High Seas Forecast
Issued by NWS

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547
FZPS40 PHFO 222340 CCA
HSFSP

HIGH SEAS FORECAST COR
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC TUE OCT 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 22 2019.
24 HOUR FORECAST VALID 1800 UTC OCT 23 2019.
48 HOUR FORECAST VALID 1800 UTC OCT 24 2019.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 20S138W 1014 MB NEARLY STATIONARY. TROUGHS FROM LOW TO
17S131W AND FROM LOW TO 18S148W TO 18S156W. WINDS NE TO SE 20 TO
30 KT OVER FORECAST WATERS S OF TROUGH AXIS BETWEEN 142W AND 130W.
SCATTERED MODERATE TSTMS WITHIN 180 NM EITHER SIDE OF TROUGH AXIS
BETWEEN 145W AND 135W.
.24 HOUR FORECAST LOW NEAR 20S138W 1013 MB. TROUGHS FROM LOW TO
21S134W TO 22S128W AND FROM LOW TO 18S148W TO 18S156W. WINDS NE TO
SE 20 TO 30 KT OVER FORECAST WATERS S OF TROUGH AXIS BETWEEN 142W
AND 127W.
.48 HOUR FORECAST LOW NEAR 20S138W 1012 MB. TROUGHS FROM LOW TO
19S129W TO 20S120W AND FROM LOW TO 18S148W. WINDS NE TO SE 20 TO
30 KT OVER FORECAST WATERS S OF TROUGH AXIS BETWEEN 140W AND 126W.

.COLD FRONT FROM 25S160W TO 21S164W MOVING E 15 KT THENCE A
STATIONARY FRONT TO 16S169W.
.24 HOUR FORECAST FRONT FROM 25S155W TO 22S161W TO 19S167W.
.48 HOUR FORECAST FRONT FROM 25S152W TO 21S159W TO 19S163W.

.STATIONARY FRONT TO 18S120W TO 14S129W.
.24 HOUR FORECAST FRONT DISSIPATED. TROUGH FROM 14S129W TO 20S120W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH ASSOCIATED WITH LOW
DESCRIBED ABOVE ALONG 20S138W TO 19S129W TO 20S120W.

.24 HOUR FORECAST NEW COLD FRONT NEAR 25S171W.
.48 HOUR FORECAST FRONT FROM 25S162W TO 22S170W.

.TROUGH FROM 06S160E TO 09S168E TO 13S173E TO 17S179E. TROUGH
DISSIPATING N OF 13S AND MOVING E 10 KT S OF 13S. SCATTERED MODERATE
TSTMS WITHIN 270 NM EITHER SIDE OF TROUGH AXIS.
.24 HOUR FORECAST TROUGH FROM 07S175E TO 14S179E TO 19S172W TO
19S167W.
.48 HOUR FORECAST TROUGH FROM 07S175E TO 13S178W TO 19S172W TO
19S163W.

.TROUGH FROM 08S179W TO 14S174W TO 16S169W MOVING W SLOWLY. ISOLATED
TSTMS N OF 14S WITHIN 300 NM EITHER SIDE OF TROUGH AXIS.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.

.OTHERWISE 24 HOUR FORECAST WINDS SE TO E 20 TO 25 KT FROM 12S TO 21S
BETWEEN 160E AND 178E.
.48 HOUR FORECAST WINDS SE TO E 20 TO 25 KT FROM 12S TO 22S BETWEEN
160E AND 178E.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.24 HOUR FORECAST SEAS 8 TO 10 FT OVER FORECAST WATERS S OF A LINE
FROM 25S176W TO 23S178E TO 23S165E.
.48 HOUR FORECAST SEAS 8 TO 10 FT WITHIN AN AREA BOUND BY 16S173E
25S164E 25S176E 21S169E 16S173E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

$$

.FORECASTER BEDAL. HONOLULU HI.



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