High Seas Forecast
Issued by NWS
Issued by NWS
651 FZPN40 PHFO 231055 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1100 UTC MON SEP 23 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 0600 UTC SEP 23 2024. 24 HOUR FORECAST VALID 0600 UTC SEP 24 2024. 48 HOUR FORECAST VALID 0600 UTC SEP 25 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW NEAR 11N143W 1009 MB. TROUGH 13N140W TO LOW TO 09N150W. TROUGH AND LOW MOVING W SLOWLY. SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH AND LOW. .24 HOUR FORECAST LOW NEAR 11N146W 1010 MB. TROUGH 12N143W 08N151W. WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 12N TO 16N BETWEEN 145W AND 141W. .48 HOUR FORECAST LOW NEAR 12N150W 1011 MB. TROUGH 13N149W TO LOW TO 07N154W. WINDS EASED TO 20 KT OR LESS. SEAS 8 TO 10 FT FROM 14N TO 18N BETWEEN 150W TO 144W. .LOW NEAR 08N168W 1009 MB. TROUGH 11N164W TO LOW TO 06N172W. TROUGH AND LOW MOVING NW SLOWLY. ISOLATED MODERATE TSTMS WITHIN 240 NM OF LOW AND TROUGH. .24 HOUR FORECAST LOW NEAR 10N170W 1008 MB. TROUGH 13N164W TO LOW TO 09N174W. WINDS 20 TO 25 KT WITHIN 180 NM OF LOW AND TROUGH. .48 HOUR FORECAST LOW NEAR 12N171W 1009 MB. TROUGH 16N167W TO LOW TO 09N174E. WINDS 20 TO 30 KT AND SEAS 8 TO 10 FT WITHIN 180 NM OF LOW. .TROUGH 23N172E 17N170E 12N168E MOVING W SLOWLY. SCATTERED TO NUMEROUS MODERATE TSTMS FROM 20N TO 28N BETWEEN 177E AND 166E. .24 HOUR FORECAST TROUGH 18N167E 06N163E. .48 HOUR FORECAST TROUGH 18N163E 10N163W. .24 HOUR FORECAST NEW TROUGH 26N163E 22N162E. .48 HOUR FORECAST TROUGH MOVED W OF AREA. .ELSEWHERE WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .24 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 30N158W 24N170W 23N173W. SEAS 8 TO 9 FT FORM 20N TO 27N BETWEEN 173W AND 178W. .48 HOUR FORECAST SEAS 8 TO 9 FT N OF 27N BETWEEN 144W AND 154W. .ELSEWHERE SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ITCZ 09N153W 10N156W 10N161W ISOLATED MODERATE TSTMS WITHIN 180 NM OF ITCZ. .ISOLATED MODERATE TSTMS S OF 05N W OF 168E...AND FROM 23N TO 25N BETWEEN 156W AND 160W...AND FROM 11N TO 19N W OF 166E. $$ .FORECASTER ALMANZA. HONOLULU HI.