High Seas Forecast
Issued by NWS
Issued by NWS
516 FZPN40 PHFO 222234 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC WED MAY 22 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1800 UTC MAY 22 2024. 24 HOUR FORECAST VALID 1800 UTC MAY 23 2024. 48 HOUR FORECAST VALID 1800 UTC MAY 24 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N165W 20N168W MOVING W SLOWLY. ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH N OF 24N. .24 HOUR FORECAST TROUGH 30N167W 20N170W .48 HOUR FORECAST TROUGH 30N168W 2N172W 19N176W. .TROUGH 09N175W 02N170E MOVING W 10 KT. SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH N OF 07N. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 240 NM OF TROUGH. .24 HOUR FORECAST TROUGH 11N176E 05N170E. .48 HOUR FORECAST TROUGH DISSIPATED. .NE TO E WINDS 20 TO 25 KT N OF 06N AND E OF 158W. .24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT N OF 06N AND E OF 165W. .48 HOUR FORECAST WINDS 20 TO 25 KT 07N TO 19N BETWEEN 165W AND 148W. .SEAS 8 TO 10 FT BETWEEN 05N AND 28N E OF 160W. .24 HOUR FORECAST SEAS 8 TO 10 FT BETWEEN 03N AND 27N E OF 163W. .48 HOUR FORECAST SEAS 8 TO 10 FT BETWEEN 03N AND 25N E OF 168W. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS. .ISOLATED MODERATE TSTMS FROM 08N TO 12N BETWEEN 172W AND 179W. .ITCZ 06N140E 06N150W 07N170W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ. $$ .FORECASTER POWELL/PIERCE. HONOLULU HI.