High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 231533
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC THU MAY 23 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 23 2019.
24 HOUR FORECAST VALID 1200 UTC MAY 24 2019.
48 HOUR FORECAST VALID 1200 UTC MAY 25 2019.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.STATIONARY FRONT FROM 30N163W TO 23N171W TO 19N179E TO 18N166E TO
20N160E. COLD FRONT FROM 30N170W TO 26N179W TO 26N173E MOVING SE 15
KT WILL MERGE WITH STATIONARY FRONT. SE TO S WINDS 20 TO 30 KT N OF
A LINE FROM 29N154W TO 28N161W TO 29N164W. SW WINDS 20 TO 25 KT
WITHIN 120 NM SE OF COLD FRONT N OF 28N. WINDS 20 TO 25 KT BETWEEN
STATIONARY FRONT AND A LINE FROM 28N160E TO 22N171E. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF STATIONARY FRONT.
.24 HOUR FORECAST FRONT FROM 30N163W TO 24N169W TO 20N176W TO
19N177E TO 18N164E TO 20N160E. WINDS 20 TO 30 KT N OF 26N BETWEEN
152W AND 161W. E TO SE WINDS 20 TO 25 KT WITHIN 240 NM N OF FRONT W
OF 165E.
.48 HOUR FORECAST FRONT FROM 30N158W TO 23N165W TO 22N171W...AND
FROM 18N174E TO 18N164E TO 20N160E. NEW TROUGH FROM 22N178E TO
19N176E DEVELOPING. NE TO E WINDS 20 TO 30 KT FROM 26N TO 22N
BETWEEN 175W AND 178E...AND FROM 25N TO 21N BETWEEN TROUGH AND 172E.
SE WINDS 20 TO 25 KT WITHIN 60 NM SE OF FRONT N OF 29N.

.TROUGH FROM 04N160E TO LOW 03N167E 1011 MB TO 01N175E NEARLY
STATIONARY. ISOLATED MODERATE TSTMS S OF 13N W OF 180E.
.24 HOUR FORECAST TROUGH FROM 04N160E TO 05N165E TO 00N171E. LOW
DISSIPATED.
.48 HOUR FORECAST TROUGH FROM 03N160E TO 00N167E.

.RIDGE FROM 30N150W TO 23N165W NEARLY STATIONARY.

.RIDGE FROM 30N164E TO 27N166E TO 25N169E MOVING E 25 KT.

.SE TO E WINDS 20 TO 25 KT BETWEEN 27N AND A LINE FROM 22N157W TO
20N154W TO 20N147W. NE TO E WINDS 20 TO 25 KT FROM 23N TO 06N E OF
147W...AND FROM 18N TO 10N BETWEEN 147W AND 155W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 18N TO 11N BETWEEN
140W AND 160W.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

.SEAS 8 TO 12 FT N OF A LINE FROM 30N166W TO 26N174W TO 25N174E TO
27N170E. SEAS 8 TO 10 FT IN AREA BOUNDED BY 27N160E 22N170E 19N171E
19N169E 22N160E 27N160E. SEAS 8 TO 9 FT E OF A LINE FROM 23N148W TO
16N152W TO 13N142W...AND FROM 14N AND 10N BETWEEN 150W AND 155W.
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF A LINE FROM 30N158W TO
17N175E...AND FROM 23N TO 11N E OF 153W. SEAS 8 TO 9 FT IN AREA
BOUNDED BY 25N160E 22N168E 25N175E 17N175E 21N160E 25N160E.
.48 HOUR FORECAST SEAS 8 TO 12 FT IN AREA ENCLOSED BY 20N170E
27N175W 22N175W 19N178E 27N171E 20N170E. SEAS 8 TO 10 FT FROM 19N TO
07N BETWEEN 143W AND 158W. SEAS 8 TO 9 FT N OF A LINE FROM 30N156W
TO 22N173W TO 22N175W.

.WINDS 20 KT OR LESS...SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 04N140W TO 01N164W. ISOLATED MODERATE TSTMS S OF 09N E OF
170W.

.ISOLATED MODERATE TO STRONG TSTMS FROM 12N TO 03N BETWEEN 170W AND
180W.

$$

.FORECASTER NINETY ONE. HONOLULU FORECAST OFFICE.


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