939
FZPN01 KWBC 262224
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SEP 26.
24 HOUR FORECAST VALID 1800 UTC SEP 27.
48 HOUR FORECAST VALID 1800 UTC SEP 28.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 50N137W 978 MB MOVING NE 30 KT. WITHIN 180 NM SW
SEMICIRCLE...AND WITHIN 180 NM E OF A LINE FROM 52N136W TO
48N130W WINDS 40 TO 55 KT. SEAS 14 TO 24 FT. ELSEWHERE WITHIN AN
AREA BOUNDED BY A LINE FROM 40N149W TO 50N155W TO 57N134W TO
57N128W TO 47N123W TO 40N134W WINDS 25 TO 40 KT. SEAS 9 TO 18
FT.
.06 HOUR FORECAST LOW 52N134W 976 MB. FROM 50N TO 53N E OF
130W...AND WITHIN 120 NM SW SEMICIRCLE WINDS 55 TO 70 KT. SEAS 15
TO 26 FT.
.18 HOUR FORECAST LOW 55N128W 1000 MB. FROM 48N TO 55N E OF 150W
WINDS 25 TO 35 KT. SEAS 10 TO 23 FT...HIGHEST NEAR VANCOUVER
ISLAND.
.24 HOUR FORECAST LOW DISSIPATED. FROM 39N TO 52N E OF 144W WINDS
LESS THAN 25 KT. SEAS 8 TO 17 FT IN MIXED SWELL.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...STORM WARNING...
.LOW W OF AREA NEAR 39N155E 1004 MB. WITHIN 300 NM N OF A LINE
FROM 40N160E TO 34N173E WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 40N167E 1002
MB...AND NEW SECOND CENTER 40N175E 1002 MB. WITHIN 120 NM N OF A
LINE FROM MAIN CENTER TO SECOND CENTER...AND WITHIN 120 NM NE
QUADRANT OF SECOND CENTER WINDS 40 TO 50 KT. SEAS 12 TO 20 FT.
ELSEWHERE FROM 34N TO 45N W OF 175W WINDS 25 TO 40 KT. SEAS 8 TO
16 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N177W 1002 MB
AND SECOND CENTER 39N168W 1002 MB. WITHIN 120 NM N OF A LINE FROM
MAIN CENTER TO SECOND CENTER...AND WITHIN 120 NM NE QUADRANT OF
SECOND CENTER WINDS 40 TO 50 KT. SEAS 12 TO 18 FT. ELSEWHERE FROM
34N TO 44N W OF 159W WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 58N174W 999 MB MOVING NE 10 KT AND
SECOND CENTER 58N179W 998 MB MOVING SE 20 KT. WITHIN 300 NM N OF
MAIN CENTER...AND WITHIN 540 NM SE...AND 480 NM SW QUADRANTS OF
SECOND CENTER WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 59N166W 999 MB AND
SECOND CENTER 54N167W 1000 MB. WITHIN 480 NM W SEMICIRCLE OF MAIN
CENTER...AND WITHIN 480 NM S SEMICIRCLE OF SECOND CENTER WINDS 25
TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST COMBINED LOW 58N163W 998 MB. WITHIN AN AREA
BOUNDED BY A LINE FROM 48N160W TO 65N175W TO 65N160W TO 48N141W
TO 48N160W WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 56N170W 1001 MB. WITHIN 360 NM SW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.

.SYNOPSIS AND FORECAST.

.FROM 37N TO 41N BETWEEN 124W AND 127W WINDS 20 TO 30 KT. SEAS TO
10 FT.
.24 HOUR FORECAST FROM 35N TO 42N BETWEEN 123W AND 126W WINDS 20
TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST FROM 34N TO 47N BETWEEN 124W AND 128W WINDS 20
TO 30 KT. SEAS 8 TO 14 FT.

