High Seas Forecast
Issued by NWS
Issued by NWS
998 FZPN40 PHFO 142219 HSFNP HIGH SEAS FORECAST NATIONAL WEATHER SERVICE HONOLULU HI 2300 UTC MON SEP 14 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 SEP 14 2026. 24 HOUR FORECAST VALID 1800 UTC SEP 15 2026. 48 HOUR FORECAST VALID 1800 UTC SEP 16 2026. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM NORBERT EAST OF AREA NEAR 19.7N 139.3W 1005 MB AT 2100 UTC SEP 14 MOVING W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE QUADRANT AND 70 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM NE QUADRANT AND 75 NM NW QUADRANT WITH SEAS TO 4 M. OTHERWISE ASSOCIATED WINDS AND SEAS E OF AREA. .12 HOUR FORECAST TROPICAL DEPRESSION NORBERT NEAR 20.0N 141.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M FROM 20N TO 24 E OF 142W. .24 HOUR FORECAST POST-TROPICAL REMNANT LOW NORBERT NEAR 20.2N 143.9W. WINDS 20 TO 30 KT AND SEAS SEAS 2.5 TO 3.5 M FROM 20N TO 25N BETWEEN 140W AND 145W. .48 HOUR FORECAST...LOW DISSIPATED. TROUGH 26N149W 18N150W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M FROM 20N TO 25N BETWEEN 146W AND 151W. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .TROUGH 15N154W 12N154W 11N152W. .24 HOUR FORECAST TROUGH DISSIPATED. .TROUGH 30N148W 21N151W. SECOND TROUGH 30N154W 27N154W. TROUGHS MOVING NW SLOWLY. .24 HOUR FORECAST TROUGH 30N152W 25N153W. SECOND TROUGH DISSIPATED. .48 HOUR FORECAST TROUGH DISSIPATED. .COMPLEX FRONT 30N174W 27N176W 25N180W MOVING SE SLOWLY. SECOND FRONT 30N176W 28N180W MOVING SE 10 KT. TROUGH 30N170W 27N171W 21N180W NEARLY STATIONARY. ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH. .24 HOUR FORECAST SECOND FRONT MERGED WITH FIRST FRONT 30N174W 25N177W 22N180W. TROUGH ABSORBED BY FIRST FRONT. .48 HOUR FORECAST FRONT WEAKENED TO TROUGH AND MOVED W OF AREA. .WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER REMAINDER OF FORECAST AREA. .MONSOON TROUGH 06N180W 09N171W 08N161W 12N140W. ISOLATED MODERATE TSTMS WITHIN 300 NM OF TROUGH. .ISOLATED MODERATE TSTMS S OF 06N E OF 148W. $$ .FORECASTER ALMANZA. HONOLULU HI.