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 >

792 FZPN40 PHFO 120300 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 0500 UTC MON MAY 12 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC MAY 12 2025. 24 HOUR FORECAST VALID 0000 UTC MAY 13 2025. 48 HOUR FORECAST VALID 0000 UTC MAY 14 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH 30N175W 24N178W 18N174W NEARLY STATIONARY. SCATTERED MODERATE TSTMS N OF 25N BETWEEN 175W AND 172W. .24 HOUR FORECAST TROUGH 30N176E 22N175E. .48 HOUR FORECAST WEAK TROUGH 30N173W 25N178E 23N171E. .E TO NE WINDS 20 TO 25 KT FROM 18N TO 05N BETWEEN 174W AND 145W. .24 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 27N TO 21N BETWEEN 161W AND 145W...AND FROM 11N TO 05N BETWEEN 179W AND 156W. .48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS. .ELSEWHERE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 8 TO 10 FT FROM 17N TO 01N BETWEEN 177W AND 143W. .24 HOUR FORECAST SEAS 8 TO 10 FT 16N TO 02N BETWEEN 179E AND 147W. .48 HOUR FORECAST SEAS 8 TO 9 FT FROM 15N TO 02N BETWEEN 173E AND 155W. .ELSEWHERE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 05N140W 02N156W 01N174E. ISOLATED MODERATE TSTMS FROM 04N TO ITCZ BETWEEN 161W AND 157W. $$ .FORECASTER TROTTER. HONOLULU HI.