High Seas Forecast
Issued by NWS
Issued by NWS
140 FZPS40 PHFO 182238 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2330 UTC WED SEP 18 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 OCTOBER 16 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 SEP 18 2024. 24 HOUR FORECAST VALID 1800 UTC SEP 19 2024. 48 HOUR FORECAST VALID 1800 UTC SEP 20 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 25S132W 22S131W 20S131W NEARLY STATIONARY. ISOLATED MODERATE TSTMS FROM 20S TO 16S BETWEEN 131W AND 125W. .24 HOUR FORECAST TROUGH 25S131W 20S133W. .48 HOUR FORECAST TROUGH DISSIPATED. .FRONT 25S156W 22S160W 19S166W 14S176E 10S168E 10S162E. FRONT MOVING E 15 KT S OF 19S AND NEARLY STATIONARY N OF 19S. ISOLATED MODERATE TSTMS FROM 13S TO 10S BETWEEN 172E AND 174W. .24 HOUR FORECAST FRONT 25S148W 22S155W 20S163W 14S179W. .48 HOUR FORECAST FRONT WEAKENS TO TROUGH 25S140W 19S143W. .TROUGH 17S157W 10S171W 07S174E 04S167E NEARLY STATIONARY. ISOLATED MODERATE TSTMS FROM 12S TO 09S BETWEEN 172W AND 164W. .24 HOUR FORECAST TROUGH 08S175W 06S178E 04S176E. .48 HOUR FORECAST TROUGH 06S175E 05S170E 03S168E. .24 HOUR FORECAST NEW TROUGH 07S167W 03S171W. .48 HOUR FORECAST TROUGH 09S157W 07S168W 05S174W 04S175W. .WINDS EASED TO 20 KT OR LESS. .24 HOUR FORECAST WINDS EASED TO 20 KT OR LESS. .48 HOUR FORECAST WINDS 20 TO 25 KT FROM 20S TO 17S BETWEEN 174W AND 160W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 12 FT S OF LINE 25S167W 20S179W 16S174E 2S166E 18S163E 12S160E. .24 HOUR FORECAST SEAS 8 TO 10 FT S OF LINE 25S158W 18S166W 12S173E 25S167E. .48 HOUR FORECAST SEAS 8 TO 9 FT S OF LINE 25S152W 15S160W 09S179E 17S174E 25S165W. .SEAS 8 FT OR LOWER REMAINDER FORECAST. $$ .FORECASTER TROTTER. HONOLULU HI.