FZNT01 KWBC 282210
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT SEP 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 28.
24 HOUR FORECAST VALID 1800 UTC SEP 29.
48 HOUR FORECAST VALID 1800 UTC SEP 30.
.WARNINGS.
…HURRICANE WARNING…
.HURRICANE ISAAC NEAR 41.3N 38.4W 968 MB AT 2100 UTC SEP 28
MOVING NE OR 045 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 85 KT
GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM S
SEMICIRCLE…170 NM NE QUADRANT AND 90 NM NW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 180 NM NE QUADRANT…360 NM SE
QUADRANT…330 NM SW QUADRANT…AND 240 NM NW QUADRANT WITH SEAS
TO 32 FT. ELSEWHERE S OF 45N E OF 44W WINDS 20 TO 33 KT. SEAS TO
12 FT.
.24 HOUR FORECAST HURRICANE ISAAC NEAR 43.7N 35.1W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 130 NM S SEMICIRCLE…170 NM NE QUADRANT AND 150 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT…540
NM SE QUADRANT…300 NM SW QUADRANT…360 NM NW QUADRANT WITH
SEAS TO 28 FT. ELSEWHERE S OF 49N E OF 41W WINDS 20 TO 33 KT.
SEAS TO 12 FT.
.36 HOUR FORECAST POST-TROPICAL ISAAC NEAR 44.8N 32.3W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE ISAAC NEAR 46.1N 30.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 140 NM NE QUADRANT…100 NM SE QUADRANT…90 NM SW
QUADRANT…AND 120 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
240 NM NE QUADRANT…360 NM SE QUADRANT…AND 180 NM W SEMICIRCLE
WITH SEAS TO 23 FT. ELSEWHERE FROM 44N TO 51N E OF 40W WINDS 20
TO 33 KT. SEAS TO 12 FT.
…GALE WARNING…
.LOW 43N57W 1000 MB MOVING SE 10 KT. S OF 48N BETWEEN 42W AND 62W
WINDS 25 TO 35 KT…HIGHEST N AND W OF CENTER. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 40N52W 999 MB. S OF 47N BETWEEN 41W AND 62W
WINDS 20 TO 30 KT…HIGHEST N AND W OF CENTER. SEAS 8 TO 15 FT IN
A MIXED SWELL.
.48 HOUR FORECAST LOW 41N45W 999 MB. S OF 50N E OF 55W WINDS 25
TO 35 KT…HIGHEST SE OF CENTER. SEAS 8 TO 14 FT IN A MIXED
SWELL.
…GALE WARNING…
.N OF 62N BETWEEN W GREENLAND COAST AND 56W WINDS TO 25 KT. SEAS
LESS THAN 8 FT.
.12 HOUR FORECAST WITHIN 180 NM OF W GREENLAND COAST N OF 60N
WINDS 25 TO 40 KT. SEAS 8 TO 14 FT…HIGHEST NEAR 67N.
.24 HOUR FORECAST WITHIN 120 NM OF W GREENLAND COAST N OF 60N
WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST NEW LOW 61N47W 1010 MB. WITHIN 120 NM SW
SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.
.SYNOPSIS AND FORECAST.
.LOW E OF AREA 64N31W 1005 MB MOVING SE 15 KT. N OF 63N E OF 37W
WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.
.LOW 39N75W 1009 MB MOVING SE 25 KT. S OF 41N W OF 70W WINDS LESS
THAN 25 KT. SEAS TO 11 FT.
24 HOUR FORECAST LOW 34N64W 1011 MB. WITHIN 300 NM SW SEMICIRCLE
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DESCRIBED BY LOW
41N45W ABOVE IN WARNINGS SECTION.
.24 HOUR FORECAST NEW LOW 65N59W 993 MB. N OF 63N W OF 57W WINDS
20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 46N TO 53N W OF 55W…INCLUDING THE GULF
OF SAINT LAWRENCE…AREA OF N TO NW WINDS 20 TO 30 KT. SEAS LESS
THAN 8 FT.
.48 HOUR FORECAST NEW LOW 65N58W 1004 MB. WITHIN 120 S SEMICIRCLE
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST NEW LOW 64N38W 1009 MB. WITHIN 240 NM SE OF A
LINE FROM 64N35W TO 56N50W WINDS TO 25 KT. SEAS TO 8 FT.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 64N W OF
GREENLAND COAST.
.24 HOUR FORECAST DENSE FOG NW OF A LINE FROM 60N60W TO 67N54W
AND N OF 64N E OF GREENLAND.
.48 HOUR FORECAST DENSE FOG N OF 60N BETWEEN 45W AND 51W.
.FORECASTER ANDERSON. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO
SYNOPSIS VALID 1800 UTC SAT SEP 28.
24 HOUR FORECAST VALID 1800 UTC SUN SEP 29.
48 HOUR FORECAST VALID 1800 UTC MON SEP 30.
.WARNINGS.
…ATLC TROPICAL STORM WARNING…
.TROPICAL STORM JOYCE NEAR 20.3N 46.7W 1003 MB AT 2100 UTC SEP
28 MOVING WNW OR 300 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE
QUADRANT…20 NM SE QUADRANT…0 NM SW QUADRANT…AND 100 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM S SEMICIRCLE…120
NM NE QUADRANT AND 90 NM NW QUADRANT WITH SEAS TO 14 FT.
ELSEWHERE WITHIN 22N44W TO 22N45W TO 22N48W TO 20N48W TO 19N47W
TO 20N45W TO 22N44W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT.
REMAINDER OF AREA WITHIN 24N44W TO 24N46W TO 22N49W TO 19N49W TO
18N47W TO 20N41W TO 24N44W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN E SWELL.
.24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 21.7N 48.9W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM NE QUADRANT…20 NM SE QUADRANT…0 NM SW
QUADRANT…AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60
NM N SEMICIRCLE WITH SEAS TO 13 FT. ELSEWHERE WITHIN 22N48W TO
22N49W TO 22N50W TO 21N50W TO 21N49W TO 21N48W TO 22N48W WINDS 20
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN
22N46W TO 24N48W TO 22N51W TO 20N51W TO 19N49W TO 21N48W TO
22N46W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E TO SE SWELL.
.48 HOUR FORECAST TRO
