FZNT01 KWBC 142220
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU SEP 14 2023

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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).

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 N OF 31N 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, AND VOLCANIC ASH.

LESSER CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO

PRESERVE CONTINUITY WHERE APPROPRIATE. SEND FEEDBACK VIA 
HTTPS://OCEAN.WEATHER.GOV/CONTACT/INDEX.PHP (ALL LOWERCASE).

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 14. 
24 HOUR FORECAST VALID 1800 UTC SEP 15.
48 HOUR FORECAST VALID 1800 UTC SEP 16.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE MARGOT NEAR 36.9N 39.3W 978 MB AT 2100 UTC SEP 14
MOVING NE OR 050 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 70 KT GUSTS
85 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM NE QUADRANT...200
NM SE QUADRANT...120 NM SW QUADRANT...AND 150 NM NW QUADRANT. 
SEAS 12 FT OR GREATER WITHIN 300 NM OF CENTER EXCEPT 360 NM NW
QUADRANT WITH SEAS TO 30 FT. ELSEWHERE FROM 31N TO 45N BETWEEN
35W AND 55W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.24 HOUR FORECAST HURRICANE MARGOT NEAR 36.4N 38.8W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 200 NM NE QUADRANT...150 NM SE QUADRANT...120 NM SW
QUADRANT...AND 160 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
420 NM NE...240 NM SE...240 NM SW...AND 360 NM NW QUADRANTS WITH
SEAS TO 24 FT. ELSEWHERE FROM 31N TO 48N BETWEEN 35W AND 52W
WINDS 20 TO 33 KT. SEAS TO 12 FT.
.36 HOUR FORECAST TROPICAL STORM MARGOT NEAR 35.8N 39.2W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT.
.48 HOUR FORECAST TROPICAL STORM MARGOT NEAR 35.4N 40.4W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM NE QUADRANT...130 NM SE QUADRANT...110 NM SW
QUADRANT...AND 160 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
360 NM NE...240 NM SE...240 NM SW...AND 360 NM NW QUADRANTS WITH
SEAS TO 24 FT. ELSEWHERE FROM 31N TO 45N BETWEEN 35W AND 50W
WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.72 HOUR FORECAST TROPICAL STORM MARGOT NEAR 35.7N 43.3W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. EXTENDED OUTLOOK...USE FOR
GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM MARGOT NEAR 38.6N 42.6W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL MARGOT NEAR 40.2N
37.9W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

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

...STORM WARNING...
.LOW INLAND NEAR 55N69W 1008 MB MOVING NE 35 KT. FROM 47N TO 56N
BETWEEN 50W AND 61W WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST LOW 54N58W 1004 MB. WITHIN 540 NM SE OF A LINE
FROM LOW TO 59N46W WINDS 25 TO 35 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 60N49W 994 MB. WITHIN 600 NM SE QUADRANT
WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 48N TO 62N
BETWEEN 35W AND 63W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.36 HOUR FORECAST LOW 63N37W 986 MB. WITHIN 240 NM NW SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW 64N33W 978 MB. WITHIN 180 NM W SEMICIRCLE
WINDS 45 TO 60 KT. SEAS 15 TO 27 FT. ELSEWHERE WITHIN 420 NM W
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 12 TO 22 FT. ALSO WITHIN 660
NM SW QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.06 HOUR FORECAST...EXCEPT WHERE DESCRIBED WITH HURRICANE LEE...W
OF A LINE FROM 38N71W TO 32N75W WINDS 25 TO 35 KT. SEAS 10 TO 18
FT.
.24 HOUR FORECAST CONDITIONS ABSORBED BY HURRICANE LEE.

.SYNOPSIS AND FORECAST.

.LOW 67N63W 1002 MB NEARLY STATIONARY. WITHIN 360 NM SE AND E
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 66N59W 1005 MB. WINDS LESS THAN 25 KT. SEAS
LESS THAN 8 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.FROM 45N TO 48N BETWEEN 35W AND 44W WINDS TO 25 KT. SEAS TO 10
FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH HURRICANE
MARGOT IN WARNINGS SECTION ABOVE.

.EXCEPT WHERE DESCRIBED IN PART II BELOW WITH HURRICANE
LEE...FROM 31N TO 43N BETWEEN 55W AND 81W WINDS 20 TO 33 KT. SEAS
TO 12 FT.
.24 HOUR FORECAST EXCEPT WHERE DESCRIBED IN PART II BELOW WITH
HURRICANE LEE...FROM 31N TO 46N BETWEEN 52W AND 81W WINDS 20 TO
33 KT. SEAS TO 12 FT.
.48 HOUR FORECAST EXCEPT WHERE DESCRIBED IN PART II BELOW WITH
HURRICANE LEE...FROM 31N TO 48N BETWEEN 50W AND 81W WINDS 20 TO
33 KT. SEAS TO 12 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 50N
BETWEEN 62W AND 68W...AND FROM 54N TO 57N BETWEEN 53W AND 61W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 61N BETWEEN 45W AND
54W....AND FROM 43N TO 47N BETWEEN 49W AND 60W.
.48 HOUR FORECAST DENSE FOG N OF 62N E OF GREENLAND...FROM 46N TO
49N BETWEEN 50W AND 66W...AND N OF 64N E OF 60W.

