The High Seas Forecast for the Central North Pacific

Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

A storm system will shift from eastern Texas into the lower Mississippi Valley Monday with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. A Flood Watch remains in effect. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest Monday into Wednesday. Read More >

037 FZPN40 PHFO 301533 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1700 UTC SUN NOV 30 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 NOV 30 2025. 24 HOUR FORECAST VALID 1200 UTC DEC 01 2025. 48 HOUR FORECAST VALID 1200 UTC DEC 02 2025. .WARNINGS. ...STORM WARNING... .LOW 28N171E 998 MB. WARM FRONT FROM LOW TO 28N178W 26N171W. COLD FRONT FROM LOW TO 25N175E 22N170E 20N160E. LOW AND FRONT MOVING NE 40 KT. WINDS 30 TO 45 KT WITHIN 300 NM S SEMICIRCLE OF LOW. WINDS 20 TO 30 KT ELSEWHERE N OF 22N BETWEEN 175W AND 169E. ISOLATED MODERATE TSTMS WITHIN 150 NM OF LOW AND FRONT N OF 22N. .06 HOUR FORECAST LOW 29N177E 995 MB. WARM MOVED N OF AREA. COLD FRONT FROM LOW TO 28N178W 25N179E 20N168E 19N160E. WINDS 30 TO 50 KT N OF 25N BETWEEN 172W AND 177E. WINDS 20 TO 30 KT ELSEWHERE N OF 22N BETWEEN 169W AND 170E. .24 HOUR FORECAST LOW MOVED N OF AREA. COLD FRONT 30N163W 19N180W 16N171E. WINDS 20 TO 30 KT N OF LINE 30N155W 23N167W 28N177W 26N170E 30N168E. .48 HOUR FORECAST COLD FRONT 30N161W 24N167W 18N180W 15N160E. WINDS 20 TO 25 KT N OF 26N BETWEEN 169W AND 174E...AND FROM 15N TO 24N BETWEEN 180W AND 160E. .SYNOPSIS AND FORECAST. .WEAK STATIONARY FRONT 30N157W 25N161W 21N167W NEARLY STATIONARY AND DISSIPATING. .24 HOUR FORECAST FRONT DISSIPATED. .FRONT 26N140W 27N143W MOVING S 10 KT. .24 HOUR FORECAST WEAK FRONT 22N140W 22N145W. .48 HOUR FORECAST FRONT WEAKENED TO TROUGH 21S140W 20S143W. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 4 TO 6 M N OF LINE 30N149W 14N164W 13N174W 24N166E 30N164E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N146W 09N160W 03N180W 04N160E. .24 HOUR FORECAST SEAS 4 TO 5 M N OF 25N BETWEEN 142W AND 167E. SEAS 2.5 TO 4 M ELSEWHERE OVER FORECAST AREA EXCEPT S OF LINE 24N140W 00N162W...AND S OF 06S W OF 161E. .48 HOUR FORECAST 4 TO 5.5 M N OF LINE 30N164W 23N174W 24N176E 30N171E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N154W 21N162W 10N160E. SEAS 2.5 TO 3 M E OF LINE 30N146W 15N155W 04N167W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 07N140W 05N160W 07N160E. SCATTERED MODERATE TSTMS WITHIN 150 NM OF OF ITCZ W OF 180W. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 120 NM N OF ITCZ E 165W. $$ .FORECASTER ALMANZA. HONOLULU HI.