789
FZPN40 PHFO 151450
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC TUE SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 15 2026.
24 HOUR FORECAST VALID 1200 UTC SEP 16 2026.
48 HOUR FORECAST VALID 1200 UTC SEP 17 2026.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION NORBERT NEAR 20.1N 141.1W 1006 MB MOVING W
AT 13 KT. WINDS 20 TO 30 KT WITHIN 180 NM N SEMICIRCLE OF LOW
CENTER E OF 144W. SEAS 2.5 TO 4 M FROM 20N TO 25N E OF 144W.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW NORBERT NEAR 20.6N
146.3W. WINDS 20 TO 30 KT WITHIN 150 NM N SEMICIRCLE OF LOW CENTER
BETWEEN 145W AND 148W. SEAS 2.5 TO 3 M FROM 21N TO 25N BETWEEN E
OF 149W.
.48 HOUR FORECAST REMNANT LOW NORBERT WEAKENED TO TROUGH FROM
21N153W TO 18N153W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M FROM 21N
TO 24N BETWEEN 150W AND 154W.

.FRONT FROM 30N171W TO 25N174W TO 22N180W WITH TRAILING POST-
FRONTAL TROUGH FROM 30N175W TO 27N178W BOTH NEARLY STATIONARY.
SCATTERED MODERATE TSTMS BETWEEN FRONT AND A LINE FROM 30N169W TO
24N176W. ISOLATED TSTMS WITHIN 60 NM EITHER SIDE OF TROUGH FROM
28N TO 29N.
.24 HOUR FORECAST FRONT AND TROUGH MERGED FROM 30N176W TO 24N180W.
WINDS 20 TO 25 KT N OF 28N W BETWEEN 173W AND 176W. SEAS 2.5 TO 4 M
W OF LINE FROM 30N173W TO 26N180W.
.48 HOUR FORECAST LOW AND TROUGH MOVED W OF AREA. WINDS AND SEAS
LOWERED TO 20 KT OR LESS OR SUBSIDED TO 2.5 M OR LOWER...
RESPECTIVELY.

.TROUGH FROM 13N147W TO 10N151W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 270 NM W OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 13N150W TO 10N152W.
.48 HOUR FORECAST TROUGH FROM 12N155W TO 08N159W.

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

.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 15N TO 25N E OF 147W.

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

.SCATTERED MODERATE TSTMS S OF 08N BETWEEN 147W AND 156W.
ISOLATED TSTMS E OF A LINE FROM 04N140W TO 00N144W.

.MONSOON TROUGH FROM 10N140W TO 10N150W TO 10N165W TO 06N180W.
ISOLATED MODERATE TSTMS WITHIN 330 NM S OF TROUGH BETWEEN 163W AND
166W...AND WITHIN 90 NM OF 12N143W ALONG TROUGH.


$$

.FORECASTER BLOOD. HONOLULU HI.