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 >

384 FZPN40 PHFO 302205 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC SUN NOV 30 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC NOV 30 2025. 24 HOUR FORECAST VALID 1800 UTC DEC 01 2025. 48 HOUR FORECAST VALID 1800 UTC DEC 02 2025. .WARNINGS. ...STORM WARNING... .LOW 29N177W 996 MB. WARM FRONT 29N170W 30N173W 30N176W TO LOW. COLD FRONT FROM LOW TO 27N178W 25N179W 23N177E 21N173E 19N167E 19N164E 19N160E. LOW MOVING NE 30 KT, FRONT MOVING E 25 KT WINDS 30 TO 50 KT N OF 25N BETWEEN 171W AND 176E. WINDS 20 TO 30 KT ELSEWHERE N OF 22N BETWEEN 166W AND 167E. .24 HOUR FORECAST LOW MOVED N OF AREA. COLD FRONT 30N162W 24N169W 19N180E 17N169E THENCE TROUGH 16N160E. SW WINDS 20 TO 30 KT WITHIN 330 NM E OF FRONT N OF 23N. NW WINDS 20 TO 25 KT N OF A LINE 30N170W 26N180E 30N170E. .48 HOUR FORECAST COLD FRONT 30N160W 22N166W 18N173W 16N177E THENCE TROUGH 16N160E. NW WINDS 20 TO 30 KT NW OF FRONT BETWEEN 169W AND 174W. NE WINDS 20 TO 25 KT WITHIN 420 NM N OF FRONT AND TROUGH W OF 176W. .SYNOPSIS AND FORECAST. .FRONT 25N140W 25N142W 26N145W MOVING S SLOWLY. .24 HOUR FORECAST FRONT BECAME TROUGH 21N140W 22N144W 24N147W. .48 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 30N157W 28N159W 23N168W NEARLY STATIONARY. .24 HOUR FORECAST TROUGH DISSIPATED. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 4 TO 5 M N OF A LINE 30N145W 20N155W 07N164W 08N177W 30N163E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N141W 06N160W 02N180W 06N160E. .24 HOUR FORECAST SEAS 4 TO 5 M N OF 25N BETWEEN 158W AND 167E. SEAS 2.5 TO 4 M ELSEWHERE OVER FORECAST AREA EXCEPT S OF LINE 14N140W 00N156W...AND S OF 06S W OF 170E. .48 HOUR FORECAST 4 TO 6 M N OF A LINE 30N166W 24N174W 23N177E 30N171E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N151W 12N178W 06N160E. SEAS 2.5 TO 3 M E OF LINE 30N146W 15N160W 10N180W 00N180W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 07N140W 06N147W 07N160E. SCATTERED MODERATE TSTMS WITHIN 150 NM OF OF ITCZ W OF 180W. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 150 NM N OF ITCZ E 165W. $$ .FORECASTER TSAMOUS. HONOLULU HI.