843
FZPN01 KWBC 241617
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC TUE SEP 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 24.
24 HOUR FORECAST VALID 1200 UTC SEP 25.
48 HOUR FORECAST VALID 1200 UTC SEP 26.

.WARNINGS.

...STORM WARNING...
.LOW 46N176E 1003 MB MOVING E 40 KT. FROM 41N TO 48N W OF 169W
TO 168E WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 47N163W 996 MB. FROM 41N TO 48N BETWEEN
155W AND 173W WINDS 25 TO 40 KT. SEAS 8 TO 17 FT. ELSEWHERE FROM
38N TO 49N BETWEEN 150W AND 178W WINDS LESS THAN 25 KT. SEAS TO
11 FT.
.36 HOUR FORECAST LOW 48N152W 987 MB RAPIDLY INTENSFYING. FROM
42N TO 48N BETWEEN 154W AND 159W WINDS 40 TO 55 KT. SEAS 12 TO
20 FT.
.48 HOUR FORECAST LOW 50N143W 976 MB. FROM 44N TO 51N BETWEEN
141W AND 145W WINDS 45 TO 60 KT. SEAS 15 TO 24 FT. ELSEWHERE
FROM 42N TO 52N BETWEEN 130W AND 150W WINDS 30 TO 45 KT. SEAS 10
TO 20 FT. ALSO FROM 38N TO 53N BETWEEN 128W AND 155W WINDS TO 25
KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW NW OF AREA 62N171E 1000 MB. N OF 54N W OF
179E W TO SW WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW NW OF AREA 59N178E 998 MB. WITHIN 360 NM
SW QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE N OF
49N W OF 169W WINDS TO 25 KT. SEAS TO 11 FT.

.SYNOPSIS AND FORECAST.

.FROM 35N TO 44N BETWEEN 123W AND 132W AREA OF N WINDS TO 25 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 59N147W 984 MB MOVING W 15 KT. WITHIN 420 NM SE...900 NM
SW...AND 780 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 18 FT.
.24 HOUR FORECAST LOW 59N149W 990 MB. WITHIN 360 NM SW OF A LINE
FROM 60N154W TO 54N136W WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 58N150W 993 MB. EXCEPT WHERE DESCRIBED IN
STORM WARNING...N OF 48N BETWEEN 150W AND 161W WINDS 20 TO 30
KT. SEAS TO 12 FT.

.24 HOUR FORECAST FROM 36N TO 41N W OF 171E AREA OF NE TO E
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 36N TO 44N W OF 178W AREA OF E WINDS 20
TO 30 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 47N
BETWEEN 170W AND 172E AND N OF 51N E OF 132W.
.24 HOUR FORECAST DENSE FOG FROM 48N TO 51N E OF 128W.
.48 HOUR FORECAST CONDITIONS IMPROVING.

.FORECASTER KREKELER. 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 TUE SEP 24.
24 HOUR FORECAST VALID 1200 UTC WED SEP 25.
48 HOUR FORECAST VALID 1200 UTC THU SEP 26.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOHN NEAR 17.7N 100.5W 1001 MB AT 1500 UTC SEP
24 MOVING NW OR 310 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM N SEMICIRCLE
AND 70 NM S SEMICIRCLE. ELSEWHERE WITHIN 15N99W TO 14N104W TO
12N108W TO 10N104W TO 11N97W TO 15N99W WINDS 20 TO 33 KT. SEAS
10 TO 13 FT. REMAINDER OF AREA WITHIN 12N91W TO 17N101W TO
12N113W TO 10N103W TO 11N100W TO 08N97W TO 12N91W WINDS 20 KT OR
LESS. SEAS 9 TO 11 FT IN W SWELL.
.12 HOUR FORECAST TROPICAL DEPRESSION JOHN INLAND NEAR 17.7N
101.1W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST TROPICAL DEPRESSION JOHN OVER WATER NEAR 17.3N
101.1W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. ELSEWHERE
WITHIN 14N96W TO 18N102W TO 15N102W TO 11N106W TO 10N103W TO
10N99W TO 14N96W WINDS 20 TO 30 KT. SEAS 11 TO 14 FT. REMAINDER
OF AREA WITHIN 12N88W TO 15N94W TO 17N105W TO 10N110W TO 08N96W
TO 12N88W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN W SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION JOHN INLAND NEAR 17.4N
100.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. ELSEWHERE
WITHIN 15N99W TO 16N102W TO 12N105W TO 10N103W TO 11N100W TO
13N97W TO 15N99W WINDS 20 TO 25 KT. SEAS 11 TO 14 FT. REMAINDER
OF AREA WITHIN 12N91W TO 16N93W TO 18N103W TO 12N115W TO 08N105W
TO 09N97W TO 12N91W...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.

.SYNOPSIS AND FORECAST.

.30 HOUR FORECAST WITHIN 30N134W TO 30N140W TO 27N140W TO
28N138W TO 30N134W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N127W TO 30N137W TO 27N140W TO
22N140W TO 22N138W TO 30N127W 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 1200 UTC TUE SEP 24...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH AXIS EXTENDS FROM 14N108W TO 14N121W TO
12N140W. SCATTERED MODERATE LOCALLY STRONG FROM 08N TO 11N WEST
OF 136W. SCATTERED MODERATE WITHIN 120 NM SOUTH OF THE TROUGH
BETWEEN 112W AND 133W.

$$
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.