FZNT01 KWBC 292158
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SUN SEP 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 29.
24 HOUR FORECAST VALID 1800 UTC SEP 30.
48 HOUR FORECAST VALID 1800 UTC OCT 01.
.WARNINGS.
…TROPICAL STORM WARNING…
.TROPICAL STORM ISAAC NEAR 43.8N 34.7W 973 MB AT 2100 UTC SEP 29
MOVING NE OR 050 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM NE
QUADRANT…130 NM SE QUADRANT…120 NM SW QUADRANT…AND 160 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM NE
QUADRANT…540 NM SE QUADRANT…420 NM SW QUADRANT…AND 390 NM
NW QUADRANT WITH SEAS TO 28 FT. ELSEWHERE S OF 49N E OF 41W WINDS
20 TO 33 KT. SEAS TO 12 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 45.8N 28.6W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 120 NM OF CENTER EXCEPT 100 NM NW QUADRANT. SEAS 12
FT OR GREATER WITHIN 180 NM NE QUADRANT…360 NM SE
QUADRANT…300 NM SW QUADRANT…AND 240 NM NW QUADRANT WITH SEAS
TO 25 FT. ELSEWHERE WITHIN 540 NM NW QUADRANT WINDS 20 TO 33 KT.
SEAS TO 25 FT.
.36 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 47.4N 25.8W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 49.3N 24.2W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM S SEMICIRCLE…170 NM NE QUADRANT AND 70 NM NW
QUADRANT. SEAS 12 FT OR GREATER
WITHIN 150 NM N SEMICIRCLE…120 NM SE QUADRANT…AND 180 NM SW
QUADRANT WITH SEAS TO 17 FT.
…GALE WARNING…
.LOW 40N52W 997 MB MOVING E 15 KT. S OF 47N BETWEEN 41W AND 62W
WINDS 20 TO 30 KT. SEAS 8 TO 14 FT…HIGHEST N AND W OF CENTER.
.24 HOUR FORECAST LOW 41N45W 999 MB. BETWEEN 300 NM AND 600 NM SE
QUADRANT WINDS 25 TO 35 KT. S
