FZNT01 KWBC 171020
HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC TUE MAR 17 2026
CCODE/2:31:04:01:00/AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).
FROM APRIL 1 TO OCTOBER 15, DUE TO CLIMATOLOGY, OF THE NORTH
ATLANTIC, HIGH SEAS FORECASTS WILL ONCE AGAIN INCLUDE ALL
FORECASTS OF WINDS 20 TO 30 KNOTS AND SEAS 2.5 METERS OR
GREATER.
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0600 UTC MAR 17.
24 HOUR FORECAST VALID 0600 UTC MAR 18.
48 HOUR FORECAST VALID 0600 UTC MAR 19.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.LOW 49N73W 978 MB MOVING NE 30 KT AND RAPIDLY INTENSIFYING.
WITHIN 300 NM E OF A LINE FROM 31N77W TO 44N73W WINDS 35 TO 45
KT. SEAS 3 TO 6 M. ELSEWHERE W OF A LINE FROM 53N51W TO 40N53W TO
31N65W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.18 HOUR FORECAST LOW 58N66W 951 MB. WITHIN 420 NM NE...AND 600
NM E QUADRANTS WINDS 40 TO 50 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 60N63W 948 MB. WITHIN 150 NM S OF A LINE
FROM 64N53W TO 60N44W WINDS 55 TO 65 KT. SEAS 5 TO 7 M. ALSO
WITHIN 300 NM E SEMICIRCLE...AND 600 NM E QUADRANT WINDS 40 TO 55
KT. SEAS 3 TO 6 M. ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE
FROM 31N74W TO 67N58W TO 62N35W TO 40N35W TO 31N61W TO 31N74W
WINDS 25 TO 40 KT. SEAS 2.5 TO 6 M...HIGHEST NEAR 40N60W.
.48 HOUR FORECAST LOW WELL N OF AREA. N OF 58N E OF 45W WINDS 35
TO 45 KT. SEAS 4 TO 6.5 M. ELSEWHERE N OF 49N E OF 62W WINDS 25
TO 35 KT. SEAS 3 TO 6.5 M.
...STORM WARNING...
.LOW WELL E OF AREA. WITHIN 300 NM S OF A LINE FROM 61N50W TO
58N35W WINDS 40 TO 50 KT. SEAS 5 TO 8 M. ELSEWHERE E OF A LINE
FROM 31N47W TO 50N47W TO 61N52W TO 65N40W WINDS 25 TO 40 KT. SEAS
3 TO 7 M...HIGHEST NEAR 50N35W.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW E OF AREA NEAR 40N15W 994 MB. S OF 40N
E OF 40W WINDS 20 TO 30 KT. SEAS 3 TO 5 M.
.48 HOUR FORECAST LOW 36N23W 988 MB. S OF 43N E OF 43W WINDS 25
TO 35 KT. SEAS 2.5 TO 4.5 M.
...HEAVY FREEZING SPRAY...
.MODERATE TO HEAVY FREEZING SPRAY N 63N W OF GREENLAND. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 53N63W TO
47N48W TO 64N35W.
.24 HOUR FORECAST. MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF
GREENLAND. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N43W TO 61N60W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 55N W OF
55W...AND WITHIN THE GULF OF SAINT LAWRENCE. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY N OF A LINE FROM 41N70W TO 47N53W TO
60N45W.
.SYNOPSIS AND FORECAST.
.48 HOUR FORECAST WITHIN 240 NM EITHER SIDE OF A LINE FROM 31N68W
TO 43N49W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM W OF A LINE FROM
40N67W TO 51N49W TO 58N59W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 57N BETWEEN 57W AND
42W...AND N OF 60N W OF 50W.
.48 HOUR FORECAST DENSE FOG N OF 60N W OF GREENLAND.
.FORECASTER BYRD. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0600 UTC TUE MAR 17.
