North Atlantic High Seas Forecast

Hurricane Warnings in Effect
North Atlantic High Seas Forecast

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FZNT01 KWBC 310940
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT JUL 31 2021

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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).

METAREA IV BULLETIN WILL ONLY BE BROADCAST FROM THE INMARSAT 
AOE SATELLITE. PLEASE ENSURE YOUR RECEIVER IS POINTED 
CORRECTLY. 

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH 
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP 
(ALL LOWERCASE).

SECURITE

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0600 UTC JUL 31. 
24 HOUR FORECAST VALID 0600 UTC AUG 01.
48 HOUR FORECAST VALID 0600 UTC AUG 02.

.WARNINGS.

...GALE WARNING... 
.LOW 60N40W 1012 MB MOVING NE 10 KT. WITHIN 360 NM W
AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. 
ELSEWHERE WITHIN 120 NM N AND NE...AND 420 NM W AND
NW QUADRANTS WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW DISSIPATED E OF AREA WITH
CONDITIONS DESCRIBED WITH LOW 57N54W BELOW.

...GALE WARNING... 
.LOW 49N60W 994 MB MOVING NE 25 KT. FROM 36N TO 51N
BETWEEN 49W AND 61W WINDS 25 TO 35 KT. SEAS TO 12 FT.
ELSEWHERE FROM 32N TO 54N BETWEEN 48W AND 71W
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 57N54W 987 MB. WITHIN 420 NM
NE...600 NM E AND SE...AND 300 NM S QUADRANTS WINDS
30 TO 45 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN 540 NM
NE...1200 NM S AND SE...420 NM SW...AND 240 NM NE 
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. 
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 
60N53W 988 MB. WITHIN 120 NM NE...AND 360 NM E AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 15 FT. 
ELSEWHERE FROM 47N TO 67N BETWEEN 40W AND 64W
WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.24 HOUR FORECAST INLAND LOW 33N80W 1011 MB WITH A
FRONT TO EXTEND FROM LOW CENTER TO 36N67W. N OF
31N...WITHIN 180 NM S OF FRONT WINDS TO 25 KT. SEAS
TO 8 FT.
.48 HOUR FORECAST LOW 39N71W 1007 MB. N OF 31N...
WITHIN 360 NM SE...AND 540 NM SW QUADRANTS WINDS
25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE FROM 31N TO
40N W OF 58W WINDS TO 25 KT. SEAS TO 9 FT.

.SYNOPSIS AND FORECAST.

.LOW 58N59W 1000 MB DRIFTING NW. EXCEPT WHERE 
NOTED ABOVE IN FIRST GALE WARNING WITH LOW 
60N40W...BETWEEN 60 NM AND 240 NM NE...AND
BETWEEN 120 NM AND 360 NM NW QUADRANTS
WINDS 20 TO 30 KT. SEAS  TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS
DESCRIBED WITH LOW 57N54W IN WARNINGS SECTION
ABOVE.

.LOW 46N37W 1020 MB MOVING NE 25 KT. WITHIN 180 NM
SE...AND 480 NM W AND SW QUADRANTS WINDS TO 25 KT.
SEAS TO 9 FT. 
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA. 

.48 HOUR FORECAST FRONT TO EXTEND FROM 40N50W
TO 48N35W. WITHIN 180 NM S OF FRONT SW WINDS TO
25 KT. SEAS TO 9 FT. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM
FROM 44N TO 50N BETWEEN 50W AND 57W. 
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM E
AND N OF A LINE FROM 48N44W TO 55N44W TO 56N54W.
.48 HOUR FORECAST CONDITIONS IMPROVED. 

.HIGH 49N37W 1023 MB MOVING NE 20 KT. 
.24 HOUR FORECAST HIGH E OF AREA. 

.48 HOUR FORECAST HIGH 37N37W 1032 MB.

.FORECASTER MILLS. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 0600 UTC SAT JUL 31.
24 HOUR FORECAST VALID 0600 UTC SUN AUG  1.
48 HOUR FORECAST VALID 0600 UTC MON AUG  2.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC 18 HOUR FORECAST WITHIN 20N71W TO 20N73W TO 20.5N73W TO
20.5N72W TO 20.5N71W TO 20N71W...INCLUDING THE WINDWARD
PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.
.42 HOUR FORECAST WITHIN 20N71W TO 20N73W TO 20.5N73W TO 
20.5N72W TO 20.5N71W TO 20N71W...INCLUDING THE WINDWARD 
PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.ATLC 48 HOUR FORECAST WITHIN 23N35W TO 24N36W TO 25N36W TO
27N36W TO 28N35W TO 23N35W WINDS 20 KT OR LESS. SEAS 8 FT IN NE
TO E SWELL.

.CARIBBEAN WITHIN 12N70W TO 10N71W TO 11N76W TO 14N78W TO 17N76W
TO 12N70W E WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST WITHIN 11N70W TO 11N81W TO 14N79W TO 16N75W TO
15N71W TO 11N70W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 10N71W TO 13N79W TO 17N78W TO 17N74W TO
14N70W TO 10N71W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

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


.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.

$$