


High Seas Forecast
Issued by NWS
Issued by NWS
628 FZPS40 PHFO 121506 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1730 UTC SAT JUL 12 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E SYNOPSIS VALID 1200 UTC JUL 12 2025. 24 HOUR FORECAST VALID 1200 UTC JUL 13 2025. 48 HOUR FORECAST VALID 1200 UTC JUL 14 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT FROM 25S149W TO 22S153W TO 15N154W THENCE TROUGH FROM 11S177W TO 08S166E. FRONT MOVING E 20 KT AND TROUGH MOVING E SLOWLY. SCATTERED MODERATE TSTMS WITHIN 180 NM E OF FRONT S OF 19S. .24 HOUR FORECAST FRONT FROM 25S144W TO 20S151W THENCE TROUGH TO 13S167W. .48 HOUR FORECAST FRONT FROM 25S132W TO 20S138W THENCE TROUGH TO 17S148W. .FRONT FROM 25S179E TO 14S173E MOVING E AT 20 KT. WINDS 20 TO 25 KT S OF 18S WITHIN 300 NM E OF FRONT .24 HOUR FORECAST FRONT FROM 25S179E TO 21S178E TO 13S171E. WINDS 20 TO 30 KT S OF 20S WITHIN 330 NM E OF FRONT. SEAS 2.5 TO 4 M W OF FRONT S OF 23S. .48 HOUR FORECAST FRONT FROM 25S172W TO 19S176E. WINDS 20 TO 25 KT WITHIN 210 NM E OF FRONT S OF 20S. SEAS 2.5 TO 4.5 M W OF FRONT S OF 16S. .E WINDS 20 TO 25 KT N OF 10S BETWEEN 148W AND 167W. .24 HOUR FORECAST E WINDS 20 TO 25 KT BETWEEN 17S AND 09S BETWEEN 163W AND 171W...AND FROM 17S TO 12S W OF 163E. .48 HOUR FORECAST WINDS EASED 20 KT OR LESS. .OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 2.5 TO 3 M N OF 12S E OF 147W...AND WITHIN 180 NM OF 13S175E. .24 HOUR FORECAST SEAS 2.5 TO 3.5 M N OF 17S BETWEEN 179E AND 145W...AND E OF 140W. .48 HOUR FORECAST SEAS 2.5 TO 3 M N OF 14S E OF 175W. .OTHERWISE...SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .SCATTERED MODERATE TSTMS WITHIN 90 NM OF A LINE FROM 14S169W TO 11S179E...AND N OF 10S W OF 170E. $$ .FORECASTER BLOOD. HONOLULU HI.