PLANNED OUTAGE NOTICE
This website needs to be taken down for a one hour outage on Monday, September 26, 2022 at 17:30 UTC (1:30 PM EDT). During that time, please visit one of the following sites for current marine weather information: National Hurricane CenterHonolulu Forecast OfficeNWS Marine Program.

Hurricane Warnings in Effect
Atlantic:  High Seas

North Atlantic High Seas Forecast

[Printable Version]   [Alt Link/Previous Versions]
FZNT01 KWBC 241612
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT SEP 24 2022

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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).

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 1200 UTC SEP 24. 
24 HOUR FORECAST VALID 1200 UTC SEP 25.
48 HOUR FORECAST VALID 1200 UTC SEP 26.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.POST-TROPICAL CYCLONE FIONA NEAR 47.9N 61.3W 940 MB AT 1500 UTC
SEP 24 MOVING N OR 355 DEG AT 22 KT. MAXIMUM SUSTAINED WINDS 70
KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 270 NM NE...350
NM SE...350 NM SW...AND 240 NM NW QUADRANTS. SEAS 12 FT OR
GREATER WITHIN 360 NM NE...960 NM SE...780 NM SW...AND 180 NM NW
QUADRANTS WITH SEAS TO 51 FT. ELSEWHERE FROM 35N TO 54N BETWEEN
47W AND 71W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.24 HOUR FORECAST POST-TROPICAL CYCLONE FIONA NEAR 54.1N
59.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM
FORCE WINDS WITHIN 180 NM NE QUADRANT...180 NM SE QUADRANT...100
NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER
WITHIN 180 NM N...660 NM E...1020 NM S...AND 300 NM W QUADRANTS
WITH SEAS TO 18 FT. ELSEWHERE FROM 40N TO 58N BETWEEN 37W AND 63W
WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.48 HOUR FORECAST POST-TROPICAL CYCLONE FIONA NEAR 61.0N
59.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM
FORCE WINDS WITHIN 100 NM NE...100 NM SE...AND 90 NM SW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 360 NM E AND NE AND 420
NM S QUADRANTS WITH SEAS TO 16 FT. ELSEWHERE N OF 52N AND W OF
44W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.72 HOUR FORECAST POST-TROPICAL CYCLONE FIONA NEAR 65.3N
56.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL CYCLONE FIONA DISSIPATED.

...STORM WARNING....
.N OF 58N W OF 43W SW WINDS 30 TO 45 KT. SEAS 12 TO 21 FT.
ELSEWHERE N OF A LINE FROM 53N35W TO 60N52W WINDS 20 TO 30 KT.
SEAS 8 TO 15 FT. 
.12 HOUR FORECAST NEW LOW E OF AREA NEAR 67N27W 967 MB. N OF 62N
AND E OF GREENLAND W TO NW WINDS 40 TO 55 KT. SEAS 14 TO 26 FT. 
.24 HOUR FORECAST LOW WELL E OF AREA. N OF A LINE FROM 62N35W TO
64N40W NW WINDS 25 TO 35 KT. SEAS 11 TO 21 FT. 
.48 HOUR FORECAST LOW AND CONDITIONS MOVED WELL E OF AREA.

...GALE WARNING...
.24 HOUR FORECAST POST-TROPICAL CYCLONE GASTON NEAR 38.4N 35.1W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM SW AND 100 NM NW QUADRANTS. SEAS 12 FT OR
GREATER WITHIN 270 NM W SEMICIRCLE WITH SEAS TO TO 22 FT.
ELSEWHERE FROM 37N TO 45N BETWEEN 35W AND 39W WINDS 20 TO 33 KT.
SEAS TO 12 FT.  
.48 HOUR FORECAST POST-TROPICAL CYCLONE GASTON NEAR 37.5N 39.0W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. FROM 36N TO 42N
BETWEEN 35W AND 42W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. 
.72 HOUR FORECAST POST-TROPICAL CYCLONE GASTON NEAR 35.6N 43.0W
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL CYCLONE GASTON NEAR 33.0N 48.0W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST POST-TROPICAL CYCLONE GASTON DISSIPATED.

...GALE WARNING...
.24 HOUR FORECAST FROM 34N TO 40N W OF 71W SW WINDS 20 TO 30 KT.
SEAS LESS THAN 8 FT. 
.36 HOUR FORECAST NW OF A LINE FROM 35N73W TO 37N70W SW WINDS 25
TO 35 KT. SEAS TO 11 FT. 
.48 HOUR FORECAST WITHIN 240 NM NW OF A LINE FROM 34N71W TO
39N59W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.

