715
FZPN40 PHFO 190333
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19 2026.
24 HOUR FORECAST VALID 0000 UTC AUG 20 2026.
48 HOUR FORECAST VALID 0000 UTC AUG 21 2026.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE LALA NEAR 20.7N 168.9W 953 MB AT 0300 UTC AUG 19
MOVING WNW OR 285 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N
SEMICIRCLE AND 70 NM S SEMICIRCLE. WINDS 20 TO 30 KT ELSEWHERE
FROM 18N TO 25N BETWEEN 164W AND 171W. SEAS 4 M OR GREATER WITHIN
180 NM N SEMICIRCLE...105 NM SE QUADRANT AND 135 NM SW QUADRANT
WITH SEAS TO 8 M. SEAS 2.5 TO 4 M ELSEWHERE FROM 17N TO 27N
BETWEEN 163W AND 175W.
.24 HOUR FORECAST HURRICANE LALA NEAR 22.5N 171.1W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM N SEMICIRCLE...90 NM SE QUADRANT AND 60 NM SW
QUADRANT. WINDS 20 TO 30 KT ELSEWHERE 20N TO 27N BETWEEN 166W AND
174W. SEAS 4 M OR GREATER WITHIN 160 NM N SEMICIRCLE AND 60 NM S
SEMICIRCLE WITH SEAS TO 10.5 M. SEAS 2.5 TO 4 M ELSEWHERE FROM 17N
TO 28N BETWEEN 165W AND 179W.
.48 HOUR FORECAST HURRICANE LALA NEAR 25.4N 171.7W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 130 NM N SEMICIRCLE...110 NM SE QUADRANT AND 80 NM SW
QUADRANT. WINDS 20 TO 30 KT ELSEWHERE FROM 22N TO 29N BETWEEN 168W
AND 179W. SEAS 4 M OR GREATER WITHIN 150 NM FROM THE CENTER WITH
SEAS TO 9.5 M. SEAS 2.5 TO 4 M ELSEWHERE FROM 21N TO 31N BETWEEN
166W AND 177W.

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

.LOW 20N148W 1009 MB...TROUGH FROM 14N152W TO LOW TO 24N146W...
BOTH MOVING W SLOWLY. ISOLATED MODERATE TSTMS FROM 20N TO 22N
BETWEEN 142W AND 147W.
.24 HOUR FORECAST LOW OPENED TO A TROUGH FROM 15N153W TO 18N150W
TO 23N150W.
.48 HOUR FORECAST TROUGH FROM 15N157W TO 19N156W TO 24N156W.

.LOW NEAR 11N175W 1009 MB MOVING W SLOWLY. ISOLATED TSTMS FROM
09N TO 12N W OF 173W.
.24 HOUR FORECAST LOW 11N177W 100N MB.
.48 HOUR FORECAST LOW OPENED INTO A TROUGH FROM 11N180W TO
17N173W.

.24 HOUR FORECAST NEW LOW NEAR 10N140W 1008 MB.
.48 HOUR FORECAST NEW LOW NEAR 10N145W 1007 MB.

.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 11N160W TO LOW NEAR 11N175W TO 10N180W. SCATTERED
MODERATE TO ISOLATED STRONG TSTMS FROM 03N BETWEEN 164W AND 174W.

.ANOTHER MONSOON TROUGH 09N140W TO 09N143W. SCATTERED MODERATE
TSTMS FROM 01N TO 08N E OF 149W.

$$

.FORECASTER CHAN. HONOLULU HI.