457
FZPN01 KWBC 260418
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC THU SEP 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
VOSOPS@NOAA.GOV(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
PACIFIC 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

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0000 UTC SEP 26.
24 HOUR FORECAST VALID 0000 UTC SEP 27.
48 HOUR FORECAST VALID 0000 UTC SEP 28.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 48N150W 986 MB MOVING NE 30 KT. FROM 42N TO 48N BETWEEN 153W
AND 161W WINDS 35 TO 50 KT. SEAS 12 TO 20 FT. ELSEWHERE FROM 37N
TO 50N BETWEEN 140W AND 168W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.18 HOUR FORECAST LOW 50N139W 976 MB. WITHIN 180 NM SW QUADRANT
WINDS 50 TO 65 KT. SEAS 16 TO 28 FT.
.24 HOUR FORECAST LOW 52N134W 975 MB. WITHIN 120 NM SW OF A LINE
FROM 50N133W TO 52N137W WINDS 50 TO 65 KT. SEAS 20 TO 30 FT. ALSO
WITHIN 180 NM OF LOW EXCEPT 240 NM SE AND 300 NM SW QUADRANTS
WINDS 40 TO 55 KT. SEAS 12 TO 24 FT. ELSEWHERE FROM 41N TO 56N E
OF 140W WINDS 25 TO 40 KT. SEAS 8 TO 20 FT...HIGHEST SW OF THE
LOW.
.48 HOUR FORECAST LOW WELL INLAND. E OF A LINE FROM 50N140W TO
58N146W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...STORM WARNING...
.FROM 35N TO 41N BETWEEN 175E AND 160E WINDS 20 TO 30 KT. SEAS TO
12 FT.
.24 HOUR FORECAST LOW W OF AREA 40N159E 1004 MB. WITHIN 180 NM N
AND NE QUADRANTS WINDS 35 TO 50 KT. SEAS 10 TO 18 FT. ELSEWHERE
FROM 34N TO 43N BETWEEN 172E AND 160E WINDS 25 TO 40 KT. SEAS 8
TO 14 FT.
.48 HOUR FORECAST LOW 39N173E 1003 MB. FROM 39N TO 42N BETWEEN
175W AND 167E WINDS 35 TO 50 KT. SEAS 10 TO 20 FT. ELSEWHERE FROM
31N TO 43N BETWEEN 170W AND 160E WINDS 25 TO 40 KT. SEAS 9 TO 18
FT.

...GALE WARNING...
.LOW NW OF AREA 61N175E 995 MB MOVING SE 15 KT. WITHIN 300 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE N OF 48N W
OF 175W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 57N176W 998 MB. WITHIN 360 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 9 TO 18 FT. ELSEWHERE N OF 48N BETWEEN
160W AND 170E WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 54N163W 1000 MB. WITHIN 420 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM 44N TO 60N
BETWEEN 151W AND 176W WINDS 20 TO 30 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.LOW 58N149W 988 MB MOVING S 10 KT. N OF 50N WITHIN 540 NM SW
QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 56N148W 999 MB. WITHIN 360 NM S AND SW OF A
LINE FROM 52N140W TO 59N155W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 37N TO 41N E OF 127W WINDS TO 25 KT. SEAS
TO 11 FT.
.48 HOUR FORECAST FROM 34N TO 47N BETWEEN 130W AND 123W WINDS 20
TO 30 KT. SEAS 8 TO 14 FT WITH NW SWELL.

.RESUSPENDED ASH IS OCCURRING FROM SHEVELUCH VOLCANO AT POSITION
56.7N161.4E ON KAMCHATKA ISLAND. TRACE AMOUNTS OF ASHFALL
MAYDRIFT E AND REACH THE SURFACE. IF MARINERS ENCOUNTER VOLCANIC
ASH OF FLOATING VOLCANIC DEBRIS PLEASE REPORT THE OBSERVATION TO
THE OCEAN PREDICTION CENTER BY CALLING 301-683-1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 49N
BETWEEN 143W AND 150W.
.24 HOUR FORECAST DENSE FOG FROM 57N TO 61N BETWEEN 165W AND
179W.
.48 HOUR FORECAST DENSE FOG FROM 57N TO 62N BETWEEN 160W AND 170W
AND FROM 37N TO 40N BETWEEN 170W AND 180W.

