FZPN40 PHFO 150322
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC THU OCT 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 15 2026.
24 HOUR FORECAST VALID 0000 UTC OCT 16 2026.
48 HOUR FORECAST VALID 0000 UTC OCT 17 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N153W TO 28N170W MOVING SE 10 KT. WINDS 20 TO 25 KT FROM
30N TO 27N BETWEEN 175W AND 164W. SEAS 2.5 TO 3 M FROM 30N TO 27N
BETWEEN 175W AND 165W. 
.24 HOUR FORECAST TROUGH FROM 30N149W TO 27N157W. WINDS 20 TO 25 KT 
IN AREA BOUNDED BY 30N149W 26N160W 27N170W 29N170W 287N160W 
30N149W. SEAS 2.5 TO 3 M N OF LINE FROM 30N155W TO 28N166W TO 
27N176W. 
.48 HOUR FORECAST TROUGH 30N149W TO 26N158W. WINDS 20 TO 25 KT 
N OF LINE FROM 30N149W TO 26N160W. SEAS 2.5 TO 3 M FROM 30N TO 26N
BETWEEN 145W AND 160W.

.TROUGH 08N161W TO 16N155W. SCATTERED MODERATE TO ISOLATED STRONG
TSTMS FROM 09N TO 15N BETWEEN 151W AND 163W. 
.24 HOUR FORECAST TROUGH 09N164W TO 16N160W. 
.48 HOUR FORECAST TROUGH MERGED WITH MONSOON TROUGH.

.TROUGH 29N177W TO 24N174W MOVING W 15 KT. 
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH 24N144W TO 19N144W TO 13N141W MOVING W TO 10 KT.
.24 HOUR FORECAST TROUGH 24N149W TO 12N146W.
.48 HOUR FORECAST TROUGH 25N155W TO 15N153W. 

.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 14N TO 24N BETWEEN 150W 
AND 165W. SEAS 2.5 TO 3 M FROM 15N TO 24N BETWEEN 150W AND 165W.

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

.ITCZ 05N140W 05N143W 05N146W 05N151W. SCATTERED MODERATE TSTMS 
FROM 00N TO 08N E OF 151W.

.MONSOON TROUGH FROM 06N180W 04N175W 03N168W 04N163W. SCATTERED 
MODERATE TO ISOLATED STRONG TSTMS N OF TROUGH FROM 05N TO 09N 
W OF 172W.

$$

.FORECASTER KINO. HONOLULU HI.