000
FZPN40 PHFO 212201
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU JAN 21 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JAN 21 2021.
24 HOUR FORECAST VALID 1800 UTC JAN 22 2021.
48 HOUR FORECAST VALID 1800 UTC JAN 23 2021.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N175W TO 25N178E TO 22N170E TO 21N160E. ASSOCIATED
WINDS AND SEAS INCLUDED BELOW.
.24 HOUR FORECAST DISSIPATING FRONT FROM 30N169W TO 23N179E TO 18N165E.
ASSOCIATED WINDS AND SEAS INCLUDED BELOW.
.48 HOUR FORECAST TROUGH FROM 18N179E TO 25N178W TO 30N176W.
ASSOCIATED WINDS AND SEAS INCLUDED BELOW.

.TROUGH FROM 11N168W TO 16N165W TO 19N160W MOVING NNW 20 KT. SCATTERED
MODERATE TSTMS FROM 16N TO 11N BETWEEN TROUGH AND 155W.
.24 HOUR FORECAST TROUGH FROM 16N172W TO 23N168W TO 30N163W. ASSOCIATED
WINDS INCLUDED BELOW.
.48 HOUR FORECAST TROUGH FROM 19N175W TO 25N173W TO 30N172W. ASSOCIATED
WINDS AND SEAS INCLUDED BELOW.

.RIDGE FROM 30N161W TO 26N169W TO 23N178W.
.24 HOUR FORECAST RIDGE FLATTENED OVER FORECAST AREA.

.RIDGE FROM 28N160E TO 27N167E TO 28N177E. ASSOCIATED WINDS INCLUDED
BELOW.
.24 HOUR FORECAST RIDGE FLATTENED OVER FORECAST AREA.

.WINDS NW TO NE 20 TO 30 KT WITHIN AN AREA BOUND BY 30N166E 30N178E
25N178E 18N164E 06N170E 06N160E 23N160E 30N166E. ALSO WINDS E TO NE
20 TO 25 KT FROM 25N TO 17N BETWEEN 162W AND 150W.
.24 HOUR FORECAST WINDS E TO NE 20 TO 30 KT WITHIN AN AREA BOUND BY
30N178E 30N170W 23N173W 17N178E 17N165E 06N165E 06N160E 25N160E
30N178E AND ALSO FROM 28N TO 14N BETWEEN 165W AND 145W.
.48 HOUR FORECAST WINDS SE TO NE 20 TO 30 KT WITHIN AN AREA BOUND
BY 30N178E 30N140W 06N140W 15N165W 21N175W 17N170E 17N160E 25N160E
30N178E.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 12 TO 20 FT OVER FORECAST WATERS N OF A LINE FROM 30N175W TO
25N178E TO 22N170E TO 21N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE
FROM 30N167W TO 18N178E TO08N160E.
.24 HOUR FORECAST SEAS 12 TO 16 FT OVER FORECAST WATERS N OF A LINE
FROM 30N168W TO 23N174W 23N173E. SEAS 8 TO 12 FT ELSEWHERE N OF A
LINE FROM 30N153W 21N162W 11N179W 06N160E.
.48 HOUR FORECAST SEAS 8 TO 12 FT OVER FORECAST WATERS N AND NW OF A
LINE FROM 28N140W 13N158W 06N174W 08N174E 12N160E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 06N140W TO 09N153W TO 07N164W AND FROM 04N170W TO 06N175W TO
03N175E TO 03N165E. ISOLATED MODERATE TSTMS WITHIN 90 NM EITHER SIDE
OF LINE OF CONVERGENCE.

$$

.FORECASTER BEDAL. HONOLULU HI.