High Seas Forecast
Issued by NWS
Issued by NWS
446 FZPS40 PHFO 220245 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0530 UTC WED MAY 22 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 MAY 22 2024. 24 HOUR FORECAST VALID 0000 UTC MAY 23 2024. 48 HOUR FORECAST VALID 0000 UTC MAY 24 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT FROM 25S170W TO 21S179E THENCE TROUGH TO 12S160E. FRONT MOVING E 10 KT AND TROUGH NEARLY STATIONARY. ISOLATED MODERATE TSTMS WITHIN 240 NM OF TROUGH AND FRONT. WINDS 20 TO 25 KT FROM 20S TO TROUGH W OF 175E. .24 HOUR FORECAST WEAKENING FRONT FROM 25S170W TO 20S180W THENCE TROUGH TO 13S165E. WINDS 20 TO 25 KT FROM 20S TO TROUGH W OF 165E. .48 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 25S173W TO 11S160E. WINDS 20 TO 30 KT S OF TROUGH W OF 170E. .TROUGH FROM 25S120W TO 17S130W 13S140W 08S178W. SCATTERED STRONG TSTMS WITHIN 300 NM OF TROUGH W OF 155W...AND WITHIN 300 NM OF LINE FROM 08S178E TO 05S165E. .24 HOUR FORECAST TROUGH 21S120W 16S130W 15S140W. .48 HOUR FORECAST TROUGH 25S120W 19S129W 13S146W. .SEAS 8 TO 10 FT S OF LINE FROM 25S150W 15S145W 25S130W...AND S OF 22S W OF 175E. .24 HOUR FORECAST SEAS 8 TO 10 FT S OF 22S BETWEEN 140W AND 120W...AND S OF 20S BETWEEN 170E AND 180W. .48 HOUR FORECAST SEAS 8 TO 9 FT FROM 20S TO 10S W OF 163W. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS. .ISOLATED MODERATE TSTMS N OF 08S W OF 173E. $$ .FORECASTER PECHACEK. HONOLULU HI.