322
FZNT01 KWBC 281604
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT SEP 28 2024

CCODE/2:31:04:11:00/AOE+AOW/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
VOSOPS@NOAA.GOV(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 1200 UTC SEP 28.
24 HOUR FORECAST VALID 1200 UTC SEP 29.
48 HOUR FORECAST VALID 1200 UTC SEP 30.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ISAAC NEAR 39.3N 41.3W 968 MB AT 0900 UTC SEP 28
MOVING NE OR 055 DEG AT 17 KT. MAXIMUM SUSTAINED WINDS 90 KT
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N
SEMICIRCLE...130 NM SE QUADRANT AND 110 NM SW QUADRANT. SEAS 12
FT OR GREATER WITHIN 360 NM S SEMICIRCLE...120 NM NE QUADRANT AND
240 NM NW QUADRANT WITH SEAS TO 33 FT. ELSEWHERE S OF 45N E OF
47W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.24 HOUR FORECAST HURRICANE ISAAC NEAR 42.1N 37.0W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 110 NM
SW QUADRANT. SEAS 12 FT OR GREATER
WITHIN 300 NM NE QUADRANT...540 NM SE QUADRANT...240 NM SW
QUADRANT...AND 360 NM NW QUADRANT WITH SEAS TO 31 FT. ELSEWHERE S
OF 48N E OF 43W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL ISAAC NEAR 44.6N 33.1W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 170 NM NE QUADRANT...130 NM SE QUADRANT...110 NM SW
QUADRANT...AND 150 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
240 NM NE QUADRANT...420 NM SE QUADRANT...300 NM SW
QUADRANT...AND 420 NM NW QUADRANT WITH SEAS TO 26 FT. ELSEWHERE
FROM 42N TO 51N E OF 42W WINDS 20 TO 33 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW 43N57W 1001 MB MOVING SE 10 KT. FROM 36N TO 46N BETWEEN 47W
AND 63W WINDS 25 TO 40 KT...HIGHEST N AND NW OF CENTER. SEAS 8 TO
13 FT.
.24 HOUR FORECAST LOW 41N52W 998 MB. S OF 47N BETWEEN 42W AND 62W
WINDS 25 TO 35 KT...HIGHEST N AND NW OF CENTER. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 40N47W 999 MB. FROM S OF 47N BETWEEN 42W
AND 58W 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.
.24 HOUR FORECAST WITHIN 120 NM OF W GREENLAND COAST N OF 60N
WINDS 25 TO 40 KT. SEAS 8 TO 14 FT...HIGHEST NEAR 67N.
.48 HOUR FORECAST NEW LOW 61N50W 1008 MB. FROM 55N TO 62N BETWEEN
46W AND 52W WINDS 20 TO 30 KT. SEAS TO 8 FT.

.SYNOPSIS AND FORECAST.

.LOW E OF AREA 65N31W 1008 MB MOVING SE 15 KT. N OF 64N E OF 37W
WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

.LOW 39N78W 1009 MB MOVING SE 25 KT. S OF 41N W OF 69W WINDS LESS
THAN 25 KT. SEAS TO 10 FT.
24 HOUR FORECAST LOW 35N64W 1011 MB. WITHIN 120 NM N AND NW
SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DESCRIBED BY LOW
40N47W ABOVE IN WARNINGS SECTION.

.24 HOUR FORECAST N OF 55N E OF 59W AREA OF W TO NW WINDS 20 TO
30 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM 46N TO 53N W OF 54W...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 65N59W 1004 MB. WITHIN 120 S SEMICIRCLE
WINDS TO 25 KT. SEAS TO 8 FT.

.48 HOUR FORECAST NEW LOW 63N39W 1010 MB. WITHIN 240 NM SE OF A
LINE FROM 64N35W TO 55N50W WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 64N W OF
GREENLAND COAST AND N OF 62N E 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 1200 UTC SAT SEP 28.
24 HOUR FORECAST VALID 1200 UTC SUN SEP 29.
48 HOUR FORECAST VALID 1200 UTC MON SEP 30.

.WARNINGS.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM JOYCE NEAR 20.0N 46.0W 1004 MB AT 1500 UTC SEP
28 MOVING NW OR 305 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM S
SEMICIRCLE...40 NM NE QUADRANT AND 90 NM NW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 120 NM NE QUADRANT...30 NM SE QUADRANT...60
NM SW QUADRANT...AND 90 NM NW QUADRANT WITH SEAS TO 15 FT.
ELSEWHERE WITHIN 22N44W TO 22N47W TO 21N48W TO 19N47W TO 19N45W
TO 20N44W TO 22N44W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT.
REMAINDER OF AREA WITHIN 22N41W TO 24N44W TO 21N48W TO 18N48W TO
17N45W TO 19N42W TO 22N41W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN E SWELL.
.24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 21.1N 48.6W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 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 22N47W TO
22N49W TO 21N49W TO 20N49W TO 20N48W TO 21N47W TO 22N47W WINDS 20
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 22N44W TO
24N46W TO 24N48W TO 22N53W TO 19N51W TO 19N46W TO 22N44W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN E TO SE SWELL.
.48 HOUR FORECAST TROPICAL STORM JOYCE NEAR 22.2N 49.6W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 0 NM W SEMICIRCLE...30 NM NE QUADRANT AND 20 NM SE
QUADRANT. SEAS TO 12 FT WITHIN 45 NM NE QUADRANT. ELSEWHERE
WITHIN 23N48W TO 24N50W TO 22N51W TO 21N50W TO 21N49W TO 22N48W
TO 23N48W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 20N35W TO 19N36W TO 17N36W TO 16N35W TO 20N35W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 22N35W TO 21N39W TO 19N40W TO 16N39W TO
15N35W TO 22N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.48 HOUR FORECAST WITHIN 20N35W TO 22N39W TO 20N41W TO 17N41W TO
15N35W TO 20N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.

.ATLC 48 HOUR FORECAST WITHIN 31N41W TO 31N49W TO 31N57W TO
31N56W TO 30N45W TO 31N41W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO
10 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FORECASTER ERA. NATIONAL HURRICANE CENTER.

$$