321
FZPN02 KWBC 231725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC MON SEP 23 2024

CCODE/2:31:12:11:00/AOW+POR+AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 23.
24 HOUR FORECAST VALID 1200 UTC SEP 24.
48 HOUR FORECAST VALID 1200 UTC SEP 25.

.WARNINGS.

...GALE WARNING...
.LOW 58N151W 971 MB MOVING NE 10 KT. WITHIN 240 NM NE
SEMICIRCLE...AND BETWEEN 180 NM AND 600 NM S SEMICIRCLE WINDS 35
TO 45 KT. SEAS 12 TO 24 FT...HIGHEST NEAR 51N151W. ELSEWHERE N
OF A LINE FROM 50N128W TO 38N159W TO 42N172W WINDS 25 TO 35 KT.
SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 59N146W 985 MB. WITHIN 420 NM SE...780 NM
SW AND NW...AND 180 NM NE QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO
19 FT...HIGHEST NEAR 56N139W. ALSO WITHIN 180 NM SE OF A FRONT
FROM 52N129W TO 50N149W WINDS TO 25 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW 59N149W 991 MB. WITHIN 600 NM NE OF A LINE
FROM 59N168W TO 38N132W. WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.LOW 43N161E 1004 MB MOVING NE 30 KT. FROM 35N TO 46N W OF 176E
WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 46N177E 1001 MB. FROM 38N TO 49N BETWEEN
168W AND 165E WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 47N163W 994 MB. WITHIN 360 NM SW QUADRANT
WINDS 35 TO 45 KT. SEAS 11 TO 18 FT. ELSEWHERE FROM 38N TO 51N
BETWEEN 150W AND 178W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 44N BETWEEN 124W AND 131W AREA OF N WINDS 20 TO 30
KT. SEAS TO 10 FT.
.24 HOUR FORECAST WITHIN 300 NM S OF A LINE FROM 46N124W TO
39N132W AREA OF N WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 30N TO 37N E OF 133W WINDS LESS THAN 25
KT. SEAS TO 8 FT.

.48 HOUR FORECAST FROM 35N TO 40N W OF 173E WINDS 20 TO 30 KT.
SEAS TO 10 FT.

.48 HOUR FORECAST LOW NW OF AREA 60N169E 1003 MB. W AND N OF A
LINE FROM 48N170E TO 55N180W WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 45N W
OF 173E...AND N OF 45N E OF 128W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 47N BETWEEN 171W AND
173E...AND N OF 38N E OF 126W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 47N BETWEEN 153W AND
163W.

.FORECASTER KELLS. OCEAN PREDICTION CENTER.

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 MON SEP 23.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 24.
48 HOUR FORECAST VALID 1200 UTC WED SEP 25.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM JOHN NEAR 14.8N 98.5W 992 MB AT 1500 UTC SEP 23
MOVING N OR 00 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS
75 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER EXCEPT
40 NM NE QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM N
SEMICIRCLE AND 75 NM S SEMICIRCLE WITH SEAS TO 15 FT. ELSEWHERE
WITHIN 15N97W TO 30N128W TO 30N131W TO 11N102W TO 10N98W TO
12N97W TO 15N97W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF
AREA WITHIN 13N96W TO 16N98W TO 13N103W TO 14N105W TO 12N111W TO
08N97W TO 13N96W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED
SWELL.
.12 HOUR FORECAST HURRICANE JOHN NEAR 15.2N 98.3W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.24 HOUR FORECAST HURRICANE JOHN NEAR 15.7N 97.9W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM S SEMICIRCLE...50 NM NE QUADRANT AND 40 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM OF CENTER WITH SEAS
TO 18 FT. ELSEWHERE WITHIN 16N97W TO 14N100W TO 12N108W TO
11N109W TO 10N99W TO 11N96W TO 16N97W WINDS 20 TO 33 KT. SEAS 9
TO 12 FT. REMAINDER OF AREA WITHIN 12N94W TO 16N97W TO 15N101W TO
12N111W TO 09N103W TO 08N94W TO 12N94W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM JOHN INLAND NEAR 16.2N 97.4W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 0 NM N SEMICIRCLE...40 NM SE QUADRANT AND 30 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM S OF CENTER WITH
PEAK SEAS TO 14 FT. ELSEWHERE WITHIN 15N95W TO 16N99W TO 13N100W
TO 12N110W TO 09N100W TO 11N95W TO 15N95W WINDS 20 TO 33 KT. SEAS
9 TO 12 FT. REMAINDER OF AREA WITHIN 13N89W TO 16N94W TO 17N106W
TO 11N112W TO 08N103W TO 08N92W TO 13N89W...INCLUDING THE GULF
OF TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 10 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 30N127W TO 30N131W TO 29N131W TO 29N129W TO 30N127W
WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NW SWELL.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.WITHIN 12N121W TO 12N124W TO 11N125W TO 10N125W TO 10N121W TO
12N121W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 13N116W TO 13N119W TO 12N122W TO
11N120W TO 11N117W TO 12N115W TO 13N116W WINDS 20 KT OR LESS.
SEAS 8 FT IN S TO SW SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

