FZNT01 KWBC 290944
HSFAT1 1030
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 29.
24 HOUR FORECAST VALID 0600 UTC SEP 30.
48 HOUR FORECAST VALID 0600 UTC OCT 01.
.WARNINGS.
…HURRICANE WARNING…
.HURRICANE ISAAC NEAR 42.6N 36.5W 969 MB AT 0900 UTC SEP 29
MOVING NE OR 045 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 70 KT
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM NE
QUADRANT…130 NM SE QUADRANT…120 NM SW QUADRANT…AND 160 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM NE
QUADRANT…450 NM SE QUADRANT…330 NM SW QUADRANT…AND 270 NM
NW QUADRANT WITH SEAS TO 31 FT. ELSEWHERE S OF 48N E OF 45W WINDS
20 TO 33 KT. SEAS TO 12 FT.
.12 HOUR FORECAST TROPICAL STORM ISAAC NEAR 43.5N 34.9W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 44.5N 31.8W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 160 NM NE QUADRANT…130 NM SE QUADRANT…120 NM SW
QUADRANT…AND 150 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
300 NM NE QUADRANT…330 NM SE QUADRANT…540 NM SW QUADRANT AND
360 NM NW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE S OF 48N E OF
45W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.36 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 46.0N
28.7W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 47.8N
26.3W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM
FORCE WINDS WITHIN 130 NM NE QUADRANT…70 NM SE QUADRANT…30
NM SW QUADRANT…AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER
WITHIN 150 NM NE QUADRANT…480 NM SE QUADRANT…240 NM SW
QUADRANT AND 180 NM NW QUADRANT WITH SEAS TO 19 FT. ELSEWHERE
FROM 32N TO 51N E OF 40W WINDS 20 TO 33 KT. SEAS TO 12 FT.
…GALE WARNING…
.LOW 42N54W 998 MB MOVING SE 10 KT. BETWEEN 60 NM AND 240 NM
S…120 NM AND 360 NM W AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS
8 TO 15 FT. ELSEWHERE FROM 33N TO 48N BETWEEN 45W AND 62W WINDS
20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 40N49W 999 MB. WITHIN AN AREA BOUNDED BY A
LINE FROM 31N45W TO 47N45W TO 40N61W TO 31N45W WINDS 20 TO 30 KT.
SEAS 8 TO 14 FT IN MIXED SWELL…HIGHEST E OF 48W.
.48 HOUR FORECAST LOW 44N44W 997 MB. FROM 31N TO 50N BETWEEN 45W
AND 40W…FROM 38N TO 48N BETWEEN 45W AND 55W AND WITHIN 900 NM
NW QUADRANT…INCLUDING THE GULF OF SAINT LAWRENCE WINDS 20 TO 30
KT. SEAS 8 TO 14 FT…HIGHEST E OF 47W. SEAS TO 8 FT IN THE GULF
OF SAINT LAWRENCE.
…GALE WARNING…
.N OF 63N E OF 58W TO THE GREENLAND COAST AREA OF S WINDS 25 TO
35 KT. SEAS 8 TO 12 FT.
.12 HOUR FORECAST WITHIN 120 NM OF W GREENLAND COAST N OF 60N
AREA OF SE TO S WINDS 25 TO 35 KT. SEAS 8 TO 14 FT…HIGHEST N OF
63N.
.24 HOUR FORECAST WITHIN 90 NM OF W GREENLAND COAST BETWEEN 61N
AND 63N AREA OF SE TO S WINDS 25 TO 35 KT. SEA
