FZNT01 KWBC 182209
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 18.
24 HOUR FORECAST VALID 1800 UTC SEP 19.
48 HOUR FORECAST VALID 1800 UTC SEP 20.
.WARNINGS.
…STORM WARNING…
.LOW 49N37W 1000 MB MOVING NW 10 KT. FROM 40N TO 55N E OF 47W
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 55N40W 999 MB. WITHIN 240 NM N SEMICIRCLE
WINDS 30 TO 40 KT. SEAS 8 TO 14 FT. ESLEWHERE WITHIN 300 NM S
AND N SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.
.36 HOUR FORECAST LOW 55N44W 999 MB. FROM 58N TO 61N BETWEEN 41W
AND 47W WINDS 35 TO 50 KT. SEAS 12 TO 16 FT. ESLEWHERE FROM 50N
TO 64N E OF 52W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 54N45W 1003 MB. WITHIN 180 NM NW OF LINE
FROM 57N43W TO 61N39W WINDS 45 TO 55 KT. SEAS 14 TO 24 FT.
ELSEWHERE WITHIN 240 NM NW OF LINE FROM 55N45W TO 62N27W WINDS
35 TO 45 KT. SEAS 10 TO 20 FT. ALSO ELSEWHERE FROM 49N TO 64N E
OF 54W WINDS 25 TO 35 KT. SEAS TO 12 FT.
…GALE WARNING…
.LOW 37N75W 1011 MB MOVING NE 10 KT. WITHIN 240 NM NE QUADRANT
WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N70W 1005 MB.
WITHIN 240 NM NW SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 8 FT.
ALSO FROM 35N TO 40N BETWEEN 62W AND 67W WINDS 20 TO 30 KT. SEAS
TO 10 FT.
.48 HOUR FORECAST LOW 39N70W 1003 MB. FROM 37N TO 45N BETWEEN
59W AND 74W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.SYNOPSIS AND FORECAST.
.LOW 26N53W 1008 MB MOVING SW 05 KT. S OF 34N BETWEEN 35W AND
60W WINDS 20
