The High Seas Forecast for the South Pacific

Heavy Precipitation in the West; Wintry Mix in the North; Fire Weather in the High Plains

Pacific moisture will continue to bring locally heavy coastal/lower elevation rain and heavy mountain snow to the West Coast and portions of the Intermountain West through Monday. A wintry mix will create hazardous travel across the northern Plains and Upper Midwest into early Monday. Dry, gusty winds are resulting in elevated to critical fire weather in the south/central High Plains. Read More >

435 FZPS40 PHFO 050946 RRB HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1130 UTC MON JAN 05 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E SYNOPSIS VALID 0600 UTC JAN 05 2026. 24 HOUR FORECAST VALID 0600 UTC JAN 06 2026. 48 HOUR FORECAST VALID 0600 UTC JAN 07 2026. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW 17S174E 1006 MB. TROUGH 25S175W TO LOW TO 12S173E. LOW AND TROUGH MOVING SW SLOWLY. SCATTERED MODERATE TSTMS WITHIN 120 NM OF LOW AND TROUGH S OF 15S. .24 HOUR FORECAST LOW DISSIPATED. TROUGH 12S175E 17S171E 13S170E. .48 HOUR FORECAST TROUGH 25S175E 19S170E 12S166E. WINDS 20 TO 25 KT S OF TROUGH. .TROUGH 24S120W 21S132W 14S144W MOVING SW SLOWLY. WINDS 20 TO 25 KT S OF TROUGH BETWEEN 140W AND 130W. SCATTERED MODERATE TSTMS FROM 20S TO 16S BETWEEN 139W AND 131W. .24 HOUR FORECAST TROUGH 25S120W 23S133W 15S146W 15S152W. .48 HOUR FORECAST TROUGH 25S130W 20S140W 16S160W. .TROUGH 16S172W 05S177E 05S170E 07S160E MOVING SW SLOWLY. SCATTERED MODERATE TO STRONG TSTMS FROM 20S TO 08S BETWEEN 180W AND 160W. WIDELY ISOLATED MODERATE TSTMS N OF 10S W OF 177W. .24 HOUR FORECAST TROUGH 17S176W 05S173E 06S160E. .48 HOUR FORECAST TROUGH 15S180E 06S170E 06S160E. .WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA. .24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 04S BETWEEN 160W AND 147W. .48 HOUR FORECAST SEAS SUBSIDED TO 2.5 M OR LESS. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .NUMEROUS STRONG TSTMS FROM 12S TO 09S BETWEEN 157W AND 154W. ISOLATED MODERATE TSTMS FROM 19S TO 15S BETWEEN 160W AND 150W. $$ .FORECASTER SHIGESATO. HONOLULU HI.