


High Seas Forecast
Issued by NWS
Issued by NWS
895 FZPS40 PHFO 300340 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0530 UTC SAT AUG 30 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC AUG 30 2025. 24 HOUR FORECAST VALID 0000 UTC AUG 31 2025. 48 HOUR FORECAST VALID 0000 UTC SEP 01 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT 20S120W 19S127W 17S136W 19S147W MOVING E 15 KT S OF 19S AND NEARLY STATIONARY ELSEWHERE. .24 HOUR FORECAST FRONT 19S120W 17S127W THENCE TROUGH 18S139W 20S146W. .48 HOUR FORECAST FRONT AND TROUGH DISSIPATED. .FRONT 25S161W 21S168W THENCE TROUGH 15S177W 12S179E 07S178E. FRONT AND TROUGH S OF 15S MOVING E 10 KT. TROUGH MOVING W 10 KT ELSEWHERE. SCATTERED MODERATE TSTMS FROM 10S TO 15S BETWEEN 177W AND 175E. .24 HOUR FORECAST FRONT 25S151W 21S160W THENCE TROUGH 19S167W. SECOND DETACHED TROUGH 15S175E 08S173E. .48 HOUR FORECAST FRONT 25S135W 19S143W THENCE TROUGH 15S156W 14S164W. SECOND DETACHED TROUGH 14S170E 08S167E. .24 HOUR FORECAST NEW FRONT 25S171E 19S160E. .48 HOUR FORECAST FRONT 25S171W 21S174E. .WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA. .SEAS MAINLY 2.5 TO 4.0 M E OF LINE 25S146W 19S155W 02S140W. .24 HOUR FORECAST SEAS 2.5 TO 3.0 M S OF 05S E OF 140W...AND S OF LINE 25S167E 22S160E. .48 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 25S180E 20S160E. SEAS MAINLY 2.5 TO 3.0 M S OF 03S E OF 130W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ISOLATED MODERATE TSTMS 07S TO 03S W OF 163E. $$ .FORECASTER AHUE. HONOLULU HI.