National Weather Service Marine Forecast FZPN40 PHFO

FZPN40 PHFO 030313
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC MON AUG 03 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 03 2026. 24 HOUR FORECAST VALID 0000 UTC AUG 04 2026. 48 HOUR FORECAST VALID 0000 UTC AUG 05 2026.

.WARNINGS.

GALE WARNING

.POST-TROPICAL LOW OF GENEVIEVE 1009 MB NEAR 25.4N 140.1W. WINDS 25 TO 35 KT BETWEEN 28N AND 24N E OF 143W. WINDS 20 TO 25 KT ELSEWHERE N OF 24N E OF 144W. SEAS 4 TO 4.5 M FROM 27N TO 25N E OF 141W. SEAS 2.5 TO 4 M ELSEWHERE N OF 22N E OF 146W. .24 HOUR FORECAST POST-TROPICAL LOW OF GENEVIEVE 1009 MB NEAR 26.7N 143.8W. WINDS 20 TO 30 KT N OF 25N E OF 147W. SEAS 2.5 TO 3.5 M N OF 26N E OF 147W. .48 HOUR FORECAST REMNANT LOW GENEVIEVE 1012 MB NEAR 28.0N 145.4W. WINDS 20 TO 25 KT N OF 28N BETWEEN 146W AND 142W. ASSOCIATED SEAS SUBSIDED TO 2.5 M OR LOWER.

.SYNOPSIS AND FORECAST

.TROUGH 14N145W 09N149W 062N154W MOVING W 10 KT. .24 HOUR FORECAST TROUGH 15N148W 05N156W. .48 HOUR FORECAST TROUGH 12N156W 04N166W.

.LOW NEAR 08N166W 1009 MB AND TROUGH FROM 11N162W THROUGH LOW TO 02N169W. LOW AND TROUGH MOVING W SLOWLY. .24 HOUR FORECAST LOW NEAR 09N170W 1008 MB. TROUGH FROM 13N169W THROUGH LOW TO 02N175W. .48 HOUR FORECAST LOW NEAR 11N174W 1009MB. TROUGH FROM 11N170W TO 06N179W.

.48 HOUR FORECAST FRONT 30N170W 29N174W 30N178W NEARLY STATIONARY.

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

.SEAS 2.5 TO 3 M FROM 27N TO 12N BETWEEN 170W AND 153W. .24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 27N TO 11N W OF 165W. .48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 27N TO 18N W OF 175W.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 05N140W 06N147W.

.SCATTERED MODERATE TSTMS N OF 21N W OF 175W.

ISOLATED MODERATE TSTMS FROM 12N TO 02N E OF 145W
AND BETWEEN 163W AND 150W S OF 10N.

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.FORECASTER VAUGHAN. HONOLULU HI.