High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 191025
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC THU OCT 19 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC OCT 19 2017.
24 HOUR FORECAST VALID 0600 UTC OCT 20 2017.
48 HOUR FORECAST VALID 0600 UTC OCT 21 2017.

.WARNINGS.

...GALE WARNING...
.N TO NE WINDS 25 TO 35 KT S OF LINE FROM 21S150W TO 24S157W.
.24 HOUR FORECAST N TO NE WINDS 20 TO 25 KT S OF LINE FROM 21S150W
TO 24S153W.
.48 HOUR FORECAST N TO NE WINDS 20 TO 25 KT S OF 22S BETWEEN 150W
AND 156W.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S166W TO 20S172W TO 13S180E TO 09S170E THENCE TROUGH
TO 07S160E. FRONT MOVING E 10 KT S OF 20S...AND NEARLY STATIONARY
ELSEWHERE. TROUGH NEARLY STATIONARY. E TO SE WINDS 20 TO 25 KT S OF
15S W OF 174E. ISOLATED MODERATE TO LOCALLY STRONG TSTMS WITHIN 150
NM N...AND 90 NM S...OF FRONT AND TROUGH W OF 180E. ISOLATED
MODERATE TSTMS WITHIN 90 NM NE OF FRONT BETWEEN 173W AND 180E.
.24 HOUR FORECAST FRONT FROM 25S161W TO 17S170W TO 13S180E TO
09S170E THENCE TROUGH TO 07S160E. WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT FROM 25S160W TO 18S170W TO 15S180E TO
10S171E THENCE TROUGH TO 08S160E.

.FRONT FROM 15S120W TO 13S130W TO 14S140W TO 15S145W NEARLY
STATIONARY. E TO SE WINDS 20 TO 25 KT S OF 15S BETWEEN 130W AND
150W.
.24 HOUR FORECAST FRONT FROM 15S120W TO 13S130W TO 13S148W.
E TO SE WINDS 20 TO 25 KT FROM 14S TO 23S BETWEEN 130W AND 146W.
.48 HOUR FORECAST FRONT 15S120W TO 13S130W TO 11S148W. E TO SE WINDS
20 TO 25 KT FROM 14S TO 18S BETWEEN 135W AND 148W.

.TROUGH FROM 10S178W TO 16S166W MOVING SW SLOWLY. ISOLATED MODERATE
TO LOCALLY STRONG TSTMS WITHIN 150 NM NE...AND 90 NM SW...OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH FIRST FRONT DESCRIBED ABOVE.

.RIDGE FROM 25S169E TO 21S173E TO 17S179W NEARLY STATIONARY.

.RIDGE FROM 25S143W TO 14S157W TO 06S176W TO 03S163E NEARLY
STATIONARY.

.RIDGE FROM 25S133W TO 18S121W NEARLY STATIONARY.

.SEAS 12 TO 15 FT S OF 23S BETWEEN 150W AND 160W. SEAS 12 TO 14 FT S
OF 24S E OF 124W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE FROM 12S120W
TO 14S142W TO 18S153W TO 24S175W TO 16S174E TO 14S160E. SEAS 8 TO 9
FT FROM 01S TO 06S BETWEEN 146W AND 155W.
.24 HOUR FORECAST SEAS 12 TO 13 FT S OF 23S E OF 125W. SEAS 8 TO 12
FT ELSEWHERE S OF LINE FROM 10S120W TO 12S145W TO 24S162W TO
22S175E.
.48 HOUR FORECAST SEAS 8 TO 11 FT S OF 11S E OF 146W. SEAS 8 TO 9 FT
S OF 20S BETWEEN 161W AND 173W.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER REST OF FORECAST
AREA.

$$

.FORECASTER KINEL. HONOLULU HI.



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