24 HOUR FORECAST VALID 0600 UTC WED MAR 18.
48 HOUR FORECAST VALID 0600 UTC THU MAR 19.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 19N55W TO 24N47W TO 25N58W TO 21N63W TO 14N60W TO
10N50W TO 19N55W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M IN
NE TO E SWELL. ELSEWHERE WITHIN 21N47W TO 30N35W TO 29N71W TO
18N63W TO 09N61W TO 08N41W TO 21N47W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 31N35W TO 31N70W TO 06N54W TO 11N38W TO
19N47W TO 21N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5
M IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 31N35W TO 31N40W TO 28N37W TO 27N35W TO
31N35W N WINDS 20 TO 30 KT. SEAS 5.0 TO 6.5 M IN N SWELL.
ELSEWHERE WITHIN 27N35W TO 31N55W TO 14N61W TO 07N41W TO 15N44W
TO 17N35W TO 27N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NE
SWELL.
.ATLC COLD FRONT FROM 31N75W TO 26N80W. WITHIN 31N68W TO 31N81W
TO 29N80W TO 30N76W TO 28N73W TO 31N68W SW WINDS 20 TO 30 KT.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N70W TO 22N79W.
CONDITIONS MERGED WITH AREA TO THE SOUTH.
.ATLC COLD FRONT FROM 30N34W TO 28N50W. WITHIN 31N35W TO 31N43W
TO 29N48W TO 29N45W TO 30N36W TO 31N35W NE WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M IN NW TO N SWELL. ELSEWHERE WITHIN 31N43W TO
31N56W TO 29N52W TO 29N49W TO 29N48W TO 31N43W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST COLD FRONT DISSIPATED. CONDITIONS MERGED WITH
AREA TO THE SOUTH.
.ATLC 36 HOUR FORECAST SURFACE TROUGH FROM 31N68W TO 26N76W.
WITHIN 27N71W TO 31N66W TO 31N73W TO 28N77W TO 26N77W TO 21N68W
TO 27N71W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E TO SE
SWELL.
.48 HOUR FORECAST SURFACE TROUGH STATIONARY. WITHIN 29N71W TO
31N65W TO 30N69W TO 31N72W TO 27N77W TO 25N75W TO 29N71W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN E TO SE SWELL.
.CARIBBEAN WITHIN 18N64W TO 17N77W TO 11N76W TO 12N62W TO
18N64W...INCLUDING MONA AND ATLANTIC PASSAGES...AND GULF OF
VENEZUELA...E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST WITHIN 13N72W TO 12N74W TO 13N76W TO 11N76W TO
12N74W TO 11N71W TO 13N72W...INCLUDING GULF OF VENEZUELA...E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. ELSEWHERE WITHIN 15N66W
TO 18N76W TO 13N79W TO 11N76W TO 13N72W TO 12N65W TO 15N66W...
INCLUDING MONA PASSAGE...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M
IN E SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC 18 HOUR FORECAST WITHIN 25N80W TO 25N79W TO 26N80W TO
25N81W TO 24N82W TO 23N82W TO 25N80W...INCLUDING STRAITS OF
FLORIDA...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WITHIN 26N79W TO 26N78W TO 27N80W TO 25N80W TO
24N82W TO 24N80W TO 26N79W NE WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.GULF OF AMERICA COLD FRONT FROM 25N80W TO 18N91W. WITHIN 28N83W
TO 29N84W TO 25N90W TO 24N95W TO 20N96W TO 19N91W TO 28N83W...
INCLUDING WATERS OFF VERACRUZ AND BAY OF CAMPECHE...N TO NE
WINDS 25 TO 30 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE WITHIN 27N84W TO
28N91W TO 26N97W TO 20N97W TO 25N91W TO 24N87W TO
27N84W N WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M IN NW TO N SWELL.
.24 HOUR FORECAST COLD FRONT SE OF AREA. WITHIN 23N81W TO 24N87W
TO 21N94W TO 19N96W TO 18N94W TO 20N86W TO 23N81W...INCLUDING
STRAITS OF FLORIDA...YUCATAN CHANNEL AND WATERS OFF VERACRUZ...
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.39 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER CHAN. NATIONAL HURRICANE CENTER.
$$