.FORECASTER EHRBAR. 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 THU SEP 14.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 15.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 16.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE LEE NEAR 31.7N 68.3W 957 MB AT 2100 UTC SEP 14 MOVING 
N OR 360 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 
KT. TROPICAL STORM FORCE WINDS WITHIN 300 NM E SEMICIRCLE...200 
NM SW QUADRANT AND 210 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 450 NM NW AND SE QUADRANTS...435 NM NE QUADRANT AND 420 
NM SW QUADRANT WITH SEAS TO 46 FT. ELSEWHERE WITHIN 480 NM E 
SEMICIRCLE...450 NM SW QUADRANT AND 510 NM NW QUADRANT WINDS 20 
TO 33 KT. SEAS 10 TO 16 FT. REMAINDER OF AREA FROM 19N TO 27N 
BETWEEN 55W AND THE BAHAMAS AND ALSO N OF 27N BETWEEN 55W AND 
80W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE LEE NEAR 37.0N 66.9W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 270 NM E SEMICIRCLE...200 NM SW QUADRANT AND 230 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE QUADRANT...480 
NM SE QUADRANT...450 NM SW QUADRANT AND 420 NM NW QUADRANT WINDS 
20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 23N TO 27N 
BETWEEN 55W AND THE BAHAMAS AND N OF 27N BETWEEN 55W AND 80W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW TO N SWELL...EXCEPT 
IN N TO NE SWELL W OF 70W.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL LEE NEAR 43.3N 
66.4W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM 
FORCE WINDS WITHIN 240 NM NE QUADRANT...270 NM SE QUADRANT...180 
NM SW QUADRANT...AND 140 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 390 NM NE QUADRANT...510 NM SE QUADRANT...540 NM SW 
QUADRANT AND 120 NM NW QUADRANT WITH SEAS TO 35 FT. ELSEWHERE 
WITHIN 450 NE QUADRANT...540 NM SE QUADRANT...600 NM SW AND 0 NM 
NW QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF 
AREA N OF 24N BETWEEN 55W AND THE BAHAMAS AND N OF 27N BETWEEN 
55W AND 80W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW TO N 
SWELL...EXCEPT IN N TO NE SWELL W OF 70W.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL LEE NEAR 48.6N 
61.4W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL LEE NEAR 53.7N 
48.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST...DISSIPATED.

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.

.HURRICANE MARGOT WELL N OF AREA NEAR 37N39W MB AT 2100 UTC SEP 
14 MOVING NE OR 050 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 70 KT 
GUSTS 85 KT. OVER FORECAST WATERS N OF LINE FROM 31N36W TO 
26N47W TO 23N55W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N TO NE 
SWELL...EXCEPT IN MIXED SWELL W OF 48W, 
.24 HOUR FORECAST N OF 30N BETWEEN 39N AND 45W AND NW OF LINE 
FROM 30N53W TO 29N55W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N 
TO NE SWELL...EXCEPT IN MIXED SWELL W OF 48W.
.48 HOUR FORECAST N OF LINE FROM 29N36W TO 27N44W TO 28N51W TO 
27N55W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N TO NE SWELL... 
EXCEPT IN MIXED SWELL W OF 49W. 

.ATLC LOW PRES NEAR 13N39W 1009 MB. FROM 13N TO 21N BETWEEN 35W 
AND 39W E WINDS 20 TO 25 KT OR LESS. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
15N43W 1006 MB. FROM 15N TO 20N BETWEEN 35W AND 45W E WINDS 20 
TO 25 KT. SEAS 8 TO 10 FT. FROM 13N TO 16N BETWEEN 40W AND 43W 
SE TO S WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 13N TO 
23N BETWEEN 36W AND 47W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
MIXED E AND NW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
18N46W 1004 MB. FROM 18N TO 24N BETWEEN 41W AND 49W E TO SE 
WINDS 20 TO 25 KT...EXCEPT N TO NE BETWEEN 46W AND 49W. SEAS 10 
TO 12 FT IN SE SWELL. ELSEWHERE FROM 16N TO 27N BETWEEN 38W AND 
50W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.

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


.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

$$