887
FZPN40 PHFO 200342
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC THU NOV 20 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 160E

SYNOPSIS VALID 0000 UTC NOV 20 2025.
24 HOUR FORECAST VALID 0000 UTC NOV 21 2025.
48 HOUR FORECAST VALID 0000 UTC NOV 22 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N171E 28N168E 28N164E 26N160E MOVING E 10 KT.
.24 HOUR FORECAST FRONT 30N177E 29N169E 30N164E.
.48 HOUR FORECAST FRONT 30N172W 28N179W 30N174E.

.TROUGH 28N165W 23N173W 14N179W MOVING W 15 KT. SCATTERED
MODERATE TSTMS FROM 24N TO 17N BETWEEN 178W AND 167W.
.24 HOUR FORECAST TROUGH 21N172E 14N173E. TROUGH N OF 21N
DETACHED AND MERGED WITH TROUGH DESCRIBED BELOW.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 17N157W 11N163W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH 26N165W 20N166W 13N172W.
.48 HOUR FORECAST TROUGH 22N168W 17N173W 12N176W.

.WINDS 20 TO 25 KT N OF 25N BETWEEN 170W AND 156W...AND W OF LINE
20N160E 26N173W 16N174W 08N160E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 24N TO 08N W OF 177E.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

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

.SEAS 2.5 TO 4.5 M N OF LINE 30N174W 20N160E 07N160E 11N167W
08N140W 17N140W 25N152W 30N149W. SEAS 2.5 TO 3 M N OF LINE 30N170E
27N160E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M N OF 07N EXCEPT N OF 23N
BETWEEN 178W AND 168W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 05N160E 12N166E
10N170E 06N172E 10N173W 02N152W 03N140W EXCEPT N OF LINE 30N167E
24N160E.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 08N140W 08N165W 08N160E. SCATTERED MODERATE TSTMS FROM 13N
TO 10N BETWEEN 176W AND 170W. ISOLATED MODERATE TSTMS ELSEWHERE
WITHIN 180 NM OF ITCZ W OF 170E AND E OF 170W.

$$

.FORECASTER TROTTER. HONOLULU HI.