FZPN40 PHFO 200334
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED MAY 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAY 20 2026.
24 HOUR FORECAST VALID 0000 UTC MAY 21 2026.
48 HOUR FORECAST VALID 0000 UTC MAY 22 2026.

.WARNINGS.


.NONE.
   
.SYNOPSIS AND FORECAST.

.TROUGH 30N170W 28N172W 19N174W MOVING W 10 KT.
.24 HOUR FORECAST WEAK TROUGH 30N172W 27N177W 20N178W.
.48 HOUR FORECAST TROUGH 30N177W 29N180W.

.WINDS 20 TO 25 KT E OF LINE 28N152W 19N160W 10N170W.
.24 HOUR FORECAST WINDS 20 TO 25 KT E OF LINE 27N157W 14N180W 
07N180W.
.48 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 18N180W 
30N151W 30N140W 09N140W 07N180W 18N180W. 

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 2.5 TO 3.5 M E OF LINE 30N151W 14N165W 09N167W.
.24 HOUR FORECAST SEAS 2.5 TO 3.5 M E OF LINE 28N152W 15N170W 
06N170W. 
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M IN AREA BOUNDED BY 14N180W 
25N160W 27N140W 06N140W 06N155W 07N180W 14N180W. 

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 06N140W 05N160W 02N180W. ISOLATED MODERATE TSTMS FROM 01N 
TO 08N BETWEEN 155W AND 177W.


$$

.FORECASTER ALMANZA. HONOLULU HI.