439
FZPN40 PHFO 221520
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 22 2024.
24 HOUR FORECAST VALID 1200 UTC SEP 23 2024.
48 HOUR FORECAST VALID 1200 UTC SEP 24 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 11N141W 1008 MB MOVING W SLOWLY. WINDS 20 TO 25 KT FROM
09N TO 15N E OF 142W. SEAS 8 TO 9 FT FROM 09N TO 15N E OF 143W.
SCATTERED MODERATE TSTMS WITHIN 150 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 11N144W 1008 MB. WINDS 20 TO 25 KT
FROM 12N TO 16N BETWEEN 145W AND 141W. SEAS 8 TO 10 FT FROM 12N TO
16N BETWEEN 147W AND 141W.
.48 HOUR FORECAST LOW NEAR 12N147W 1007 MB. WINDS 20 TO 30 KT
FROM 12N TO 19N FROM 149W TO 143W. SEAS 8 TO 10 FT FROM 14N TO 18N
BETWEEN 150W TO 144W.

.LOW NEAR 08N162W 1008 MB MOVING NW SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 10N166W 1008 MB.
.48 HOUR FORECAST LOW NEAR 12N165W 1005 MB. WINDS 20 TO 25 KT IN AREA
BOUNDED BY 14N165W 16N166W 15N163W 09N165W 07N171W 08N171W 13N164W
14N165W.

.TROUGH 30N175E 22N175E MOVING W SLOWLY. SCATTERED TO NUMEROUS
MODERATE TSTMS WITHIN 180 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 20N178E 13N172E 10N161E MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 180 NM N OF TROUGH...AND 60 NM S OF TROUGH.
.24 HOUR FORECAST TROUGH 16N170E 10N166E 01N161E.
.48 HOUR FORECAST TROUGH 13N163E 02N162E.

.24 HOUR FORECAST WINDS FROM 20 TO 25 KT FROM 17N TO 27N BETWEEN
176E AND 170W.
.48 HOUR FORECAST WINDS FROM 20 TO 25 KT FROM 18N
TO 28N BETWEEN 177E AND 168W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.24 HOUR FORECAST SEAS 8 TO 9 FT N OF 27N BETWEEN 168E AND 176W.
.48 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 30N173W 26N178E
20N178E 17N177W 20N172W 22N171W 30N156W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.MONSOON TROUGH 11N140W 10N150W 10N160W 06N167W. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF MONSOON TROUGH.


$$

.FORECASTER PIERCE. HONOLULU HI.