.FORECASTER COLLINS. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0000 UTC THU SEP 26.
24 HOUR FORECAST VALID 0000 UTC FRI SEP 27.
48 HOUR FORECAST VALID 0000 UTC SAT SEP 28.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM JOHN NEAR 17.0N 102.1W 984 MB AT 0300 UTC SEP 26
MOVING NW OR 325 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE
QUADRANT...130 NM SE QUADRANT...110 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM N SEMICIRCLE... 300
NM SE QUADRANT AND 240 NM SW QUADRANT WITH SEAS TO 12 FT.
ELSEWHERE WITHIN 17N99W TO 18N104W TO 14N108W TO 10N133W TO
12N109W TO 11N98W TO 17N99W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA WITHIN 26N116W TO 19N111W TO 12N118W TO 08N105W
TO 10N86W TO 26N116W...INCLUDING NEAR CABO CORRIENTES AND THE
GULF OF TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN
MIXED SWELL.
.12 HOUR FORECAST HURRICANE JOHN NEAR 17.3N 102.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.24 HOUR FORECAST HURRICANE JOHN NEAR 17.7N 102.5W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM N SEMICIRCLE...150 NM SE QUADRANT AND 120 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 420 NM SW QUADRANT...360
NM SE QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 19 FT.
ELSEWHERE WITHIN 16N97W TO 19N104W TO 13N108W TO 10N113W TO
10N102W TO 13N97W TO 16N97W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA WITHIN 17N106W TO 28N115W TO 14N114W TO 10N117W
TO 08N103W TO 13N89W TO 17N106W...INCLUDING NEAR CABO CORRIENTES
AND SEBASTIAN VIZCAINO BAY AND THE GULF OF TEHUANTEPEC...WINDS
20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION JOHN INLAND NEAR 18.4N
103.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR
GREATER WITHIN 480 NM SW QUADRANT AND 450 NM SE QUADRANT WITH
SEAS TO 17 FT. ELSEWHERE WITHIN 14N97W TO 15N98W TO 12N106W TO
09N106W TO 09N103W TO 11N98W TO 14N97W WINDS 20 TO 30 KT. SEAS 8
TO 12 FT. REMAINDER OF AREA WITHIN 24N112W TO 30N116W TO 20N121W
TO 10N116W TO 07N105W TO 12N90W TO 24N112W...INCLUDING NEAR CABO
CORRIENTES AND SEBASTIAN VIZCAINO BAY AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED
SWELL.

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.

.WITHIN 30N128W TO 30N140W TO 24N140W TO 27N134W TO 30N128W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN 30N123W TO 30N130W TO 23N140W TO
21N140W TO 21N136W TO 26N128W TO 30N123W WINDS 20 KT OR LESS.
SEAS 8 FT IN NW SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.18 HOUR FORECAST WITHIN 12N129W TO 12N131W TO 11N133W TO
10N133W TO 10N132W TO 11N130W TO 12N129W WINDS 20 KT OR LESS.
SEAS 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 12N128W TO 13N130W TO 12N131W TO
10N132W TO 10N130W TO 11N128W TO 12N128W WINDS 20 KT OR LESS.
SEAS 8 FT IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 13N125W TO 14N126W TO 14N127W TO
12N128W TO 11N127W TO 11N125W TO 13N125W WINDS 20 KT OR LESS.
SEAS 8 FT IN NW SWELL.

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

CONVECTION VALID AT 0330 UTC THU SEP 26...

.TROPICAL STORM JOHN...NUMEROUS MODERATE TO STRONG FROM 13N TO
19N BETWEEN 100W AND 106W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 13N110W TO 12N130W TO BEYOND
10N140W. SCATTERED MODERATE FROM 10N TO 14N BETWEEN 111W AND 120W
AND FROM 08N TO 13N BETWEEN 129W AND 140W.


.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.

$$