METAREA 4 bulletinset


HIGH SEAS FORECAST
FZNT01 KWBC 181534

HSFAT1

HIGH SEAS FORECAST FOR METAREA IV

NWS OCEAN PREDICTION CENTER WASHINGTON DC

1630 UTC SAT JUL 18 2026

CCODE/1:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE

THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

SECURITE

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC JUL 18.

24 HOUR FORECAST VALID 1200 UTC JUL 19.

48 HOUR FORECAST VALID 1200 UTC JUL 20.

.WARNINGS.

...GALE WARNING...

.LOW 59N59W 996 MB MOVING NW 10 KT. FROM 58N TO 64N BETWEEN W

GREENLAND COAST AND 57W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.

ELSEWHERE WITHIN 300 NM EITHER SIDE OF A LINE FROM 52N35W TO

67N64W WINDS TO 25 KT. SEAS TO 3 M.

.24 HOUR FORECAST LOW 63N62W 1002 MB. BETWEEN 240 NM AND 840 NM E

AND SE QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.

.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

...GALE WARNING...

.12 HOUR FORECAST LOW INLAND 47N72W 996 MB. WITHIN 420 NM SE

QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M.

.24 HOUR FORECAST LOW INLAND 48N66W 988 MB. A FRONT TO EXTEND

FROM LOW CENTER TO 48N63W TO 43N65W TO 36N74W. WITHIN 240 NM E

AND SE OF THE FRONT WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M...HIGHEST

NEAR 38N69W. ELSEWHERE WITHIN 360 NM E AND SE OF THE FRONT WINDS

TO 25 KT. SEAS TO 3 M.

.48 HOUR FORECAST LOW INLAND 52N60W 988 MB. BETWEEN 180 NM AND

480 NM NE AND E QUADRANTS...AND WITHIN THE GULF OF SAINT LAWRENCE

WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 44N TO 59N

BETWEEN 42W AND 66W...AND WITHIN 300 NM SE OF A FRONT FROM 56N50W

TO 41N55W TO 36N70W WINDS TO 25 KT. SEAS TO 3 M.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 43N E OF

47W...AND N OF 50N W OF 47W.

.24 HOUR FORECAST DENSE FOG N OF 47N E OF 40W...N OF A LINE FROM

56N40W TO 60N64W...AND FROM 39N TO 52N BETWEEN 56W AND 70W.

.48 HOUR FORECAST DENSE FOG FROM 50N TO 60N E OF 37W...N OF 61N W

OF GREENLAND...AND WITHIN 360 NM EITHER SIDE OF A LINE FROM

43N45W TO 60N63W.

.FORECASTER ANDERSON. 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 1200 UTC SAT JUL 18.

24 HOUR FORECAST VALID 1200 UTC SUN JUL 19.

48 HOUR FORECAST VALID 1200 UTC MON JUL 20.

.WARNINGS.

...CARIBBEAN GALE WARNING...

.CARIBBEAN WITHIN 13N75W TO 13N76W TO 13N78W TO 11N79W TO 10N77W

TO 11N75W TO 13N75W NE TO E WINDS 25 TO 30 KT. SEAS 3.5 TO 4.5

M. ELSEWHERE...WITHIN 16N71W TO 17N77W TO 15N81W TO 11N83W TO

10N77W TO 13N70W TO 16N71W...INCLUDING WITHIN 60 NM OF COAST OF

NICARAGUA...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

.12 HOUR FORECAST WITHIN 12N74W TO 12N75W TO 11N76W TO 11N75W TO

11N74W TO 12N74W NE TO E WINDS 25 TO 35 KT. SEAS 3.5 TO 4.5 M.

ELSEWHERE...WITHIN 16N71W TO 17N76W TO 15N81W TO 11N82W TO 10N77W

TO 13N69W TO 16N71W...INCLUDING THE GULF OF VENEZUELA...NE TO E

WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

.24 HOUR FORECAST WITHIN 12N75W TO 12N76W TO 13N77W TO 12N78W TO

11N78W TO 11N75W TO 12N75W NE TO E WINDS 25 TO 30 KT. SEAS 3.5

TO 4.5 M. ELSEWHERE...WITHIN 17N72W TO 16N78W TO 11N83W TO 10N80W

TO 12N73W TO 13N69W TO 17N72W NE TO E WINDS 20 TO 25 KT. SEAS

2.5 TO 3.5 M.

.48 HOUR FORECAST WITHIN 13N71W TO 15N75W TO 15N80W TO 11N83W TO

10N79W TO 10N77W TO 13N71W NE TO E WINDS 20 TO 25 KT. SEAS 2.5

TO 3.5 M.

.SYNOPSIS AND FORECAST.

.ATLC AND CARIBBEAN WITHIN 14N55W TO 15N59W TO 15N60W TO 13N62W

TO 10N60W TO 11N55W TO 14N55W...INCLUDING IN ATLANTIC EXPOSURES

AND PASSAGES AND ATLANTIC EXPOSURES...NE TO E WINDS 20 TO 25 KT.

SEAS 2.5 TO 3.0 M.

.24 HOUR FORECAST WITHIN 14N59W TO 14N60W TO 13N59W TO 12N58W TO

14N59W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS.

SEAS 2.5 TO 3.0 M IN E SWELL.

.33 HOUR FORECAST CONDITIONS IMPROVE.

.ATLC AND CARIBBEAN 06 HOUR FORECAST WITHIN 21N71W TO 21N72W TO

21N74W TO 20N74W TO 20N71W TO 20N71W E WINDS 20 TO 25 KT. SEAS

LESS THAN 2.5 M.

.24 HOUR FORECAST CONDITIONS IMPROVE.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.

$$