The High Seas Forecast for the South Pacific

Locally Heavy Rainfall for the Carolinas; Thunderstorms and Fire Weather Concerns for Intermountain West

Heavy rainfall from scattered thunderstorms is expected across the Southwest, Intermountain West, and Plains. Isolated dry thunderstorms may initiate additional fires across the west. The coastal Carolinas may experience flash floods in the coming days due to repeated thunderstorms. Additionally, a wave of intense summer heat will hit the Southern Plains and central Gulf Coast States this week. Read More >

286 FZPS40 PHFO 161525 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1730 UTC MON SEP 16 2024 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC SEP 16 2024. 24 HOUR FORECAST VALID 1200 UTC SEP 17 2024. 48 HOUR FORECAST VALID 1200 UTC SEP 18 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT 25S136W 22S138W 17S144W THENCE TROUGH 14S156W 10S166W 06S175W MOVING E SLOWLY. ISOLATED MODERATE TSTMS S OF 16S BETWEEN 146W AND 132W...AND FROM 10S TO 06S BETWEEN 175W AND 163W. .24 HOUR FORECAST FRONT 25S134W 21S138W THENCE TROUGH 17S139W 15S141W. .48 HOUR FORECAST FRONT 25S133W 20S134W THENCE TROUGH 17S136W. .FRONT 25S168W 22S173W 18S179E THENCE TROUGH 13S170E MOVING E 10 KT. .24 HOUR FORECAST FRONT 25S166W 20S171W 16S177E THENCE TROUGH 12S173E 10S171E 07S170E. .48 HOUR FORECAST FRONT 25S157W 18S160W 12S168W THENCE TROUGH 10S173W 08S177E 06S172E. .TROUGH 11S176E 09S173E 07S172E NEARLY STATIONARY. ISOLATED MODERATE TSTMS FROM 12S TO 07S BETWEEN 169E AND 178E. .24 HOUR FORECAST TROUGH MERGES WITH FRONT ABOVE. .24 HOUR FORECAST NEW TROUGH 06S156W 03S162W. .48 HOUR FORECAST TROUGH 08S157W 03S169W. .WINDS 20 TO 25 KT FROM 21S TO 12S W OF 169E. .24 HOUR FORECAST WINDS 20 TO 25 KT FROM 19S TO 12S W OF 173E. .48 HOUR FORECAST WINDS 20 TO 25 KT FROM 15S TO 11S W OF 170E. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 8 TO 10 FT S OF LINE 25S176E 21S162E 14S163E 12S160E. .24 HOUR FORECAST SEAS 8 TO 11 FT S OF LINE 25S178W 20S171E 22S167E 19S163E 13S165E 11S160E. .48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 25S169W 19S179W 19S177E 15S176E 11S160E. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ISOLATED MODERATE TSTMS S OF 22S BETWEEN 155W AND 144W. $$ .FORECASTER TROTTER. HONOLULU HI.