316
FZPN40 PHFO 200949
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SUN SEP 20 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W

SYNOPSIS VALID 0600 UTC SEP 20 2026.
24 HOUR FORECAST VALID 0600 UTC SEP 21 2026.
48 HOUR FORECAST VALID 0600 UTC SEP 22 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 15N142W 1007 MB MOVING W 10 KT. ISOLATED MODERATE TSTMS W OF
LOW WITHIN 50 NM OF 15N145W.
.24 HOUR FORECAST LOW 13N145W 1007 MB.
.48 HOUR FORECAST LOW 12N150W 1007 MB.

.LOW 12N160W 1010 MB NEARLY STATIONARY.
.24 HOUR FORECAST LOW 12N158W 1010 MB.
.48 HOUR FORECAST LOW ABSORBED BY MONSOON TROUGH.

.TROUGH 16N173W TO 21N173W TO 25N170W MOVING WNW 10 KT.
.24 HOUR FORECAST TROUGH 17N179W TO 22N178W TO 27N178W.
.48 HOUR FORECAST TROUGH 27N180W TO 30N172W.

.WINDS 20 TO 25 KT FROM 17N TO 24N BETWEEN 141W AND 149W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 21N E OF 157W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 16N TO 24N E OF 152W.

.SEAS 2.5 TO 3 M FROM 14N TO 23N BETWEEN 141W AND 163W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 14N TO 23N E OF 163W.
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M FROM 14N TO 25N E OF 160W.

.WINDS 20 KT OR LESS AND SEAS BELOW 2.5 M OVER THE REMAINDER OF
FORECAST AREA.

.MONSOON TROUGH 14N140W TO FIRST LOW MENTIONED ABOVE TO 13N150W
TO SECOND LOW DESCRIBED ABOVE TO 05N171W TO 08N180W. SCATTERED
MODERATE TO ISOLATED STRONG TSTMS WITHIN 100 NM OF TROUGH BETWEEN
151W AND 170W...AND S OF TROUGH FROM 00N TO 04N BETWEEN 166W AND
171W.

$$

.FORECASTER CHAN. HONOLULU HI.