The High Seas Forecast for the Central North Pacific

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

879 FZPN40 PHFO 011513 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1700 UTC TUE APR 01 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1200 UTC APR 01 2025. 24 HOUR FORECAST VALID 1200 UTC APR 02 2025. 48 HOUR FORECAST VALID 1200 UTC APR 03 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW NEAR 30N171W 999 MB MOVING NE SLOWLY. FRONT 30N159W 20N168W 10N178W 05N177E MOVING E SLOWLY. WINDS 20 TO 30 KT IN AREA BOUNDED BY 26N160E 30N168E 30N153W 22N159W 22N173W 26N175W 16N169E 11N176E 06N160E 24N160E. SCATTERED MODERATE TSTMS WITHIN 180 NM OF FRONT. .24 HOUR FORECAST LOW MOVED N OF AREA. FRONT 30N159W 20N165W 17N169W 12N175W. WINDS 20 TO 30 KT N OF LINE 30N154W 25N160W 30N168W. .48 HOUR FORECAST FRONT 30N154W 23N160W 16N169W. WINDS 20 TO 25 KT N OF LINE 30N147W 25N153W 25N158W 29N164W 28N174W 30N173W. .NE TO E WINDS 20 TO 25 KT FROM 18N TO 04N E OF 158W. .24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 21N TO 04N E OF 154W...AND IN AREA BOUNDED BY 25N160E 27N167W 24N174E 16N176E 11N179E 07N173E 07N167E 11N160E 25N160E. .48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 21N TO 04N E OF 144W...AND FROM 23N TO 09N W OF 174W. .WINDS 20 KT OR LESS REMAINDER FORECAST AREA. .SEAS 18 TO 19 FT N OF 29N BETWEEN 172W AND 178W. SEAS 12 TO 18 FT ELSEWHERE N OF LINE 30N171W 20N177E 23N166E 30N168E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 30N158W 24N159W 20N165W 15N173E 12N160E. SEAS 8 TO 10 FT FROM 17N TO 04N E OF 159W. .24 HOUR FORECAST SEAS 12 TO 13 FT IN AREA BOUNDED BY 21N160E 27N172E 25N179E 20N173E 17N166E 20N160E 21N160E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 30N154W 18N167W 23N167W 08N174E 10N160E. SEAS 8 TO 9 FT FROM 20N TO 05N E OF 158W. .48 HOUR FORECAST SEAS 8 TO 12 FT N OF LINE 30N151W 19N172W 10N169W 09N161W 05N173E 06N160E. SEAS 8 TO 10 FT E OF LINE 20N140W 16N150W 11N151W 09N156W 05N156W 03N140W. .SEAS 8 FT OR LOWER REMAINDER FORECAST AREA. .ISOLATED MODERATE TSTMS FROM 10N TO 03N W OF 170E. $$ .FORECASTER PIERCE. HONOLULU HI.