FZNT01 KWBC 300934
HSFAT1 1030
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC MON SEP 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 30.
24 HOUR FORECAST VALID 0600 UTC OCT 01.
48 HOUR FORECAST VALID 0600 UTC OCT 02.
.WARNINGS.
…TROPICAL STORM WARNING…
.TROPICAL STORM ISAAC NEAR 44.7N 31.3W 975 MB AT 0900 UTC SEP 30
MOVING ENE OR 060 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM NE
QUADRANT…130 NM SE QUADRANT…150 NM SW QUADRANT…AND 190 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 420 NM NW AND SE
QUADRANTS…270 NM NE QUADRANT AND 360 NM SW QUADRANT WITH SEAS
TO 28 FT. ELSEWHERE FROM 31N TO 50N E OF 40W WINDS 20 TO 33 KT.
SEAS TO 12 FT.
.12 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 45.8N
28.1W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 47.4N
25.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM
FORCE WINDS WITHIN 100 NM OF CENTER EXCEPT 150 NM NE QUADRANT.
SEAS 12 FT OR GREATER WITHIN 120 NM NE QUADRANT…330 NM SE
QUADRANT…210 NM SW QUADRANT AND 180 NM NW QUADRANT WITH SEAS TO
22 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 51.3N
22.3W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM
FORCE W
