National Weather Service United States Department of Commerce

913
FZPN40 PHFO 202256
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC MON JAN 20 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20 2020.
24 HOUR FORECAST VALID 1800 UTC JAN 21 2020.
48 HOUR FORECAST VALID 1800 UTC JAN 22 2020.

.WARNINGS.

...GALE WARNING...
.COLD FRONT FROM 30N179W TO 26N177E TO 24N170E TO 23N162E MOVING E 30 KT.
WIND SW 30 TO 35 KT N OF 28N WITHIN 180 NM E OF FRONT. WIND SW 20 TO
30 KT ELSEWHERE N OF 26N WITHIN 360 NM E OF FRONT. ALSO WIND NW 20 TO
25 KT N OF 26N WITHIN W OF 360 NM W OF FRONT. ASSOCIATED SEAS INCLUDED
BELOW.
.24 HOUR FORECAST FRONT FROM 30N165W TO 26N172W TO 24N179E TO 21N171E.
WIND SW 30 TO 35K T N OF 28N WITHIN 360 NM E OF FRONT. WIND SW 20 TO
30 KT ELSEWHERE N OF 26N WITHIN 600 NM E OF FRONT. WIND NW 20 TO 25 KT
N OF 28N WITHIN 360 NM W OF FRONT. ASSOCIATED SEAS INCLUDED BELOW.
.36 HOUR FORECAST FRONT FROM 30N156W TO 26N164W TO 26N172W TO 24N179E.
FRONT DISSIPATING W OF 172W. WIND SW 20 TO 30 KT N OF 26N WITHIN 360 NM
E OF FRONT. WIND NW 20 TO 25 KT N OF 28N WITHIN 360 NM W OF FRONT.
ASSOCIATED SEAS INCLUDED BELOW.
.48 HOUR FORECAST FRONT FROM 30N153W TO 28N158W TO 25N167W. WIND SW
20 TO 30 KT N OF 26N WITHIN 480 NM E OF FRONT. ASSOCIATED SEAS
INCLUDED BELOW.

...GALE WARNING...
.24 HOUR FORECAST NEW COLD FRONT FROM 30N163E TO 26N160E. WINDS SW TO
W 20 TO 30 KT OVER FORECAST WATERS N OF 28N W OF 168E.
.36 HOUR FORECAST FRONT FROM 30N172E TO 26N168E TO 20N160E. WINDS S TO
SW 20 TO 30 KT N OF 26N WITHIN 240 NM E OF FRONT. WINDS W TO NW 30 TO
35 KT N OF 28N WITHIN 420 NM W OF FRONT. WINDS W TO N 20 TO 30 KT
ELSEWHERE OVER FORECAST WATERS N OF FRONT. ASSOCIATED SEAS INCLUDED BELOW.
.48 HOUR FORECAST FRONT FROM 30N177W TO 28N179E TO 25N175E TO 22N168E TO
18N160E. WIND SW 30 TO 35 KT N OF 28N WITHIN 180 NM E OF FRONT. WINDS
S TO SW 20 TO 30 KT ELSEWHERE N OF 25N WITHIN 360 NM E OF FRONT. WINDS
W TO NW 30 TO 40 KT N OF 28N WITHIN 420 NM W OF FRONT. WINDS W TO N
20 TO 30 KT ELSEWHERE OVER FORECAST WATERS N AND NW OF FRONT. ASSOCIATED
SEAS INCLUDED BELOW.

.SYNOPSIS AND FORECAST.

.HIGH NEAR 27N156W 1024 MB. RIDGES FROM HIGH TO 26N140W AND FROM HIGH TO
26N170W TO 22N176E.
.24 HOUR FORECAST HIGH NEAR 27N140W 1025 MB. RIDGE FROM HIGH TO 23N160W.
.48 HOUR FORECAST HIGH E OF FORECAST AREA. RIDGE FROM 27N140W TO 22N156W.

.HIGH JUST W OF FORECAST AREA NEAR 28N158E 1019 MB.
.24 HOUR FORECAST HIGH NEAR 29N178E 1018 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH NEAR 22N168W 1018 MB.
.48 HOUR FORECAST HIGH NEAR 22N162W 1018 MB.

.OTHERWISE WINDS NE TO E 20 TO 30 KT WITHIN AN AREA BOUND BY 20N150W
14N143W 05N163W 08N173E 15N173E 16N166W 20N150W.
.24 HOUR FORECAST WINDS NE TO E 20 TO 25 KT WITHIN AN AREA BOUND BY
18N157W 14N140W 07N155W 09N176E 14N178E 13N165W 18N157W.
.48 HOUR FORECAST WINDS NE TO E 20 TO 25 KT WITHIN AN AREA BOUND BY
18N140W 12N140W 08N160W 09N179W 14N162W 18N140W...AND ALSO FROM 17N TO
09N BETWEEN 160E AND 165E.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 12 TO 18 FT OVER FORECAST WATERS NW OF A LINE FROM 30N179E TO
27N171E. SEAS 8 TO 12 FT ELSEWHERE OVER FORECAST WATERS W AND AND NW OF
A LINE FROM 30N167W TO 20N177E TO 18N160E...AND ALSO WITHIN AN AREA
BOUND BY 30N162W 30N140W 08N140W 06N176E 13N168E 20N178E 20N166W 30N162W.
.24 HOUR FORECAST SEAS 12 TO 21 FT OVER FORECAST WATERS NW OF A LINE
FROM 30N165W TO 24N178W. SEAS 8 TO 12 FT ELSEWHERE NW AND N OF A LINE
FROM 30N153W TO 13N175E TO 13N160E... AND ALSO WITHIN AN AREA BOUND BY
30N150W 30N140W 04N140W 06N176E 14N179E 19N160W 30N150W.
.36 HOUR FORECAST SEAS 12 TO 23 FT OVER FORECAST WATERS NW OF A LINE
FROM 30N156W TO 23N170W AND ALSO NW OF A LINE FROM 30N174E TO 25N160E.
SEAS 8 TO 12 FT ELSEWHERE WITHIN AN AREA BOUND BY 30N160E 03N140W 07N175E
15N166E 12N160E 30N160E.
.48 HOUR FORECAST SEAS 12 TO 23 FT OVER FORECAST WATERS NW OF A LINE
FROM 30N150W TO 22N166W. ALSO SEAS 12 TO 19 FT NW AND N OF A LINE FROM
30N175W TO 25N170E TO 23N160E. SEAS 8 TO 12 FT ELSEWHERE WITHIN AN AREA
BOUND BY 30N160E 03N140W 07N175E 15N166E 12N160E 30N160E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 08N140W TO 07N147W TO 09N155W TO 06N165W TO 07N178W TO 05N173E.
ASSOCIATED TSTMS INCLUDED BELOW.

.OTHERWISE ISOLATED MODERATE TSTMS FROM 12N TO 00N BETWEEN 163E AND 165W.

$$

.FORECASTER BEDAL. HONOLULU HI.