High Seas Forecast
Issued by NWS
Issued by NWS
417 FZPS40 PHFO 031032 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1130 UTC THU APR 03 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0600 UTC APR 03 2025. 24 HOUR FORECAST VALID 0600 UTC APR 04 2025. 48 HOUR FORECAST VALID 0600 UTC APR 05 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 25S155W 18S160W 13S170W NEARLY STATIONARY. SCATTERED TO NUMEROUS MODERATE TO STRONG TSTMS WITHIN 210 NM E OF TROUGH. ISOLATED MODERATE TSTMS WITHIN 120 NM W OF TROUGH. .24 HOUR FORECAST TROUGH 25S156W 16S165W 15S170W 15S176W 08S173E 09S160E. .48 HOUR FORECAST TROUGH 25S156W 18S160W 15S170W 15S177W 10S166E. N WINDS 20 TO 25 KT N OF 22S BETWEEN 155W AND 152W. .TROUGH 09S169W 03S180W MOVING SW 20 KT. SCATTERED MODERATE TSTMS WITHIN 180 NM NE OF TROUGH. .24 HOUR FORECAST TROUGH MERGED WITH THROUGH MENTIONED DIRECTLY ABOVE. .24 HOUR FORECAST NEW TROUGH 25S159W 23S166W. .48 HOUR FORECAST TROUGH 25S156W 21S164W. .48 HOUR FORECAST NEW FRONT 25S167E 24S165E 23S160E. .WINDS 20 KT OR LESS REMAINDER OF FORECAST AREA. .SEAS 8 TO 10 FT S OF LINE 25S170E 21S170W 25S159W. SEAS 8 TO 9 FT E OF LINE 13S120W 15S138W 25S132W. .24 HOUR FORECAST SEAS 12 TO 13 FT S OF 24S BETWEEN 168W AND 162W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 25S179E 19S170W 19S160W 25S146W. SEAS 8 TO 9 FT FROM 11S TO 18S E OF 126W. .48 HOUR FORECAST SEAS 8 TO 10 FT S OF LINE 25S175W 19S170E 19S155W 25S140W. .SEAS 8 FT OR LESS REMAINDER FORECAST AREA. .ITCZ 01S120W 05S135W 05S145W 06S155W 06S160W. SCATTERED MODERATE TSTMS FROM 04S TO 08S BETWEEN 125W AND 121W. ISOLATED MODERATE TSTMS WITHIN 60 NM OF ITCZ W OF 138W. .ISOLATED TO SCATTERED MODERATE TSTMS IN AREA BOUNDED BY 03S160E 05S170E 02S178E 19S172W 19S174E 16S166E 08S160E. ISOLATED MODERATE TSTMS FROM 14S TO 22S BETWEEN 138W AND 131W. $$ .FORECASTER JELSEMA. HONOLULU HI.