The High Seas Forecast for the Central North Pacific

Severe Thunderstorm, Flooding, and Winter Weather Threats on Tuesday

Scattered severe thunderstorms are forecast Tuesday from the southern Plains into the southern Great Lakes vicinity. Thunderstorms may also produce heavy to excessive rain that could pose a flooding threat from central Texas into southern Oklahoma and northern Missouri into southern Michigan. A heavy wintry mix is forecast for the Great Lakes into northern Maine. Read More >

468 FZPN40 PHFO 092239 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC MON MAR 09 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W SYNOPSIS VALID 1800 UTC MAR 09 2026. 24 HOUR FORECAST VALID 1800 UTC MAR 10 2026. 48 HOUR FORECAST VALID 1800 UTC MAR 11 2026. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FRONT 30N163W 25N165W 20N170W AND TROUGH 28N163W 25N162W 20N165W. FRONT AND TROUGH MOVING E 5 INCREASING TO 15 KT. WINDS 20 TO 30 KT N OF 22N BETWEEN 180W AND FRONT. SCATTERED TO NUMEROUS STRONG TSTMS WITHIN 120NM OF FRONT AND TROUGH. .24 HOUR FORECAST FRONT 30N162W 25N165W 22N166W. TROUGH ABSORBED BY FRONT. WINDS 20 TO 30 KT N OF 21N BETWEEN 180W AND FRONT. .48 HOUR FORECAST FRONT 30N159W 25N160W 21N163W. WINDS 20 TO 30 KT N OF 20N BETWEEN 180W AND FRONT. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 4 TO 5 M N OF 23N W OF 170W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 15N180W 20N170W 20N160W 30N150W. .24 HOUR FORECAST SEAS 4 TO 5 M N OF 24N W OF 172W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 17N180W 17N170W 20N165W 30N158W. .48 HOUR FORECAST SEAS 4 TO 5 M N OF 22N W OF 173W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 17N180W 17N170W 20N160W 25N155W 30N155W. .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. $$ .FORECASTER PECHACEK. HONOLULU HI.