239
FZPN40 PHFO 131515 AAC
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN SEP 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 13 2026.
24 HOUR FORECAST VALID 1200 UTC SEP 14 2026.
48 HOUR FORECAST VALID 1200 UTC SEP 15 2026.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM NORBERT NEAR 18.2N 132.7W 1000 MB AT 1500 UTC
SEP 13 MOVING W OR 280 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE
QUADRANT...20 NM SE QUADRANT...30 NM SW QUADRANT...AND 90 NM NW
QUADRANT.  SEAS 4 M OR GREATER WITHIN 90 NM N SEMICIRCLE AND 30
NM S SEMICIRCLE WITH SEAS TO 4 M.
.48 HOUR FORECAST TROPICAL STORM NORBERT NEAR 19.7N 142.4W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 0 NM S SEMICIRCLE...30 NM NE QUADRANT AND 20 NM NW
QUADRANT. SEAS 2.5 TO 3 M FROM 26N TO 19N E OF 145W.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.FRONT 30N169W 28N170W. FRONT NEARLY STATIONARY.
.24 HOUR FORECAST FRONT DISSIPATED.

.FRONT 30N171W 26N173W THENCE TROUGH 24N180W. FRONT AND TROUGH
MOVING E SLOWLY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N171W 23N179W.
.48 HOUR FORECAST TROUGH 30N172W 23N180W.

.TROUGH 30N151W 28N153W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 30N154W 28N155W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 11N148W 1007 MB. TROUGH FROM 30N141W TO 18N151W TO LOW.
TROUGH MOVING NW 10 KT AND LOW NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 19N TO 11N WITHIN 120 NM OF TROUGH AND FROM 30N
TO 27N WITHIN 120 NM E OF TROUGH.
.24 HOUR FORECAST LOW NEAR 11N148W 1006 MB. TROUGH FROM 30N146W
TO 21N151W TO 15N153W TO LOW.
.48 HOUR FORECAST LOW NEAR 11N153W 1006 MB. TROUGH FROM 30N151W
TO 20N154W TO 15N157W TO LOW.

.LOW NEAR 13N142W 1007 MB. MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 13N146W 1008 MB.
.48 HOUR FORECAST LOW NEAR 13N150W 1009 MB.

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

.MONSOON TROUGH 09N180W 09N175W 09N170W 09N160W. ISOLATED MODERATE
TSTMS WITHIN 240 NM OF TROUGH W OF 170W.

.MONSOON TROUGH 13N140W 13N142W 12N145W 11N149W 10N156W. ISOLATED
MODERATE TSTMS 360 NM S OF TROUGH E OF 148W.

$$

.FORECASTER KINO. HONOLULU HI.