501
FZPN02 KWBC 251725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC WED SEP 25 2024

CCODE/2:31:12:01:00/AOW+POR/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 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 1200 UTC SEP 25.
24 HOUR FORECAST VALID 1200 UTC SEP 26.
48 HOUR FORECAST VALID 1200 UTC SEP 27.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 46N164W 999 MB MOVING E 35 KT. FROM 39N TO 49N BETWEEN 149W
AND 177W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 49N141W 985 MB. WITHIN 360 NM SW QUADRANT
WINDS 35 TO 50 KT. SEAS 9 TO 18 FT. ELSEWHERE FROM 39N TO 52N
BETWEEN 130W AND 156W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.30 HOUR FORECAST LOW 50N139W 978 MB. WITHIN 240 NM SW SEMICIRCLE
WINDS 50 TO 65 KT. SEAS 15 TO 25 FT. ELSEWHERE FROM 43N TO 53N
BETWEEN 127W AND 145W WINDS 35 TO 50 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW 52N132W 983 MB. WITHIN 300 NM S SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 15 TO 30 FT. ELSEWHERE FROM 45N TO 54N E
OF 140W WINDS 25 TO 40 KT. SEAS 8 TO 22 FT...HIGHEST S OF THE
LOW.

...GALE WARNING...
.LOW NW OF AREA 62N171E 1000 MB MOVING SE 10 KT. N OF 49N W OF
178E WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW NW OF AREA 58N178E 998 MB. WITHIN 300 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 16 FT. ELSEWHERE WITHIN
120 NM NE OF A LINE FROM 62N175W TO 60N170W WINDS 20 TO 30 KT.
SEAS TO 11 FT.
.48 HOUR FORECAST LOW 57N170W 999 MB. WITHIN 300 NM NW SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 10 TO 17 FT. ELSEWHERE N OF 45N BETWEEN
156W AND 178E WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.FROM 37N TO 40N W OF 165E WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST NEW LOW W OF AREA NEAR 38N152W FROM 37N TO 43N
W OF 173E WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N164E 1005 MB.
FROM 35N TO 44N W OF 39W WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.

.SYNOPSIS AND FORECAST.

.LOW 59N149W 992 MB MOVING SW 05 KT. WITHIN 600 NM S AND 420 NM
W
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NEAR 58N151W 994
MB SECOND CENTER NEAR 56N147W 996 MB. N OF 46N BETWEEN 147W AND
161W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST 59N144W 1001 MB. FROM 49N TO 59N BETWEEN 140W
AND 152W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

.48 HOUR FORECAST FROM 35N TO 40N E OF 126W WINDS TO 25 KT. SEAS
TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 45N
BETWEEN 154W AND 159W.
.24 HOUR FORECAST DENSE FOG FROM 48N TO 51N BETWEEN 133W AND
142W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.FORECASTER HYDE. 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 1200 UTC WED SEP 25.
24 HOUR FORECAST VALID 1200 UTC THU SEP 26.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 27.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOHN NEAR 16.2N 101.4W 1000 MB AT 1500 UTC SEP
25 MOVING E OR 080 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE...40 NM NE QUADRANT AND 70 NM SE QUADRANT. SEAS 12 FT
OR GREATER WITHIN 0 NM N SEMICIRCLE AND 210 NM S SEMICIRCLE WITH
SEAS TO 14 FT. ELSEWHERE WITHIN 16N99W TO 17N105W TO 13N106W TO
12N109W TO 10N107W TO 10N98W TO 16N99W WINDS 20 TO 33 KT. SEAS 11
TO 12 FT. REMAINDER OF AREA WITHIN 12N87W TO 15N95W TO 18N104W
TO 11N113W TO 09N98W TO 10N90W TO 12N87W...INCLUDING THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN W TO NW
SWELL.
.24 HOUR FORECAST TROPICAL STORM JOHN NEAR 16.7N 101.1W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NE QUADRANT...110 NM SE QUADRANT...100 NM SW
QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
240 NM IN E SEMICIRCLE...280 NM SW QUADRANT...AND 120 NM NW
QUADRANT WITH SEAS TO 17 FT. ELSEWHERE WITHIN 14N96W TO 17N106W
TO 13N107W TO 11N114W TO 10N108W TO 11N98W TO 14N96W WINDS 20 TO
33 KT. SEAS 11 TO 12 FT. REMAINDER OF AREA WITHIN 15N94W TO
19N104W TO 18N109W TO 11N115W TO 09N103W TO 12N89W TO
15N94W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN W TO NW
SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 17.8N 101.2W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER
WITHIN 270 NM S SEMICIRCLE WITH SEAS TO 19 FT. ELSEWHERE WITHIN
15N95W TO 18N102W TO 14N104W TO 10N111W TO 09N103W TO 11N98W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 TO 30 KT.
SEAS 11 TO 12 FT. REMAINDER OF AREA WITHIN 15N94W TO 20N108W TO
26N116W TO 14N112W TO 08N106W TO 10N97W TO 15N94W...INCLUDING
NEAR CABO CORRIENTES AND WITHIN 60 NM OF SHORE AND THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 11 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.

