619
FZPN40 PHFO 091530
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI MAY 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC MAY 09 2025.
24 HOUR FORECAST VALID 1200 UTC MAY 10 2025.
48 HOUR FORECAST VALID 1200 UTC MAY 11 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N163E 28N160E MOVING E 25 KT. ISOLATED TSTMS WITHIN 210
NM E OF FRONT.
.24 HOUR FORECAST FRONT NEAR 30N177E 25N176E 21N174E.
.48 HOUR FORECAST FRONT 30N175W 26N179W 20N176E.

.TROUGH 30N170E 26N171E NEARLY STATIONARY.
.24 HOUR TROUGH MERGED WITH FRONT DESCRIBED ABOVE.

.TROUGH 29N142W 26N148W 25N156W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS N OF 24N BETWEEN 143W AND 155W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 TO 25 KT IN AREA BOUNDED BY 30N178W 25N170W 28N163W
26N156W 18N166W 19N155W 15N140W 06N140W 06N173W 16N178W 29N175E
30N178E 30N178W.
.24 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 30N168W
26N149W 24N150W 22N168W 26N170W 26N179W 30N179E 30N168W...AND FROM
16N TO 06N E OF 171W.
.48 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 27N162W
21N149W 19N154W 20N160W 27N163W 27N162W...AND FROM 18N TO 05N
BETWEEN 142W AND 178W.

.WINDS 20 KT OR LESS REMAINDER OF FORECAST AREA.

.SEAS 8 TO 10 FT S OF 29N BETWEEN 150W AND 179W.
.24 HOUR FORECAST SEAS 8 TO 10 FT IN AREA BOUNDED BY 28N171W
26N162W 20N165W 14N140W 05N140W 01N146W 01N166W 05N175W 25N177W
28N171W. SEAS 8 TO 9 FT N OF LINE 30N168E 26N160E.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 19N TO 03N E OF 178E. SEAS
8 TO 9 FT N OF 28N BETWEEN 176E AND 170E. SEAS 8 TO 9 FT FROM 26N
TO 21N BETWEEN 142W AND 163W...AND N OF 26N BETWEEN 177E AND
171E.

.SEAS 8 FT OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 06N140W 04N147W 04N166W 03N175W. ISOLATED MODERATE TSTMS
WITHIN 180 NM W OF 165W...AND WITHIN 90 NM ELSEHWERE.

.ISOLATED MODERATE TSTMS N OF 21N BETWEEN 175W AND 175E.


$$

.FORECASTER PIERCE. HONOLULU HI.