High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 232337
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1800 UTC MAY 23 2019.
24 HOUR FORECAST VALID 1800 UTC MAY 24 2019.
48 HOUR FORECAST VALID 1800 UTC MAY 25 2019.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 19S176E 1010 MB MOVING NW SLOWLY. TROUGH FROM 20S174W TO LOW
TO 18S170E MOVING W SLOWLY. E TO SE WINDS 20 TO 30 KT S OF LOW
AND TROUGH. ISOLATED MODERATE TSTMS S OF TROUGH BETWEEN 171W AND
175E.
.24 HOUR FORECAST WEAK LOW 19S175E 1011 MB. TROUGH FROM 21S178E
TO LOW TO 18S168E TO 25S162E. ASSOCIATED WINDS EASED TO 20 KT OR
LESS.
.48 HOUR FORECAST LOW DISSIPATED. WEAK TROUGH FROM 19S165E TO
25S162E.

.LOW 04S161E 1009 MB NEARLY STATIONARY. TROUGH FROM 03S160E TO
LOW TO 09S170E TO 12S179W MOVING SW 10 KT E OF LOW AND NEARLY
STATIONARY ELSEWHERE. SCATTERED MODERATE TO LOCALLY STRONG TSTMS
WITHIN 240 NM OF TROUGH AND LOW.
.24 HOUR FORECAST WEAK LOW 05S160E 1011 MB. TROUGH FROM 01S160E
TO LOW TO 10S166E.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 04S160E TO 07S165E
TO 13S167E.

.COLD FRONT FROM 25S130W TO 23S133W TO 21S138W MOVING SE 15 KT AND
WEAKENING.
.24 HOUR FORECAST FRONT FROM 25S123W TO 23S133W.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM FROM 21S138W TO 22S149W TO 17S154W TO 14S167W TO
09S171W TO 07S178W NEARLY STATIONARY. SCATTERED MODERATE TSTMS
FROM 12S TO 04S BETWEEN 168W AND 180W. ISOLATED MODERATE TSTMS S
OF LINE FROM 10S160W TO 21S143W.
.24 HOUR FORECAST NEW LOW 16S162W 1011 MB. TROUGH FROM 09S179W TO
10S171W TO LOW TO 17S153W TO 22S140W TO 22S134W.
.48 HOUR FORECAST LOW 13S157W 1011 MB. TROUGH FROM 05S175W TO
10S165W TO LOW TO 18S146W THENCE NEW FRONT TO 19S139W TO 25S128W.

.RIDGE FROM 21S120W TO 19S139W TO 01S167W NEARLY STATIONARY.

.WINDS E TO SE WINDS 20 TO 25 KT S OF 17S BETWEEN 154W AND 167W.
.24 HOUR FORECAST SE TO E WINDS 20 TO 25 KT S OF LINE FROM
20S150W TO 18S156W TO 19S171W TO 21S179E.
.48 HOUR FORECAST SE TO E WINDS 20 TO 25 KT S OF LINE FROM
23S132W TO 16S160W TO 17S171W TO 25S179E.

.SEAS 12 TO 14 FT S OF 21S BETWEEN 128W AND 151W. SEAS 8 TO 13 FT
S OF 18S BETWEEN 175W AND 167E. ELSEWHERE SEAS 8 TO 11 FT S OF
LINE FROM 25S122W TO 19S129W TO 11S160W TO 20S175W.
.24 HOUR FORECAST SEAS 12 TO 13 FT S OF 21S E OF 144W. ELSEWHERE
SEAS 8 TO 11 FT S OF LINE FROM 10S120W TO 10S132W TO 17S136W TO
19S168E.
.48 HOUR FORECAST SEAS 8 TO 11 FT S OF LINE FROM 05S120W TO
06S130W TO 17S137W TO 16S170W TO 25S176E.

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

.ISOLATED MODERATE TSTMS N OF 03S BETWEEN 162W AND 169W...AND
WITHIN 60 NM OF 03S150W.

$$

.HONOLULU FORECAST OFFICE.


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