.06 HOUR FORECAST WITHIN 30N135W TO 30N140W TO 27N140W TO
29N137W TO 30N135W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW
SWELL.
.24 HOUR FORECAST WITHIN 28N129W TO 30N127W TO 30N136W TO
28N140W TO 22N140W TO 28N129W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN NW SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.30 HOUR FORECAST WITHIN 11N130W TO 12N131W TO 11N133W TO
10N133W TO 10N132W TO 11N130W WINDS 20 KT OR LESS. SEAS 8 FT IN
S SWELL.
.48 HOUR FORECAST WITHIN 13N128W TO 13N129W TO 12N130W TO
11N129W TO 11N127W TO 12N126W TO 13N128W WINDS 20 KT OR LESS.
SEAS 8 FT IN W SWELL.

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

CONVECTION VALID AT 1200 UTC WED SEP 25...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM 14N109W TO BEYOND 11N140W.
SCATTERED MODERATE LOCALLY STRONG FROM 08N TO 11N BETWEEN 132W
AND 140W. SCATTERED MODERATE FROM 11N TO 14N BETWEEN 110W AND
121W.

.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC SEP 25 2024.
24 HOUR FORECAST VALID 1200 UTC SEP 26 2024.
48 HOUR FORECAST VALID 1200 UTC SEP 27 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 12N151W 1010 MB MOVING W SLOWLY. WINDS 20 TO 25 KT FROM
12N TO 16N BETWEEN 153W AND 149W. SCATTERED MODERATE TSTMS FROM
11N TO 15N BETWEEN 155W AND 150W.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 05N162W 13N154W. WINDS
DECREASED TO 20 KT OR LESS.
.48 HOUR FORECAST TROUGH 05N166W 14N158W.

.LOW (L1) NEAR 09N177E 1010 MB MOVING W SLOWLY. SECOND LOW (L2)
NEAR 14N171W 1008 MB MOVING NW SLOWLY. TROUGH 06N170E TO L1 TO
11N173W TO L2 TO 15N165W MOVING NW SLOWLY. WINDS 20 TO 25 KT FROM
13N TO 16N BETWEEN 172W AND 166W. ISOLATED TO WIDELY SCATTERED
MODERATE TSTMS WITHIN 60 NM N AND 270 NM S OF TROUGH.
.24 HOUR FORECAST L1 NEAR 08N173E 1011 MB. L2 DISSIPATED. TROUGH
06N168E TO L1 TO 10N180W 20N168W. WINDS DECREASED TO 20 KT OR
LESS.
.48 HOUR FORECAST L1 DISSIPATED. TROUGH 04N164E 09N167E 12N179E
22N171W.

.TROUGH 10N160E 12N163E 17N164E MOVING W 10 KT. SCATTERED TSTMS
WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 8 TO 10 FT FROM 13N TO 19N BETWEEN 172W AND 167W. SEAS 8 TO
10 FT N OF LINE 30N179W 20N152W 28N140W.
.24 HOUR FORECAST SEAS DIMINISHED TO 8 FT OR LESS.

.SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA.

.MONSOON TROUGH 11N140W 12N145W 12N150W. SCATTERED MODERATE TSTMS
WITHIN 180 NM S AND 60 NM N OF MONSOON TROUGH.

.ISOLATED MODERATE TSTMS S OF 05N W OF 163E...FROM 03N TO 08N
BETWEEN 167E AND 170E...N OF 21N W OF 168E...AND FROM 20N TO 27N
BETWEEN 173W AND 165W.

$$

.FORECASTER JELSEMA. HONOLULU HI.