FZPN40 PHFO 162207
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC FRI OCT 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC OCT 16 2026.
24 HOUR FORECAST VALID 1800 UTC OCT 17 2026.
48 HOUR FORECAST VALID 1800 UTC OCT 18 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 05N173W 1007 MB MOVING W SLOWLY. TROUGH FROM 10N163W TO
08N170W TO LOW TO 02N180W MOVING W SLOWLY. WINDS 20 TO 30 KT FROM
11N TO 09N BETWEEN 177W AND 169W. SCATTERED MODERATE TO STRONG 
TSTMS FROM 12N TO 03N W OF 166W. 
.24 HOUR FORECAST LOW NEAR 04N179W. TROUGH FROM 07N167W TO 
08N174W TO LOW TO 04N180W. WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST LOW MOVED JUST W OF AREA. TROUGH FROM 07N180W 
TO 05N171W.

.FRONT 30N149W 28N151W THENCE TROUGH 24N158W. FRONT NEARLY 
STATIONARY AND TROUGH MOVING W SLOWLY. WINDS 20 TO 25 KT WITHIN 
150 NM OF FRONT AND TROUGH.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH. TROUGH 30N152W 
26N159W. WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST TROUGH 30N157W 26N166W.

.TROUGH 30N175W 27N176W 22N176W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH 21N141W 15N141W MOVING W 10 KT. 
.24 HOUR FORECAST TROUGH 21N148W 17N145W 14N144W.
.48 HOUR FORECAST TROUGH 19N150W 16N149W 12N147W.

.TROUGH 09N145W 06N148W 03N149W MOVING W SLOWLY. ISOLATED 
MODERATE TSTMS WITHIN 240 NM W OF TROUGH. 
.24 HOUR FORECAST TROUGH 07N151W 03N150W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 TO 25 KT FROM 24N TO 16N BETWEEN 164W AND 153W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 24N TO 11N BETWEEN 177W 
AND 153W.
.48 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 27N155W 
20N175W 15N180W 11N173W 19N147W 27N155W.

.SEAS 2.5 TO 3 M N OF LINE 30N145W 24N158W 27N172W 30N157W...AND 
IN AREA BOUNDED BY 21N151W 17N154W 15N171W 10N171W 16N145W 
21N151W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N161W 23N167W 
23N176W 12N174W 15N150W 20N140W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N160W 23N180W 
14N180W 13N155W 20N140W.

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

.ITCZ 05N151W 08N156W. ISOLATED MODERATE TSTMS WITHIN 210 NM OF 
ITCZ.

.ISOLATED MODERATE TSTMS S OF 03N BETWEEN 154W AND 150W.

$$

.FORECASTER TROTTER. HONOLULU HI.