The High Seas Forecast for the South 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 >

779 FZPS40 PHFO 271027 HSFSP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 1130 UTC THU NOV 27 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E SYNOPSIS VALID 0600 UTC NOV 27 2025. 24 HOUR FORECAST VALID 0600 UTC NOV 28 2025. 48 HOUR FORECAST VALID 0600 UTC NOV 29 2025. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW NEAR 23S141W 1007 MB MOVING SE 25 KT. TROUGH FROM 25S137W TO LOW TO 21S147W 20S151W MOVING E 25 KT. WINDS 20 TO 25 KT FROM 24S TO 22S BETWEEN 147W AND 138W. ISOLATED MODERATE TSTMS S OF 21S BETWEEN 145W AND 136W. .24 HOUR FORECAST LOW MOVED S OF AREA. TROUGH STRENGTHENS TO FRONT 25S130W 20S135W THENCE TROUGH 17S143W 18S151W. WINDS 20 TO 25 KT S OF 20S BETWEEN 135W AND 124W. .48 HOUR FORECAST FRONT 25S124W 21S128W THENCE TROUGH 17S137W 14S149W. WINDS 20 TO 25 KT S OF 24S E OF 122W. .TROUGH 21S120W 17S130W 11S140W MOVING SW 10 KT. ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH. .24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE. .TROUGH 25S174W 11S179E 04S165E MOVING W 20 KT. SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH N OF 09S. ISOLATED MODERATE TSTMS WITHIN 300 NM OF TROUGH ELSEWHERE S OF 10S. .24 HOUR FORECAST TROUGH 25S165W 16S168W 06S175W. .48 HOUR FORECAST TROUGH 25S159W 17S162W 10S178W. .WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA. .SEAS 2.5 TO 3 M S OF 22S BETWEEN 149W AND 139W. .24 HOUR FORECAST SEAS 2.5 TO 3 M S OF 22S BETWEEN 137W AND 128W. .48 HOUR FORECAST SEAS 2.5 TO 3 M S OF 23S E OF 145W. .SEAS 2.5 M OR LOWER OVER REMAINDER FORECAST AREA. .ISOLATED MODERATE TSTMS N OF 09S W OF 165E. $$ .FORECASTER PIERCE. HONOLULU HI.