512
FZPN40 PHFO 161002
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 16 2026.
24 HOUR FORECAST VALID 0600 UTC AUG 17 2026.
48 HOUR FORECAST VALID 0600 UTC AUG 18 2026.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE LALA NEAR 19.4N 157.1W 988 MB AT 0900 UTC AUG 16
MOVING NW OR 310 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 65 KT
GUSTS 80 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 180 NM S SEMICIRCLE...270 NM NE QUADRANT AND
300 NM NW 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.
ISOLATED MODERATE TSTMS WITHIN 90 NM E SEMICIRCLE OF CENTER.
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 20.5N 161.9W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM NW AND SE QUADRANTS...110 NM NE QUADRANT AND 30 NM
SW QUADRANT. SEAS 4 M OR GREATER FROM 20N TO 23N BETWEEN 162W AND
164W WITH SEAS TO 5.5 M. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M
ELSEWHERE FROM 17N TO 26N BETWEEN 158W TO 167W.
.48 HOUR FORECAST TROPICAL STORM LALA NEAR 20.4N 166.5W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 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 FROM 20N TO
24N BETWEEN 165W AND 169W WITH SEAS TO 6 M. WINDS 20 TO 30 KT
AND SEAS 2.5 TO 4 M ELSEWHERE FROM 18N TO 26N BETWEEN 163 AND
172W.

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

.TROUGH 07N164W 04N166W 02N166W MOVING W 5 KT.
.24 HOUR FORECAST TROUGH 08N167W 02N168W.
.48 HOUR FORECAST TROUGH 07N165W 02N169W.

.LOW 05N174W 1008 MB MOVING W 5 KT. WINDS 20 TO 25 KT WITHIN
120 NM SOUTH SEMICIRCLE.
.24 HOUR FORECAST LOW 07N177W. WINDS WEAKENED BELOW 20 KT.
.48 HOUR FORECAST LOW WEAKENED TO TROUGH 10N176W 05N177W

.24 HOUR FORECAST NEW LOW 17N141W.
.48 HOUR FORECAST LOW 18N144W.

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

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

.MONSOON TROUGH 05N180W 08N168W 09N160W 11N154W. SCATTERED MODERATE
TSTMS WITHIN 120 NM OF TROUGH.

.ITCZ 04N151W 04N146W 05N140W. ISOLATED MODERATE TSTMS WITHIN 150 NM
OF ITCZ.

.SCATTERED MODERATE TSTMS S OF LINE 09N154W 03N175W.

$$

.FORECASTER M BALLARD. HONOLULU HI.