642
FZPN40 PHFO 151023
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 15 2026.
24 HOUR FORECAST VALID 0600 UTC SEP 16 2026.
48 HOUR FORECAST VALID 0600 UTC SEP 17 2026.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION NORBERT NEAR 20.1N 141.1W 1008 MB MOVING W
AT 13 KT. WINDS 20 TO 30 KT WITHIN 270 NM N SEMICIRCLE OF LOW
CENTER E OF 142W. SEAS 2.5 TO 3 M S OF 28N E OF 143W.
.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 30N173W TO 26N175W TO 23N180W NEARLY STATIONARY.
TRAILING POST-FRONTAL TROUGH FROM 30N175W TO 27N177W TO 26N180W
MOVING W SLOWLY. ISOLATED MODERATE TSTMS WITHIN 270 NM E OF FRONT
N OF 26N.
.24 HOUR FORECAST NEW LOW NEAR 29N179W 1006 MB. 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. SCATTERED
MODERATE TSTMS FROM 10N TO 16N BETWEEN TROUGH AND 144W.
.24 HOUR FORECAST TROUGH FROM 13N150W TO 10N152W.
.48 HOUR FORECAST TROUGH FROM 12N155W TO 08N159W.

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

.SCATTERED MODERATE TSTMS S OF 06N BETWEEN 146W AND 156W. ISOLATED
TSTMS WITHIN 60 NM OF A LINE FROM 17N173W TO 22N173W.

.MONSOON TROUGH FROM 10N140W TO 10N150W TO 10N165W TO 06N180W.
ISOLATED MODERATE TSTMS WITHIN 240 NM OF TROUGH.


$$

.FORECASTER BLOOD. HONOLULU HI.