.SYNOPSIS AND FORECAST.

.12 HOUR FORECAST FROM 55N TO 59N W OF 47W E TO NE WINDS 25 TO 35
KT. SEAS TO 12 FT. 
.24 HOUR FORECAST FROM 57N TO 62N W OF 53W E TO NE WINDS 20 TO 30
KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST CONDITIONS ABSORBED BY POST-TROPICAL CYCLONE
FIONA. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM  WITHIN 90 NM E AND
SE OF THE GREENLAND COAST AND 180 NM NW OF A LINE FROM 43N48W TO
57N35W. 
.24 HOUR FORECAST DENSE FOG FROM 53N TO 59N BETWEEN 35W AND 62W
AND FROM 46N TO 53N BETWEEN 43W AND 49W.
.48 HOUR FORECAST DENSE FOG FROM 54N TO 63N BETWEEN 35W AND 42W
AND FROM 58N TO 66N W OF 56W.

.HIGH 34N43W 1022 MB MOVING W 05 KT.
.24 HOUR FORECAST HIGH 34N44W 1021 MB.
.48 HOUR FORECAST HIGH 33N48W 1023 MB.

.24 HOUR FORECAST HIGH 33N63W 1019 MB.
.48 HOUR FORECAST HIGH 44N47W 1026 MB.

.48 HOUR FORECAST NEW HIGH 38N52W 1021 MB.

.FORECASTER ACHORN. 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 1200 UTC SAT SEP 24.
24 HOUR FORECAST VALID 1200 UTC SUN SEP 25.
48 HOUR FORECAST VALID 1200 UTC MON SEP 26.

.WARNINGS.

...CARIBBEAN HURRICANE WARNING...
.TROPICAL STORM IAN NEAR 14.4N 75.2W 1003 MB AT 1500 UTC SEP 24 
MOVING W OR 260 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS
50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER EXCEPT 
50 NM NW QUADRANT. ELSEWHERE WITHIN 15N73W TO 17N73W TO 17N74W TO
15N76W TO 14N75W TO 13N74W TO 15N73W WINDS 20 TO 33 KT. SEAS 8 
TO 10 FT.
.24 HOUR FORECAST TROPICAL STORM IAN NEAR 15.5N 78.9W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM NE QUADRANT...40 NM SE QUADRANT...20 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90
NM NE QUADRANT WITH SEAS TO 16 FT. ELSEWHERE WITHIN 17N76W TO 
17N77W TO 17N80W TO 16N80W TO 14N80W TO 15N78W TO 17N76W WINDS 20
TO 33 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST HURRICANE IAN NEAR 17.0N 80.7W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.48 HOUR FORECAST HURRICANE IAN NEAR 18.8N 82.3W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NW AND SE QUADRANTS...100 NM NE QUADRANT AND 60 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM E SEMICIRCLE AND
30 NM W SEMICIRCLE WITH SEAS TO 23 FT. ELSEWHERE WITHIN 19N78W 
TO 21N81W TO 19N84W TO 17N83W TO 18N79W TO 19N78W WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST HURRICANE IAN NEAR 22.7N 84.1W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST HURRICANE IAN NEAR 26.0N 83.9W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. 
.120 HOUR FORECAST HURRICANE IAN NEAR 28.6N 82.9W. MAXIMUM 
SUSTAINED WINDS 95 KT GUSTS 115 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC POST-TROPICAL CYCLONE FIONA...WELL N OF THE AREA...NEAR 
47.9N 61.3W 945 MB AT 1500 UTC SEP 24 MOVING N OR 355 DEG AT 22 
KT. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. WITHIN 31N50W TO 
30N80W TO 28N75W TO 29N67W TO 28N62W TO 29N53W TO 31N50W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 54.1N 
59.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. WITHIN 31N52W 
TO 31N63W TO 29N60W TO 29N56W TO 31N52W WINDS 20 KT OR LESS. SEAS
8 TO 9 FT IN NW TO N SWELL.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 61.0N 
59.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. WITHIN 31N40W 
TO 31N52W TO 28N50W TO 28N49W TO 29N42W TO 31N40W WINDS 20 KT OR 
LESS. SEAS 8 FT IN NW TO N SWELL.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FIONA NEAR 65.3N 
56.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

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


.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.

$$