331
FZPN40 PHFO 160310
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SUN AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 16 2026.
24 HOUR FORECAST VALID 0000 UTC AUG 17 2026.
48 HOUR FORECAST VALID 0000 UTC AUG 18 2026.

.WARNINGS.
...HURRICANE WARNING...
.HURRICANE LALA NEAR 18.7N 156.0W 985 MB AT 0300 UTC AUG 16
MOVING NW OR 320 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 70 KT
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM S
SEMICIRCLE...150 NM NE QUADRANT AND 90 NM NW QUADRANT.SEAS 4 M
OR GREATER WITHIN 300 NM N SEMICIRCLE...180 NM SE QUADRANT AND
210 NM SW QUADRANT WITH SEAS TO 5.5 M. WINDS 20 TO 30 KT AND SEAS
2.5 TO 4 M ELSEWHERE FROM 10N TO 25N BETWEEN 165W AND 148W.
.12 HOUR FORECAST TROPICAL STORM LALA NEAR 19.6N 157.7W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. ISOLATED MODERATE TSTMS WITHIN
120 NM OF CENTER.
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 20.2N 160.5W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 30 NM
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM OF CENTER WITH
SEAS TO 5 M. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M FROM 15N TO 25N
BETWEEN 169W AND 155W.
.48 HOUR FORECAST TROPICAL STORM LALA NEAR 20.2N 165.1W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM NE QUADRANT...60 NM SE QUADRANT...40 NM SW
QUADRANT...AND 50 NM NW QUADRANT. SEAS 4 M OR GREATER
WITHIN 120 NM OF CENTER WITH SEAS TO 5 M. WINDS 20 TO 30 KT AND
SEAS 2.5 TO 4 M ELSEWHERE FROM 18N TO 28N BETWEEN 175W AND 160W.

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

SEE THE LATEST BULLETIN ISSUED BY NHC UNDER WMO HEADER WTPA22
PHFO.

.SYNOPSIS AND FORECAST

.24 HOUR FORECAST LOW 17N140W 1007 MB. TROUGH FROM LOW TO 10N141W.
WINDS 20 TO 30 KT WITHIN 180 NM OF LOW.
.48 HOUR FORECAST LOW 17N143W 1008 MB. TROUGH FROM LOW TO 10N143W.
WINDS 20 TO 25 KT WITHIN 180 NM OF LOW.

.LOW 05N173W 1008 MB MOVING W 5 KT.
.24 HOUR FORECAST LOW WEAKENING TO TROUGH 11N169W 05N180W.
.48 HOUR FORECAST TROUGH 10N175W 05N180W

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

.SEAS 2.5 TO 3 M FROM 14N TO 24N E OF 145W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 16N TO 21N E OF 144W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 18N TO 20N BETWEEN 143W
AND 147W.

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

.MONSOON TROUGH 04N180W 10N165W 10N155W 13N150W. SCATTERED MODERATE
TSTMS WITHIN 120 NM OF TROUGH.

.ITCZ 05N150W 05N140W. ISOLATED MODERATE TSTMS WITHIN 90 NM OF
ITCZ.

.SCATTERED MODERATE TSTMS FROM 00N TO 05N BETWEEN 180W AND
155W...AND N OF 28N W OF 178W.

$$

.FORECASTER PECHACEK. HONOLULU HI.