The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 09/22/2026 01:33:38 PM UTC
                        
280
FZPN40 PHFO 220333
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC TUE SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 22 2026.
24 HOUR FORECAST VALID 0000 UTC SEP 23 2026.
48 HOUR FORECAST VALID 0000 UTC SEP 24 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 12N146W 1007 MB MOVING W 15 KT. WINDS 20 TO 25 KT FROM 15N
TO 22N E OF 151W. SCATTERED MODERATE TSTMS WITHIN 300 NM OF LOW.
.24 HOUR FORECAST LOW 14N152W 1005 MB...POSSIBLE DEVELOPING
TROPICAL CYCLONE...WINDS 20 TO 30 KT FROM 15N TO 21N BETWEEN 145W
AND 156W.
.48 HOUR FORECAST LOW 16N155W 1004 MB...POSSIBLE DEVELOPING
TROPICAL CYCLONE...WINDS 20 TO 30 KT FROM 13N TO 21N BETWEEN 151W
AND 158W.

.TROUGH 27N150W 21N151W 15N148W MOVING W 15 KT.
.24 HOUR FORECAST TROUGH 25N156W 22N157W 18N156W.
.48 HOUR FORECAST TROUGH 28N159W 23N160W 21N160W.

.TROUGH 29N173W 26N177W 22N180W NW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 29N177W 28N180W.
.48 HOUR FORECAST TROUGH W OF AREA.

.SEAS 2.5 TO 4 M FROM 14N TO 24N E OF 152W. SEAS 2.5 TO 3 M FROM
14N TO 19N BETWEEN 152W AND 160W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M FROM 13N TO 26N E OF 157W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M FROM 13N TO 24N BETWEEN 146W
AND 160W.

.WINDS 20 KT OR LESS AND SEAS BELOW 2.5 M OVER THE REMAINDER OF
FORECAST AREA.

.MONSOON TROUGH 09N180W 05N169W 11N163W 09N150W 09N150W 09N140W.
ISOLATED MODERATE TSTMS FROM 02N TO TROUGH E OF 155W.


$$

.FORECASTER ALMANZA. HONOLULU HI.