FZNT01 KWBC 210335
HSFAT1 0430
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 21.
24 HOUR FORECAST VALID 0000 UTC SEP 22.
48 HOUR FORECAST VALID 0000 UTC SEP 23.
.WARNINGS.
…STORM WARNING…
.LOW 51N45W 1003 MB MOVING SE 15 KT. WITHIN 180 NM NW OF A LINE
FROM 56N43W TO 61N38W WINDS 45 TO 60 KT. SEAS 16 TO 24 FT.
ELSEWHERE WITHIN AN AREA BOUNDED BY 64N35W…62N35W…57N42W…
51N46W…54N52W…60N44W…64N41W…64N35W WINDS 30 TO 45 KT.
SEAS 10 TO 20 FT. ALSO WITHIN 360 NM W SEMICIRCLE WINDS 20 TO 30
KT. SEAS 9 TO 14 FT.
.24 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED WITH LOW
52N41W BELOW.
…STORM WARNING…
.LOW 51N38W 999 MB MOVING NW 10 KT. WITHIN 60 NM OF CENTER…AND
120 NM NE OF A FRONT FROM 51N38W TO 47N37W WINDS 25 TO 40 KT.
SEAS 9 TO 13 FT.
.24 HOUR FORECAST LOW 52N41W 995 MB. WITHIN 120 NM W AND NW OF A
LINE FROM 57N43W TO 61N40W WINDS 40 TO 55 KT. SEAS 16 TO 24 FT.
ELSEWHERE WITHIN AN AREA BOUNDED BY 63N39W…58N4
