FZNT01 KWBC 192205
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU SEP 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19.
24 HOUR FORECAST VALID 1800 UTC SEP 20.
48 HOUR FORECAST VALID 1800 UTC SEP 21.
.WARNINGS.
…STORM WARNING…
.LOW 55N42W 99 MB NEARLY STATIONARY. WITHIN 300 NM N SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. ELSEWHERE WITHIN 360 NM S
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.
.18 HOUR FORECAST LOW 55N42W 1001 MB. WITHIN 180 NM NW OF LINE
FROM 57N42W TO 61N39W WINDS 45 TO 55 KT. SEAS 12 TO 18 FT.
.24 HOUR FORECAST LOW 55N43W 1002 MB. WITHIN 120 NM NW OF LINE
FROM 57N44W TO 60N40W WINDS 50 TO 60 KT. SEAS 15 TO 25 FT.
ELSEWHERE WITHIN 180 NM NW OF LINE FROM 55N46W TO 62N37W WINDS
35 TO 50 KT. SEAS 12 TO 22 FT. ALSO ELSEWHERE WITHIN 420 NM NW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 12 TO 22 FT. AND FROM 62N TO
65N E OF 41W WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 54N40W 996 MB, WITHIN 120NM NW OF LINE
FROM 57N44W TO 60N41W WINDS 40 TO 55 KT. SEAS 16 TO 26 FT.
ELSEWHERE WITHIN 240 NM NW OF LINE FROM 54N46W TO 63N35W WINDS
30 TO 40 KT. SEAS 10 TO 20 FT. ALSO ELSEWHERE FROM 45N TO 64N E
OF 59W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
…GALE WARNING…
.LOW 40N70W 1004 MB MOVING SE 05 KT. WITHIN 180 NM NW SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 8 FT. AND FROM 35N TO 40N BETWEEN 61W
AND 66W WINDS 20 TO 30 KT. SEAS TO 9 FT.
.06 HOUR FORECAST LOW 40N69W 1004 MB. WITHIN 120 NM NW QUADRANT
WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 39N68W 1002 MB. WITHIN 180 NM NW
SEMICIRCLE WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM
41N TO 45N BETWEEN 61W AND 71W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 39N68W 1003 MB. FROM 35N TO 44N BETWEEN
57W AND 72W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
…GALE WARNING.
