FZNT01 KWBC 162148
HSFAT1 2230
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON SEP 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
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 16.
24 HOUR FORECAST VALID 1800 UTC SEP 17.
48 HOUR FORECAST VALID 1800 UTC SEP 18.
.WARNINGS.
…STORM WARNING…
.LOW 49N37W 987 MB MOVING NE 20 KT. WITHIN 180 NM W AND N
SEMICIRCLES WINDS 40 TO 50 KT. SEAS 11 TO 21 FT. ALSO FROM 39N
TO 52N E OF 47W WINDS 25 TO 40 KT. SEAS 9 TO 16 FT. ELSEWHERE E
OF A LINE FROM 56N46W TO 37N50W WINDS LESS THAN 25 KT. SEAS TO
12 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW E OF AREA 55N30W 989 MB. WITHIN 240 NM W
SEMICIRCLE AREA OF NW TO N WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
ALSO WITHIN 420 NM W SEMICIRCLE WINDS TO 25 KT. SEAS TO 10 FT.
ELSEWHERE N OF 61N E OF GREENLAND WINDS LESS THAN 25 KT. SEAS TO
8 FT IN SE SWELL.
.48 HOUR FORECAST LOW MOVED WELL NE OF AREA. CONDITIONS
DESCRIBED WITH LOW 50N39W BELOW.
…GALE WARNING…
.LOW JUST S OF AREA 30N50W DRIFTING SE. WITHIN 300 NM N
SEMICIRCLE AREA OF NE WINDS 20 TO 30 KT. SEAS TO 12 FT.
ELSEWHERE WITHIN 600 NM NW QUADRANT AREA OF NE TO E WINDS TO 25
KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW JUST S OF AREA 30N50W 1006 MB. WITHIN 120
NM N SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW S OF AREA 29N49W 1007 MB. WITHIN 240 NM N
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ALSO WITHIN 360
NM NE AND 420 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
ELSEWHERE WITHIN 840 NM NW QUADRANT AREA OF E TO SE WINDS TO 25
KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW S OF AREA 27N53W 1006 MB. S OF 34N BETWEEN
43W AND 58W AREA OF NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
ELSEWHERE WITHIN 720 NM NW AND NE QUADRANTS AREA OF NE TO E
WINDS TO 25 KT. SEAS TO 9 FT.
…GALE WARNING…
.LOW 57N61W 1003 MB MOVING SE 25 KT. WITHIN 420 NM NW…180 NM
NE…840 NM SE…AND 540 NM SW QUADRANTS INCLUDING THE GULF OF
SAINT LAWRENCE…WINDS 20 TO 30 KT. SEAS TO 9 FT.
.18 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 52N50W 1001 MB.
FROM 42N TO 50N BETWEEN 41W AND 50W WINDS 25 TO 35 KT. SEAS 8 TO
13 FT.
.24 HOUR FORECAST LOW 49N44W 1000 MB. FROM 42N TO 50N BETWEEN
37W AND 49W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. ALSO WITHIN 360
NM NW…180 NM NE…600 NM SE…AND 660 NM SW QUADRANTS WINDS TO
25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 50N39W 1001 MB. E OF A LINE FROM 55N45W TO
43N41W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. ELSEWHERE WITHIN 600
NM N AND 720 NM S QUADRANTS WINDS LESS THAN 25 KT. SEAS TO 9 FT
IN MIXED SWELL.
.SYNOPSIS AND FORECAST.
.POTENTIAL TROPICAL CYCLONE EIGHT NEAR 33.9N 78.8W 1006 MB AT
2100 UTC SEP 16 MOVING NNW OR 335 DEG AT 6 KT. MAXIMUM SUSTAINED
WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER WITHIN 120 NM S
SEMICIRCLE…350 NM NE QUADRANT AND 45 NM NW QUADRANT WITH SEAS
TO 14 FT. ALSO WITHIN 540 NM NE QUADRANT AREA OF NE TO E WINDS
20 TO 30 KT. SEAS TO 11 FT. ELSEWHERE WITHIN 300 NM SE AND 180
NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST POST-TROPICAL EIGHT NEAR 34.9N 80.9W. WITHIN
240 NM N OF A LINE FROM 36N76W TO 34N65W AREA OF NE TO E WINDS
TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSPATED. CONDITIONS DESCRIBED WITH LOW
38N74W BELOW.
.LOW E OF AREA 62N24W 981 MB MOVING NE 25 KT. E OF A LINE FROM
56N46W TO 65N37W AREA OF N WINDS LESS THAN 25 KT. SEAS 8 TO 14
FT IN NE TO E SWELL.
.24 HOUR FORECAST LOW MOVED WELL NE OF AREA. CONDITIONS
DESCRIBED WITH LOW 55N30W IN WARNINGS SECTION ABOVE.
.LOW 32N69W 1011 MB MOVING NW 05 KT. WITHIN 180 NM N SEMICIRCLE
AREA OF NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. ALSO WITHIN
420 NM NE AND 480 NM E QUADRANTS AREA OF E WINDS 20 TO 30 KT.
SEAS TO 11 FT. ELSEWHERE WITHIN 90 NM S SEMICIRCLE WINDS TO 25
KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW
34.9N 80.9W ABOVE.
.24 HOUR FORECAST NEW LO