.RESUSPENDED ASH IS OCCURRING FROM SHIVELUCH VOLCANO AT POSITION
56.7N161.4E ON KAMCHATKA ISLAND. TRACE AMOUNTS OF ASHFALL
MAY DRIFT 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.

.24 HOUR FORECAST DENSE FOG VSBY OCCASIONALLY LESS THAN 1 NM FROM
58N TO 64N BETWEEN 170W AND 163W.
.48 HOUR FORECAST DENSE FOG FROM 61N TO 64N BETWEEN 162W AND
170W.

.FORECASTER BYRD. 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 1800 UTC THU SEP 26.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 27.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 28.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE JOHN NEAR 17.6N 102.8W 979 MB AT 2100 UTC SEP 26
MOVING NW OR 325 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 65 KT
GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM W
SEMICIRCLE...40 NM NE QUADRANT AND 130 NM SE QUADRANT.  SEAS 12
FT OR GREATER WITHIN 60 NM NE QUADRANT...330 NM SE
QUADRANT...270 NM SW QUADRANT...AND 90 NM NW QUADRANT WITH SEAS
TO 21 FT. ELSEWHERE WITHIN 16N95W TO 21N113W TO 13N114W TO
10N112W TO 08N102W TO 12N89W TO 16N95W...INCLUDING NEAR CABO
CORRIENTES AND THE GULF OF TEHUANTEPEC...WINDS 20 TO 33 KT. SEAS
11 TO 13 FT. REMAINDER OF AREA WITHIN 24N112W TO 26N114W TO
27N116W TO 23N115W TO 21N114W TO 22N112W TO 24N112W...INCLUDING
WITHIN 60 NM OF SHORE...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN
NW SWELL.
.24 HOUR FORECAST TROPICAL STORM JOHN INLAND NEAR 18.6N 103.5W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 10 NM NE QUADRANT...70 NM SE QUADRANT...30 NM SW
QUADRANT...AND 20 NM NW QUADRANT. SEAS 12 FT OR GREATER N OF 13N
BETWEEN 97W AND 108W. ELSEWHERE WITHIN 15N94W TO 20N106W TO
17N114W TO 13N117W TO 08N107W TO 08N100W TO 15N94W...INCLUDING
NEAR CABO CORRIENTES AND THE GULF OF TEHUANTEPEC...WINDS 20 TO
33 KT. SEAS 11 TO 13 FT. REMAINDER OF AREA WITHIN 29N114W TO
30N117W TO 24N119W TO 17N115W TO 17N110W TO 20N107W TO
29N114W...INCLUDING NEAR CABO CORRIENTES AND SEBASTIAN VIZCAINO
BAY AND WITHIN 60 NM OF SHORE...WINDS 20 KT OR LESS. SEAS 8 TO
10 FT IN NW SWELL.
.36 HOUR FORECAST TROPICAL DEPRESSION JOHN OVER WATER NEAR
19.2N 104.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW JOHN NEAR 19.8N
106.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN
20N107W TO 30N116W TO 24N119W TO 10N118W TO 07N108W TO 12N92W TO
20N107W...INCLUDING NEAR CABO CORRIENTES AND SEBASTIAN VIZCAINO
BAY AND WITHIN 60 NM OF SHORE AND THE GULF OF TEHUANTEPEC...
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW 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.

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

CONVECTION VALID AT 2150 UTC THU SEP 26...

.HURRICANE JOHN...NUMEROUS MODERATE TO STRONG FROM 15N TO 19N
BETWEEN 98W AND 106W. SCATTERED MODERATE ELSEWHERE FROM 09N TO
21N BETWEEN 97W AND 113W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS WEST OF HURRICANE JOHN NEAR 13N110W
TO 13N126W AND BEYOND 09N140W. SCATTERED MODERATE N OF 01N E OF
85W...AND FROM 08N TO 14N BETWEEN 117W AND 134W...AND FROM 07N
TO 11N W OF 134W.


.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.

$$