High Seas Forecast
Issued by NWS
Issued by NWS
748 FZPS40 PHFO 172314 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2330 UTC MON JUN 17 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL JULY 29 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND GRAPHICAL PRODUCTS FOR THE OFFSHORE AND HIGH SEAS AREAS ONLY. TO LEARN MORE PLEASE VISIT HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP SECURITE SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E SYNOPSIS VALID 1800 UTC JUN 17 2024. 24 HOUR FORECAST VALID 1800 UTC JUN 18 2024. 48 HOUR FORECAST VALID 1800 UTC JUN 19 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .COLD FRONT FROM 25S142W TO 22S147W TO 21S154W MOVING E 30 KT ALONG 25S AND SE 15 KT ELSEWHERE. WINDS 20 TO 30 KT S OF 21S BETWEEN 139W AND 156W. NUMEROUS STRONG TSTMS S OF 20S BETWEEN 137W AND 144W. .24 HOUR FORECAST FRONT FROM 25S133W TO 20S135W TO 12S144W THENCE TROUGH TO 09S157W. WINDS 20 TO 30 KT S OF A LINE FROM 18S123W TO 20S137W TO 22S147W. .48 HOUR FORECAST FRONT FROM 25S128W TO 18S132W TO 14S137W THENCE TROUGH TO 10S147W. WINDS 20 TO 30 KT S OF A LINE FROM 19S120W TO 20S132W TO 23S144W. .COLD FRONT FROM 25S179E TO 20S174E THENCE STATIONARY FRONT TO 16S168E TO 10S160E. COLD FRONT MOVING E 20 KT. ISOLATED MODERATE TSTMS WITHIN 60 NM E OF FRONT. .24 HOUR FORECAST FRONT FROM 25S174W TO 19S176E TO 13S168E TO 11S160E. .48 HOUR FORECAST FRONT FROM 25S168W TO 22S176W TO 19S178E THENCE TROUGH TO 15S173E TO 02S160E. SE WINDS 20 TO 25 KT FROM 07S TO 13S W OF 166E. .TROUGH FROM 25S132W TO 22S136W NEARLY STATIONARY. SCATTERED MODERATE TSTMS WITHIN 90 NM E OF TROUGH. .24 HOUR FORECAST TROUGH DISSIPATED. .TROUGH FROM 02S174W TO 05S171W TO 09S165W MOVING W 10 KT. SCATTERED MODERATE TSTMS FROM 05S TO 10S BETWEEN 165W AND 174W. .24 HOUR FORECAST TROUGH FROM 03S178E TO 09S174W. .48 HOUR FORECAST TROUGH FROM 05S171E TO 11S180E. .TROUGH FROM 02S168E TO 10S179E MOVING W 10 KT. SCATTERED MODERATE TSTMS FROM 02S TO 10S BETWEEN 180E AND 171E. .24 HOUR FORECAST TROUGH FROM 02S165E TO 08S171E. .48 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IN 2ND PARAGRAPH ABOVE. .SEAS 12 TO 14 FT S OF 23S BETWEEN 130W AND 152W. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE FROM 03S120W TO 10S131W TO 17S133W TO 19S142W TO 21S160W. ALSO SEAS 8 TO 11 FT S OF A LINE FROM 20S160E TO 22S166E TO 23S171E. ALSO SEAS 8 TO 10 FT FROM 11S TO 20S BETWEEN 161W AND 174W. .24 HOUR FORECAST SEAS 14 TO 20 FT S OF 22S BETWEEN 136W AND 146W. SEAS 12 TO 14 FT ELSEWHERE S OF A LINE FROM 18S120W TO 20S150W. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE FROM 08S120W TO 08S133W TO 15S140W TO 15S160W. ALSO SEAS 8 TO 9 FT S OF 22S W OF 168E. .48 HOUR FORECAST SEAS 12 TO 15 FT S OF 20S BETWEEN 123W AND 146W. ALSO SEAS 8 TO 12 FT S OF A LINE FROM 01S120W TO 07S135W TO 13S157W. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS. .ISOLATED MODERATE TSTMS FROM 07S TO 09S BETWEEN 126W AND 129W. $$ .FORECASTER BIRCHARD. HONOLULU HI.