High Seas Forecast
Issued by NWS
Issued by NWS
941 FZPN40 PHFO 150318 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0500 UTC SUN SEP 15 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC SEP 15 2024. 24 HOUR FORECAST VALID 0000 UTC SEP 16 2024. 48 HOUR FORECAST VALID 0000 UTC SEP 17 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N164W 25N166W MOVING W 10 KT. ISOLATED MODERATE TSTMS WITHIN 180 NM E OF TROUGH. .24 HOUR FORECAST TROUGH 30N170W TO 27N171W. .48 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 30N174E 25N174E MOVING W 15 KT. SCATTERED MODERATE TSTMS WITHIN 210 NM E OF TROUGH AND 120 NM W OF TROUGH. .24 HOUR FORECAST TROUGH DISSIPATED. .WINDS 20 TO 25 KT FROM 11N TO 16N BETWEEN 176W AND 152W. .24 HOUR FORECAST WINDS 20 TO 30 KT FROM 11N TO 17N E OF 156W...AND FROM 10N TO 15N BETWEEN 170W AND 162W. .48 HOUR FORECAST WINDS 20 TO 30 KT FROM 11N TO 20N E OF 164W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 11 FT FROM 10N TO 16N BETWEEN 165W AND 149W. .24 HOUR FORECAST SEAS 8 TO 10 FT FROM 10N TO 15N BETWEEN 169W AND 158W. SEAS 8 TO 9 FT FROM 11N AND 17N E OF 150W. .48 HOUR FORECAST SEAS 8 TO 10 FT FROM 10N TO 19N E OF 156W. SEAS 8 TO 9 FT FROM 11N TO 15N BETWEEN 175W AND 170W. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .MONSOON TROUGH 11N140W 12N148W 10N154W. ITCZ 10N156W 09N170W 08N179W 10N165E. SCATTERED MODERATE TSTMS WITHIN 180 NM OF EITHER SIDE OF TROUGH W OF 179E. ISOLATED MODERATE TSTMS WITHIN 120 NM ELSEWHERE ALONG ITCZ AND TROUGH W OF 148W. .ISOLATED MODERATE TSTMS FROM 11N TO 16N BETWEEN 178W AND 174W. $$ .FORECASTER PIERCE. HONOLULU HI.