FZNT01 KWBC 232220
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON SEP 23 2024
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
[email protected](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).
THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP
FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
ATLANTIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 12 FEET OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH,
AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER
CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO
PRESERVE CONTINUITY WHERE APPROPRIATE.
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1800 UTC SEP 23.
24 HOUR FORECAST VALID 1800 UTC SEP 24.
48 HOUR FORECAST VALID 1800 UTC SEP 25.
.WARNINGS.
…GALE WARNING…
.LOW 36N66W 1004 MB MOVING SE 10 KT. WITHIN 90 NM NW OF LINE
FROM 36N68W TO 39N64W WINDS 25 TO 35 KT. SEAS 12 TO 16 FT.
ELSEWHERE WIHTIN 560 NM NW OF LINE FROM 31N68W TO 38N59W WINDS
TO 25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW MERGED WITH LOW AT 59N57W. CONDITIONS
DESCRIBED IN GALE WARNING BELOW.
…GALE WARNING…
.NEW LOW 39N57W 1004 MB NEARLY STATIONARY. WIHTIN 90 NM N OF
LINE FROM 40N62W TO 40N59W WINDS 25 TO 40 KT. SEAS 12 TO 15 FT.
ELSEWHERE WITHIN 420 NM N OF LINE FROM 38N59W TO 39N42W WINDS TO
25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 39N59W 1003 MB. WITHIN 180 NM NW OF LINE
FROM 38N60W TO 40N53W WINDS 35 TO 45 KT. SEAS 10 TO 20 FT.
ELSEWHERE WITHIN 480 NM NW OF LINE FROM 31N67W TO 39N48W WINDS
25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 37N57W 999 MB. WITHIN 90 NM NW OF LINE
FROM 38N59W TO 40N50W WINDS 30 TO 40 KT. SEAS 12 TO 22 FT. FROM
32N TO 45N BETWEEN 43W AND 73W WINDS 20 TO 30 KT. SEAS 8 TO 16
FT.
…GALE WARNING…
.LOW 50N34W 991 MB DRIFTING SW 05 KT. WITHIN 90 NM W SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 12 TO 15 FT. ELSEWHERE FROM 43N TO 53N E
OF 60W WINDS TO 25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 51N37W 995 MB. WITHIN 360 NM W SEMICIRCLE
WINDS 30 TO 40 KT. SEAS 12 TO 20 FT. ELSEWHERE FROM 42N TO 58N E
OF 51W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW WELL E OF AREA. FROM 39N TO 53N E OF 53W
WINDS LESS THAN 25 KT. SEAS TO 12 FT.
.SYNOPSIS AND FORECAST.
.LOW 32N56W 1006 MB MOVING NE 20 KT. S OF 35N BETWEEN 51W AND
56W WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 38N50W 1008 MB. WITHIN 180 NM OF CENTER
WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW MERGED WITH LOW AT 37N57W.
.LOW 35N44W 1014 MB MOVING NE 35 KT. S OF 39N E OF 42W WINDS TO
25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW WELL E OF AREA. FR