CONVECTION VALID AT 1200 UTC MON SEP 23...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH AXIS EXTENDS FROM 15N111W TO 12N140W. SCATTERED
MODERATE FROM 08N TO 11N BETWEEN 127W AND 136W.

$$
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1200 UTC SEP 23 2024.
24 HOUR FORECAST VALID 1200 UTC SEP 24 2024.
48 HOUR FORECAST VALID 1200 UTC SEP 25 2024.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 11N143W 1009 MB. TROUGH 13N140W TO LOW TO 09N150W.
TROUGH AND LOW MOVING W 10 KT. WINDS 20 TO 25 KT WITHIN 180 NM N
OF LOW AND TROUGH E OF 147W. SCATTERED MODERATE TSTMS WITHIN 240
NM OF TROUGH AND LOW.
.24 HOUR FORECAST LOW NEAR 11N147W 1010 MB. TROUGH 13N144W TO LOW
TO 08N151W. WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 12N TO 16N
BETWEEN 142W AND 148W.
.48 HOUR FORECAST LOW NEAR 11N150W 1011 MB. TROUGH 13N145W TO LOW
TO 07N154W. WINDS EASED TO 20 KT OR LESS AND SEAS SUBSIDED TO 8
FT OR LOWER.

.LOW NEAR 10N168W 1009 MB. TROUGH 12N163W TO LOW TO 08N174W.
TROUGH AND LOW MOVING N SLOWLY. SCATTERED MODERATE TSTMS WITHIN
240 NM OF LOW AND TROUGH.
.24 HOUR FORECAST LOW NEAR 12N168W 1008 MB. TROUGH 15N163W TO LOW
TO 09N180W. WINDS 20 TO 30 KT WITHIN 180 NM OF LOW AND TROUGH.
.48 HOUR FORECAST LOW NEAR 14N168W 1009 MB. TROUGH 17N166W TO LOW
TO 09N171E. WINDS 20 TO 25 KT AND SEAS 8 TO 10 FT FROM 13N TO 21N
BETWEEN 161W AND 170W.

.TROUGH 20N170E 10N167E 06N166E MOVING W SLOWLY. ISOLATED MODERATE
TSTMS FROM 14N TO 20N BETWEEN 175E AND 160E.
.24 HOUR FORECAST WEAK TROUGH 17N166E 05N163E.
.48 HOUR FORECAST TROUGH 17N162E 08N161W.

.TROUGH 28N166E 22N166E MOVING W 10 KT. SCATTERED MODERATE TSTMS
N OF 22N BETWEEN 175E AND TROUGH.
.24 HOUR FORECAST TROUGH 29N160E 25N160E.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.

.WEAK TROUGH 30N157W 27N158W 25N157W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS FROM 22N TO 26N BETWEEN 156W AND 161W.
.24 HOUR FORECAST WEAK TROUGH 29N160W 25N162W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.OTHERWISE WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 9 FT N OF 28N BETWEEN 180W AND 172E.
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 30N154W 24N163W
23N172W. SEAS 8 TO 9 FT FORM 20N TO 27N BETWEEN 172W AND 178E.
.48 HOUR FORECAST SEAS 8 TO 9 FT N OF 26N BETWEEN 141W AND 152W.

.OTHERWISE SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ 08N151W 10N161W ISOLATED MODERATE TSTMS WITHIN 120 NM OF
ITCZ.

.ISOLATED MODERATE TSTMS S OF 05N W OF 168E.

$$

.FORECASTER ALMANZA. HONOLULU HI.