826
FZPN01 KWBC 260944
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 26.
24 HOUR FORECAST VALID 0600 UTC SEP 27.
48 HOUR FORECAST VALID 0600 UTC SEP 28.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 48N146W 983 MB MOVING NE 30 KT. FROM 43N TO 49N BETWEEN 146W
AND 153W WINDS 40 TO 55 KT. SEAS 12 TO 20 FT. ELSEWHERE FROM 38N
TO 50N BETWEEN 136W AND 161W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.12 HOUR FORECAST LOW 50N138W 973 MB. WITHIN 180 NM W AND SW
QUADRANTS WINDS 50 TO 65 KT. SEAS 16 TO 28 FT.
.24 HOUR FORECAST LOW 53N131W 983 MB. WITHIN 180 NM OF LOW EXCEPT
240 NM S QUADRANT WINDS 40 TO 55 KT. SEAS 15 TO 30 FT. ELSEWHERE
FROM 45N TO 56N E OF 140W WINDS 25 TO 40 KT. SEAS 8 TO 20
FT...HIGHEST SW OF THE LOW.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.

...STORM WARNING...
.LOW W OF AREA 37N148E 1008 MB MOVING NE 30 KT. FROM 35N TO 41N
BETWEEN 174E AND 160E WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 40N160E 1003 MB. WITHIN 180 NM N AND NE
QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 18 FT. ELSEWHERE FROM 33N
TO 44N BETWEEN 177E AND 160E WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 40N177E 1004 MB.
FROM 37N TO 41N BETWEEN 170W AND 175E WINDS 35 TO 50 KT. SEAS 11
TO 22 FT. ELSEWHERE FROM 32N TO 43N BETWEEN 167W AND 161E WINDS
25 TO 40 KT. SEAS 8 TO 16 FT.

...GALE WARNING...
.LOW NW OF AREA 60N177E 994 MB MOVING SE 20 KT. WITHIN 360 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 15 FT. ELSEWHERE N OF 48N
W OF 170W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 56N173W 998 MB. WITHIN 360 NM SW AND N
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE N OF 46N
BETWEEN 160W AND 174E WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 55N160W 1001 MB. WITHIN 360 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE N OF 45N BETWEEN
150W AND 172W WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW 58N148W 988 MB MOVING SE 10 KT. N OF 50N WITHIN 600 NM SW
QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 56N146W 1002 MB. WITHIN 360 NM SW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW DISSIPATED. N OF 53N E OF 141W WINDS TO 25
KT. SEAS TO 9 FT.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST FROM 34N TO 41N BETWEEN 128W AND 122W WINDS TO
25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 32N TO 47N BETWEEN 123W AND 130W WINDS 20
TO 30 KT. SEAS 8 TO 15 FT WITH NW SWELL.

.48 HOUR FORECAST LOW 59N178W 1008 MB. WITHIN 300 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT.

.RESUSPENDED ASH IS OCCURRING FROM SHEVELUCH 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.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 51N
BETWEEN 136W AND 148W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM EITHER SIDE OF A LINE
FROM 61N166W TO 58N178W.
.48 HOUR FORECAST DENSE FOG FROM 58N TO 62N E OF 170W AND FROM
36N TO 41N BETWEEN 166W AND 172W.

.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 0600 UTC THU SEP 26.
24 HOUR FORECAST VALID 0600 UTC FRI SEP 27.
48 HOUR FORECAST VALID 0600 UTC SAT SEP 28.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM JOHN NEAR 17.1N 102.5W 982 MB AT 0900 UTC SEP 26
MOVING WNW OR 285 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE
QUADRANT...120 NM SE QUADRANT...60 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM NE QUADRANT...330 NM
SE QUADRANT...240 NM SW QUADRANT...AND 30 NM NW QUADRANT WITH
SEAS TO 19 FT. ELSEWHERE WITHIN 16N98W TO 19N104W TO 14N109W TO
12N113W TO 10N109W TO 11N101W TO 16N98W WINDS 20 TO 33 KT. SEAS 8
TO 12 FT. REMAINDER OF AREA WITHIN 20N105W TO 27N116W TO 20N112W
TO 11N116W TO 08N107W TO 11N87W TO 20N105W...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 17.2N 102.6W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.24 HOUR FORECAST HURRICANE JOHN NEAR 17.8N 103.0W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 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...380
NM SE QUADRANT...105 NM NW QUADRANT...AND 60 NM NE QUADRANT WITH
SEAS TO 24 FT. ELSEWHERE WITHIN 17N99W TO 19N104W TO 11N112W TO
10N103W TO 13N99W TO 17N99W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA WITHIN 17N107W TO 19N105W TO 30N115W TO 10N116W
TO 08N103W TO 13N90W TO 17N107W...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.
.36 HOUR FORECAST TROPICAL STORM JOHN NEAR 18.8N 103.6W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT.
.48 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 19.7N 104.7W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER
WITHIN 400 NM IN SE QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN
13N98W TO 14N100W TO 14N103W TO 12N104W TO 11N102W TO 11N99W TO
13N98W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA
WITHIN 15N93W TO 20N107W TO 27N114W TO 22N119W TO 10N116W TO
09N96W TO 15N93W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 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 21N140W TO 30N128W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.06 HOUR FORECAST WITHIN 12N127W TO 12N131W TO 10N130W TO
10N128W TO 11N127W TO 12N127W WINDS 20 KT OR LESS. SEAS 8 FT IN
S TO SW SWELL.
.24 HOUR FORECAST WITHIN 13N125W TO 13N129W TO 12N131W TO
11N131W TO 11N129W TO 12N125W TO 13N125W WINDS 20 KT OR LESS.
SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 12N125W TO 13N126W TO 12N127W TO
11N127W TO 11N125W TO 12N125W 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 0900 UTC THU SEP 26...

.TROPICAL STORM JOHN...NUMEROUS MODERATE TO STRONG FROM 12N TO
19N BETWEEN 98W AND 108W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 13N110W TO 12N127W TO BEYOND
10N140W. SCATTERED MODERATE FROM 08N TO 14N BETWEEN 110W AND
140W.


.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.

$$