023
FZPS40 PHFO 202240
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC FRI SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

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 OFFSHORE AND HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP


SECURITE

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1800 UTC SEP 20 2024.
24 HOUR FORECAST VALID 1800 UTC SEP 21 2024.
48 HOUR FORECAST VALID 1800 UTC SEP 22 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 25S141W 22S146W MOVING E 15 KT.
.24 HOUR FORECAST FRONT 25S132W 21S134W.
.48 HOUR FORECAST FRONT 25S128W 22S132W.

.TROUGH 11S154W 09S157W 05S175W MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF TROUGH W OF 162W.
.24 HOUR FORECAST TROUGH 11S161W 10S171W 06S179W.
.48 HOUR FORECAST TROUGH 08S165W 08S177W 06S167E 05S160E.

.TROUGH 09S176E 06S170E 04S167E NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 09S TO 06S BETWEEN 161E AND 173E.
.24 HOUR FORECAST TROUGH 10S174E 07S167E 05S164E.
.48 HOUR FORECAST TROUGH MERGES WITH TROUGH LISTED IMMEDIATELY
ABOVE.

.WINDS 20 TO 25 KT FROM 21S TO 16S BETWEEN 172W
AND 161W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 21S TO 16S BETWEEN
163W AND 151W.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 9 FT S OF LINE 25S153W 16S160W 10S170E 15S172E
25S169W.
.24 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.OTHERWISE ISOLATED MODERATE TSTMS S OF 22S E OF 125W...AND
FROM 12S TO 10S BETWEEN 179E AND 176W.

$$

.FORECASTER TROTTER. HONOLULU HI.