743
FZPN40 PHFO 192248
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU SEP 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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

SYNOPSIS VALID 1800 UTC SEP 19 2024.
24 HOUR FORECAST VALID 1800 UTC SEP 20 2024.
48 HOUR FORECAST VALID 1800 UTC SEP 21 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N171W 26N172W MOVING W SLOWLY. WINDS 20 TO 25 KT N OF
27N BETWEEN 171W AND 163W. ISOLATED MODERATE TSTMS N OF 26N
BETWEEN 170W AND 163W.
.24 HOUR FORECAST TROUGH 30N175W 25N176W.
.48 HOUR FORECAST TROUGH 30N179E 25N176E.

.TROUGH 21N174W 17N179E MOVING W SLOWLY. ISOLATED MODERATE TSTMS
FROM 22N TO 18N BETWEEN 173W AND 169W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH 17N175W 13N179E 11N177E.
.48 HOUR FORECAST NEW LOW NEAR 13N177E 1009 MB. TROUGHS FROM
19N178E TO LOW AND FROM LOW TO 11N175E.

.24 HOUR FORECAST NEW TROUGH 30N147W 26N141W.
.48 HOUR FORECAST TROUGH 30N153W 25N150W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ 08N140W 09N148W 06N155W...AND 14N162W 14N170W 08N173E 09N167E.
ISOLATED MODERATE TO STRONG TSTMS WITHIN 240 NM OF ITCZ.

.OTHERWISE ISOLATED MODERATE TSTMS FROM 14N TO 11N BETWEEN 161E AND
167E...AND FROM 05N TO 02N W OF 162E.

$$

.FORECASTER TROTTER. HONOLULU HI.