The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 03/28/2025 08:05:46 AM UTC
                        
986
FZPN40 PHFO 272205
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU MAR 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 27 2025.
24 HOUR FORECAST VALID 1800 UTC MAR 28 2025.
48 HOUR FORECAST VALID 1800 UTC MAR 29 2025.

.WARNINGS.

...GALE WARNING...
.TROUGH FROM 30N164E TO 29N163E TO 28N160E MOVING SE 20 KT.
SCATTERED MODERATE TSMTS WITHIN 90 NM E OF TROUGH N OF 28N.
.24 HOUR FORECAST NEW LOW NEAR 27N177E 1013 MB. TROUGH FROM LOW TO
21N176E.
.48 HOUR FORECAST LOW NEAR 29N178W 1000 MB. TROUGH BECAME FRONT
FROM LOW TO 26N172W TO 24N172W TO 16N178E. SW TO SE WINDS 25 TO 35
KT N OF 25N BETWEEN 170W AND 174W. E WINDS 25 TO 35 KT N OF LOW
BETWEEN 170W AND 176E. WINDS 20 TO 30 KT ELSEWHERE WITHIN 420 NM OF
LOW.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N163W TO 26N167W TO LOW NEAR 19N175E 1011 MB THENCE
A TROUGH TO 16N164E. FRONT MOVING E SLOWLY.
.24 HOUR FORECAST FRONT FROM 30N156W TO 28N161W TO 28N165W TO
23N172W THENCE TROUGH TO 16N171W.
.48 HOUR FORECAST FRONT FROM 30N146W TO 28N155W TO 28N162W TO
24N167W TO 23N170W.

.TROUGH FROM 30N156W TO 26N154W TO 23N150W MOVING NE 15 KT.
.24 HOUR FORECAST TROUGH MOVED N OF AREA.

.SE WINDS 20 TO 25 KT N OF 25 BETWEEN 150W AND 154W. NE WINDS 20
TO 25 KT FROM 04N TO 15N E OF 168W.
.24 HOUR FORECAST NE TO E WINDS FROM 04N TO 12N E OF 164W. SW
WINDS 20 TO 25 KT N OF 28N BETWEEN 145W AND 149W.
.48 HOUR FORECAST NE TO E WINDS FROM 04N TO 12N E OF 171W.

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

.SEAS 8 TO 12 FT N OF A LINE FROM 25N140W TO 28N149W TO 30N161W.
SEAS 8 TO 9 FT FROM 05N TO 10N E OF 155W.
.24 HOUR FORECAST SEAS 8 TO 9 FT N OF 18N E OF 143W.
.48 HOUR FORECAST SEAS 8 TO 11 FT N OF 26N BETWEEN 171W AND 179W.
SEAS 8 TO 9 FT E OF 07N FROM 04N TO 10N.

.SEAS 8 FT OR LOWER OVER REMAINDER OF THE FORECAST AREA.

.ITCZ FROM 05N140W TO 05N148W TO 05N154W TO 02N162W TO 01N176W.
ISOLATED MODERATE TSTMS WITHIN 60 NM OF ITCZ E OF 150W.

.ISOLATED MODERATE TSTMS WITHIN 120 NM OF 03N174E.


$$

.FORECASTER TSAMOUS. HONOLULU HI.