF 85W...INCLUDING GULF
OF HONDURAS...E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST S OF 17N W OF 86W...INCLUDING GULF OF
HONDURAS...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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