The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 09/15/2026 08:19:55 AM UTC
                        
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.