FZNT01 KWBC 230408
HSFAT1 0430
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 23.
24 HOUR FORECAST VALID 0000 UTC SEP 24.
48 HOUR FORECAST VALID 0000 UTC SEP 25.
.WARNINGS.
…GALE WARNING…
.LOW 53N45W 1000 MB MOVING S 05 KT. WITHIN 420 NM SW QUADRANT AND
480 NM NW SEMICIRCLE WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW 51N45W 1003 MB. FROM 47N TO 56N BETWEEN 40W
AND 56W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS ABSORBED AND
DESCRIBED BELOW WITH LOW 50N35W.
…GALE WARNING…
.LOW 46N39W 1001 MB MOVING NE 20 KT. E OF A LINE FROM 39N46W TO
50N39W WINDS 25 TO 40 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW E OF AREA 53N34W 988 MB. FROM 46N TO 59N
BETWEEN 35W AND 40W WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 50N35W 995 MB. WITHIN 420 NM W SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 9 TO 18 FT. ELSEWHERE FROM 42N TO 58N
BETWEEN 35W AND 48W WINDS TO 25 KT. SEAS 8 TO 13 FT IN MIXED
SWELL.
…GALE WARNING…
.LOW 38N66W 1003 MB MOVING S 05 KT. WITHIN 360 NM NW SEMICIRCLE
AND FROM 39N TO 44N BETWEEN 54W AND 70W WINDS 25 TO 40 KT. SEAS 9
TO 18 FT.
.24 HOUR FORECAST LOW 35N66W 1006 MB. WITHIN 300 NM W QUADRANT
AND FROM 38N TO 43N BETWEEN 61W AND 70W WINDS 25 TO 35 KT. SEAS 8
TO 14 FT.
.48 HOUR FORECAST LOW 33N63W 1009 MB. ASSOCIATED CONDITIONS
DIMINISHED.
…GALE WARNING…
.24 HOUR FORECAST NEW LOW 39N58W 1002 MB. WITHIN 90 NM S
SEMICIRCLE AND FROM 39N TO 43N BETWEEN 48W AND 61W WINDS 25 TO 40
KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 38N58W 1000 MB. WITHIN 180 NM W AND 240 NM
N QUADRANTS WINDS 35 TO 45 KT. SEAS 11 TO 22 FT. ELSEWHERE FROM
36N TO 44N
BETWEEN 46W AND 63W WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. OTHERWISE
FROM 34N TO 43N BETWEEN
