291
FZPN01 KWBC 232217
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON SEP 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 23.
24 HOUR FORECAST VALID 1800 UTC SEP 24.
48 HOUR FORECAST VALID 1800 UTC SEP 25.

.WARNINGS.

...GALE WARNING...
.LOW 58N150W 972 MB MOVING NE 05 KT. BETWEEN 180 NM AND 420 NM S
QUADRANT WINDS 35 TO 45 KT. SEAS 15 TO 23 FT. ELSEWHERE N OF A
LINE FROM 50N128W TO 39N153W TO 44N171W WINDS 25 TO 35 KT. SEAS
9 TO 18 FT.
.24 HOUR FORECAST LOW 59N146W 987 MB. WITHIN 120 NM E AND 600 NM
SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT. ELSEWHERE N OF
A LINE FROM 50N128W TO 38N145W TO 59N170W WINDS TO 25 KT. SEAS 8
TO 16 FT.
.48 HOUR FORECAST LOW 58N148W 991 MB. WITHIN 540 NM W...420 NM
S...AND 240 NM NE QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.LOW 44N166E 1003 MB MOVING NE 30 KT. FROM 35N TO 47N W OF 179W
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 46N178W 1002 MB. FROM 37N TO 49N BETWEEN
163W AND 167E WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 47N155W 994 MB. FROM 41N TO 48N BETWEEN
147W AND 165W WINDS 35 TO 45 KT. SEAS 11 TO 18 FT. ELSEWHERE
FROM 39N TO 51N BETWEEN 144W AND 173W 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 SE OF A LINE FROM 46N124W TO
35N134W WINDS LESS THAN 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 30N TO 43N BETWEEN 124W AND 137W WINDS
LESS THAN 25 KT. SEAS TO 9 FT.

.24 HOUR FORECAST FROM 35N TO 41N W OF 167E AREA OF NE WINDS TO
25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 35N TO 41N W OF 174E AREA OF NE TO E
WINDS 20 TO 30 KT. SEAS TO 11 FT.

.48 HOUR FORECAST LOW NW OF AREA 61N173E 999 MB. W AND N OF A
LINE FROM 48N173E TO 54N177W WINDS 20 TO 30 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 45N W
OF 177E...AND N OF 48N E OF 127W.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 47N BETWEEN 165W AND
177E...AND N OF 47N E OF 127W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 48N BETWEEN 150W AND
157W.

.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 1800 UTC MON SEP 23.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 24.
48 HOUR FORECAST VALID 1800 UTC WED SEP 25.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE JOHN NEAR 15.5N 98.5W 973 MB AT 2100 UTC SEP 23
MOVING N OR 00 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 85 KT GUSTS
105 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM OF CENTER EXCEPT
30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM N
SEMICIRCLE AND 75 NM S SEMICIRCLE WITH SEAS TO 16 FT. ELSEWHERE
WITHIN 12N96W TO 16N99W TO 13N104W TO 12N110W TO 10N102W TO
11N97W TO 12N96W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF
AREA WITHIN 12N95W TO 16N100W TO 13N102W TO 14N106W TO 12N110W
TO 08N96W TO 12N95W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN
MIXED
SWELL.
.24 HOUR FORECAST HURRICANE JOHN INLAND NEAR 16.5N 98.3W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM N SEMICIRCLE...60 NM SE QUADRANT AND 80 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM OF CENTER WITH PEAK
SEAS NEAR 21 FT. ELSEWHERE WITHIN 14N96W TO 17N99W TO 14N101W TO
12N108W TO 09N106W TO 12N96W TO 14N96W WINDS 20 TO 33 KT. SEAS
10 TO 12 FT. REMAINDER OF AREA WITHIN 13N91W TO 17N101W TO
11N112W TO 08N104W TO 07N92W TO 13N91W...INCLUDING THE GULF OF
TEHUANTEPEC...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN W TO SW
SWELL.
.36 HOUR FORECAST POST-TROPICAL JOHN NEAR 16.7N 98.4W. MAXIMUM
SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST WITHIN 15N95W TO 14N102W TO 11N108W TO 10N106W
TO 10N99W TO 12N94W TO 15N95W...INCLUDING THE GULF OF
TEHUANTEPEC...WINDS 20 TO 30 KT. SEAS 11 TO 14 FT. ELSEWHERE
WITHIN 16N94W TO 17N105W TO 10N111W TO 08N103W TO 08N93W TO
12N88W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20
KT OR LESS. SEAS 9 TO 11 FT IN W TO NW SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

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

CONVECTION VALID AT 1800 UTC MON SEP 23...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH AXIS EXTENDS FROM 1007 MB LOW PRES NEAR 16N107W
TO 13N115W TO 12N140W. SCATTERED MODERATE FROM 08N TO 12N
BETWEEN 124W AND 137W.

$$
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.