371
FZPN40 PHFO 110245
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI SEP 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 11 2026.
24 HOUR FORECAST VALID 0000 UTC SEP 12 2026.
48 HOUR FORECAST VALID 0000 UTC SEP 13 2026.

.WARNINGS.

...GALE WARNING...
.POST-TROPICAL CYCLONE LOWELL NEAR 29.0N 169.9W 997 MB AT 0300
UTC SEP 11 MOVING W OR 270 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS
45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 160 NM NE
QUADRANT...80 NM SE QUADRANT...0 NM SW QUADRANT...AND 120 NM NW
QUADRANT.  SEAS 4 M OR GREATER WITHIN 540 NM NE QUADRANT...240
NM SE QUADRANT...270 NM SW QUADRANT...AND 420 NM NW QUADRANT
WITH SEAS TO 6 M. SEAS 2.5 TO 4 M ELSEWHERE N OF 26N W OF 159W.
.24 HOUR FORECAST POST-TROPICAL LOWELL MOVED N OF AREA. WINDS 20
TO 30 KT N OF 27N BETWEEN 175W AND 165W. SEAS 2.5 TO 4 M N OF 27N
W OF 163W.

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

.SYNOPSIS AND FORECAST

.LOW 09N160W 1008 MB NEARLY STATIONARY.
.24 HOUR FORECAST LOW DISSIPATED.

.TROUGH 25N160W TO 21N160W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 25N164W TO 21N162W.
.48 HOUR FORECAST TROUGH 26N166W TO 23N164W.

.TROUGH 25N140W TO 19N145W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 26N141W TO 20N146W.
.48 HOUR FORECAST TROUGH 24N147W TO 16N147W.

.TROUGH 30N147W TO 27N148W MOVING NW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 90NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N150W TO 25N150W.
.48 HOUR FORECAST TROUGH 30N153W TO 26N154W.

.TROUGH 14N142W TO 09N149W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 16N146W TO 10N151W.
.48 HOUR FORECAST TROUGH 20N148W TO 10N152W.

.48 HOUR FORECAST NEW FRONT 30N175W TO 24N179W.

.SEAS 2.5 TO 3 M N OF 28N BETWEEN 147W AND 155W.

.24 HOUR FORECAST SEAS SUBSIDED BELOW 2.5 M.

.WINDS 20 TO 25 KT N OF 25N BETWEEN 170W AND 165W.

.24 HOUR FORECAST WINDS 20 TO 25 KT WINDS DIMINISHED TO
20 KT OR LESS.

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

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

.MONSOON TROUGH FROM 09N149W TO FIRST LOW DESCRIBED ABOVE TO
SECOND LOW TO 08N170W TO 06N180W.

.ISOLATED MODERATE TSTMS S OF 07N BETWEEN 168W AND 160W.

$$

.FORECASTER JVC. HONOLULU HI.