


High Seas Forecast
Issued by NWS
Issued by NWS
328 FZPS40 PHFO 010311 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0530 UTC MON SEP 01 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 SEP 01 2025. 24 HOUR FORECAST VALID 0000 UTC SEP 02 2025. 48 HOUR FORECAST VALID 0000 UTC SEP 03 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 25S172W 22S180W 20S169E MOVING E 35 KT. .24 HOUR FORECAST TROUGH 25S155W 20S160W. .48 HOUR FORECAST TROUGH 25S136W 20S146W 18S153W. .TROUGH 25S134W 20S145W 22S158W MOVING E 30 KT. .24 HOUR FORECAST TROUGH 25S125W 20S130W 18S140W. .48 HOUR FORECAST TROUGH 25S120W 20S125W. .TROUGH 14S171E 09S160E MOVING S 10 KT. .24 HOUR FORECAST TROUGH 17S172E 12S160E. .48 HOUR FORECAST TROUGH 18S174E 15S170E. .WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA. .SEAS 2.5 TO 3 M E OF 125W S OF 05S. SEAS 2.5 TO 4 M S OF LINE 20S160E 25S175W. .24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S165E 15S175E 25S160W. .48 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 10S175E 22S145W 25S120W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .CONVERGENCE ZONE 11S151W 10S169W 08S178W. ISOLATED TSTMS WITHIN 150 NM POINT 08S173W. .ISOLATED MODERATE TSTMS WITHIN 150 NM OF LINE 07S160E 15S172E. $$ .FORECASTER PECHACEK. HONOLULU HI.