821
FZPN40 PHFO 122211
HSFNP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SUN APR 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 12 2026.
24 HOUR FORECAST VALID 1800 UTC APR 13 2026.
48 HOUR FORECAST VALID 1800 UTC APR 14 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N153W 24N153W THENCE TROUGH 21N156W 19N158W 15N164W.
FRONT MOVING ENE SLOWLY AND TROUGH NEARLY STATIONARY. S WINDS 20
TO 25 KT WITHIN 120 NM E OF FRONT. ISOLATED MODERATE TSTMS WITHIN
120 NM OF TROUGH S OF 20N.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH. TROUGH 30N152W
22N158W. WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST TROUGH 29N150W 27N156W.
.TROUGH 22N164W 15N172W 10N180W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 25N165W 17N168W 11N174W.
.48 HOUR FORECAST NEW FRONT 30N160W 25N160W THENCE TROUGH 17N168W
13N175W.
.WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA.
.SEAS 2.5 TO 3 M N OF LINE 30N157W 20N168W 23N180W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 28N W OF 164W.
.48 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LESS.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ITCZ 06N140W 06N160W 04N166W. SCATTERED MODERATE TSTMS FROM 09N
TO 03N BETWEEN 159W AND 144W.
.FORECASTER TROTTER. HONOLULU HI.
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