The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 08/09/2026 08:39:23 AM UTC
                        
701
FZPN40 PHFO 082239
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SAT AUG 08 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 08 2026.
24 HOUR FORECAST VALID 1800 UTC AUG 09 2026.
48 HOUR FORECAST VALID 1800 UTC AUG 10 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST

.TROUGH 30N155W 27N157W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 30N165W 26N168W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 12N148W 1010 MB MOVING W 10 KT. TROUGH FROM 16N147W TO
LOW TO 09N149W MOVING W 10 KT. ASSOCIATED SEAS DESCRIBED BELOW.
ISOLATED MODERATE TSTMS FROM 15N TO 11N BETWEEN 151W AND 147W.
.24 HOUR FORECAST LOW WEAKENED TO TROUGH 14N152W 08N157W.
.48 HOUR FORECAST TROUGH 14N158W 08N160W.

.48 HOUR FORECAST NEW LOW NEAR 09N141W. WINDS 20 TO 25 KT FROM
15N TO 10N E OF 149W.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 2.5 TO 3 M FROM 20N TO 14N BETWEEN 152W AND 143W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 21N TO 13N E OF 159W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 20N TO 13N E OF 158W.

.ITCZ 08N146W 05N156W 06N167W. ISOLATED MODERATE TSTMS WITHIN 240
NM OF ITCZ.

.ISOLATED MODERATE TSTMS S OF 14N E OF 144W...AND FROM 12N TO 08N
BETWEEN 173W AND 166W.

$$

.FORECASTER TROTTER. HONOLULU HI.