470
FZPN40 PHFO 180948
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC FRI OCT 18 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 160E

SYNOPSIS VALID 0600 UTC OCT 18 2024.
24 HOUR FORECAST VALID 0600 UTC OCT 19 2024.
48 HOUR FORECAST VALID 0600 UTC OCT 20 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N172W 27N180W 27N174E...THENCE TROUGH 26N167E 24N163E.
FRONT AND TROUGH MOVING SE 10 KT E OF 170E. TROUGH MOVING W 10 KT
W OF 170E. NE WINDS 20 TO 25 KT N OF LINE 30N173W 27N180W 26N170E
23N160E. ISOLATED MODERATE TSTMS FROM 25N TO 28N BETWEEN 170E AND
176E.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N168W 25N180W
24N175E 27N162E 26N160E. NE WINDS 20 TO 25 KT N OF TROUGH E OF
173W. NE TO E WINDS 20 TO 25 KT N OF TROUGH W OF 170E.
.48 HOUR FORECAST TROUGH 30N171W 25N180W 23N170E 26N160E. NE TO E
WINDS 20 TO 25 KT FROM 22N TO 27N W OF 174E.

.TROUGH 30N167W 25N172W 18N177W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 90 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N166W 24N170W 19N178E.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH MENTIONED ABOVE.

.NE TO E WINDS 20 TO 25 KT FROM 10N TO 19N BETWEEN 158W AND 145W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

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

.SEAS 8 TO 11 FT N OF LINE 16N160E 26N170E 30N171W...AND FROM 02N
TO 20N E OF 165W.
.24 HOUR FORECAST SEAS 8 TO 10 FT W OF LINE 30N160E 27N165E
24N160E. SEAS 8 TO 9 FT FROM 09N TO 16N E OF 161W.
.48 HOUR FORECAST SEAS LOWERED TO 8 FT OR LESS.

.SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 09N140W 08N144W 10N152W 09N160W 09N173W 08N178W 06N180W.
SCATTERED MODERATE TSTMS WITHIN 210 NM N AND 150 NM S OF ITCZ.
ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 420 NM EITHER SIDE OF
ITCZ.

.ISOLATED TO SCATTERED MODERATE TSTMS FROM 02N TO 15N W OF
176E...AND FROM 15N TO 20N BETWEEN 172E AND 175W.

$$

.FORECASTER JELSEMA. HONOLULU HI.