937
FZPN40 PHFO 191526
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 19 2024.
24 HOUR FORECAST VALID 1200 UTC SEP 20 2024.
48 HOUR FORECAST VALID 1200 UTC SEP 21 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST NEW TROUGH FROM 09N170E TO 11N177E TO 15N177W
TO 18N172W. WINDS E TO S 20 TO 25 KT WITHIN 150 NM SE AND S OF
TROUGH AXIS W OF 177W.
.48 HOUR FORECAST NEW LOW NEAR 15N179E 1012 MB. TROUGHS FROM LOW
TO 18N172W AND FROM LOW TO 13N172E TO 09N165E. WINDS 20 TO 25 KT
WITHIN 240 NM OF LOW NE SEMICIRCLE.

.TROUGH FROM 15N178E TO 19N177W TO 21N172W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH FROM 26N140W TO 30N146W.
.48 HOUR FORECAST TROUGH FROM 24N145W TO 30N150W.

.OTHERWISE WINDS E TO NE 20 TO 25 KT FROM 17N TO 09N BETWEEN 165E
AND 175E AND ALSO FROM 30N TO 24N BETWEEN 171W AND 159W.
ADDITIONALLY WINDS NE TO S 20 TO 25 KT FROM 16N TO 02N BETWEEN
172W AND 164W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS...EXCEPT HIGHER
WHERE NOTED ABOVE.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.OTHERWISE SEAS 8 TO 9 FT FROM 16N TO 04N BETWEEN 174W AND 164W.
.24 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER EXCEPT GREATER
WHERE NOTED ABOVE.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.MONSOON TROUGH FROM 11N140W TO 11N146W TO 08N153W. ISOLATED
MODERATE TSTMS WITHIN 240 NM EITHER SIDE OF TROUGH AXIS.

.ITCZ FROM 11N160W TO 12N168W TO 07N178W TO 08N168E. ISOLATED
MODERATE TO STRONG TSTMS WITHIN 360 NM EITHER SIDE OF CONVERGENCE
LINE.

.OTHERWISE SCATTERED MODERATE TSTMS FROM 30N TO 26N BETWEEN 172W AND
166W.


$$

.FORECASTER BEDAL. HONOLULU HI.