High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 211530
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC TUE MAY 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 21 2019.
24 HOUR FORECAST VALID 1200 UTC MAY 22 2019.
48 HOUR FORECAST VALID 1200 UTC MAY 23 2019.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N164W TO 21N175W TO 18N173E TO 21N160E MOVING E 12 KT
E OF 180W AND NEARLY STATIONARY WITH REST OF FRONT. E WINDS 30 TO
35 KT WITHIN 240 NM N OF FRONT W OF 165E. E WINDS 20 TO 30 KT
ELSEWHERE N OF FRONT W OF 170E AND WITHIN 260 NM N OF FRONT BETWEEN
170E AND 180W. ALSO SW WINDS 20 TO 30 KT BETWEEN FRONT AND 155W N
OF 27N.
.24 HOUR FORECAST FRONT FROM 30N159W TO 25N165W TO 19N176E TO
23N160E. E TO SE WINDS 20 TO 25 KT WITHIN 280 NM N OF FRONT W OF
175E. SW WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT FROM 30N162W TO 24N170W TO 19N176E TO
23N160E. E TO SE WINDS 20 TO 25 KT WITHIN 280 NM N OF FRONT W OF
180W. ALSO...S WINDS 20 TO 25 KT BETWEEN FRONT AND 155W N OF 28N.
SECOND FRONT FROM 30N170W TO 25N174W TO 22N180W. SW WINDS 20 TO 25
KT WITHIN 180 NM E OF FRONT N OF 29N.

.SYNOPSIS AND FORECAST.

.LOW 07N161E 1010 MB MOVING NW SLOWLY. TROUGHS FROM LOW TO 00N173E
NEARLY STATIONARY. WIDELY SCATTERED MODERATE TSTMS S OF 15S W OF
167E.
.24 HOUR FORECAST LOW  MOVED W OF FORECAST WATERS. TROUGH FROM
00N160E TO 05N168E TO 00N176E.
.48 HOUR FORECAST TROUGH FROM 09N160E TO 04N170E.

.RIDGE FROM 30N150W TO 25N160W TO 20N170W NEARLY STATIONARY.

.RIDGE FROM 30N176E TO 26N172W MOVING S SLOWLY.

.E WINDS 20 TO 25 KT FROM 12N TO 22N E OF 150W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 10N TO 20N E OF 150W.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 12N TO 26N E OF 150W.

.SEAS 10 TO 14 FT BETWEEN 20N AND 25N W OF 170E. SEAS 8 TO 10 FT
ELSEWHERE N OF A LINE FROM 30N161W TO 20N180W TO 17N160E. SEAS 8 TO
9 FT BETWEEN 20N AND 11N E OF 150W.
.24 HOUR FORECAST SEAS 8 TO 11 FT IN THE AREA FROM 30N160E TO
20N177E TO 20N160E TO 30N160E. SEAS 8 TO 9 FT BETWEEN 10N AND 15N E
OF 150W.
.48 HOUR FORECAST SEAS 8 TO 11 FT N OF A LINE FROM 30N166W TO
25N175W TO 25N174E 27N170E. SEAS 8 TO 10 FT IN THE AREA FROM
28N160E TO 20N174E TO 22N160E TO 28N160E.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.

.ITCZ FROM 06N140W TO 06N180W. SCATTERED MODERATE TSTMS FROM 02N TO
08N E OF 152W. WIDELY SCATTERED MODERATE TSTMS WITHIN 140 NM OF
REST OF ITCZ.

.SCATTERED MODERATE TSTMS S OF 06N BETWEEN 180W AND 170E.


$$

.FORECASTER LAU. HONOLULU HI.


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