High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 241105
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC MON JUL 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC JUL 24 2017.
24 HOUR FORECAST VALID 0000 UTC JUL 25 2017.
48 HOUR FORECAST VALID 0000 UTC JUL 26 2017.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 25S142W 1014 MB MOVING W SLOWLY. FRONT FROM LOW TO
22S139W 20S142W 19S149W NEARLY STATIONARY. WINDS 30 TO 40 KT
S OF LINE 18S120W 22S138W 25S139W. WINDS 20 TO 30 KT ELSEWHERE
S OF LINE 00S120W 25S140W. SEE SEAS BELOW. ISOLATED MODERATE
TSTMS S OF 22S BETWEEN 130W AND 138W.
.24 HOUR FORECAST LOW 25S146W 1015 MB. FRONT 25S139W 19S143W.
WINDS 20 TO 30 KT S OF LINE 04S120W 10S130W 14S135W 25S138W.
SEE SEAS BELOW.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH 25S138W 20S142W.
WINDS 20 TO 25 KT S OF 20S E OF 135W. SEE SEAS BELOW.

.SYNOPSIS AND FORECAST.

.FRONT 25S165W 22S171W 18S178W THENCE TROUGH TO 07S160E. FRONT
MOVING E 15 KT ALONG 25S...BECOMING NEARLY STATIONARY N OF 20S.
TROUGH NEARLY STATIONARY. SE WINDS 20 TO 25 KT FROM 08S TO 15S W
OF 178E. SEE SEAS BELOW. SCATTERED MODERATE TSTMS WITHIN 300 NM
NE OF TROUGH W OF 171E.
.24 HOUR FORECAST FRONT 25S163W 22S170W 18S177W THENCE TROUGH TO
09S160E. E TO SE WINDS 20 TO 25 KT FROM 09S TO 16S W OF 178E.
SEE SEAS BELOW.
.48 HOUR FORECAST FRONT 25S160W 20S171W 15S180W THENCE TROUGH TO
09S160E. E TO SE WINDS 20 TO 25 KT FROM 07S TO 19S W OF 175E.
SEE SEAS BELOW.

.RIDGE 23S160E 21S178W NEARLY STATIONARY.

.RIDGE 25S156W 22S164W 20S172W MOVING E SLOWLY.

.SEAS 18 TO 21 FT S OF 24S BETWEEN 135W AND 138W. SEAS 12 TO 18 FT
ELSEWHERE S OF LINE 15S120W 15S125W 25S141W. SEAS 8 TO 12 FT
ELSEWHERE ELSEWHERE S OF LINE 05S120W 05S135W 08S140W 20S140W
25S150W. SEAS 8 TO 10 FT S OF LINE 00S160W 00S175W 08S160E.
.24 HOUR FORECAST SEAS 12 TO 14 FT S OF 24S BETWEEN 132W AND 138W.
SEAS 8 TO 12 FT ELSEWHERE S OF LINE 03S120W 03S130W 08S140W
21S140W 15S163W 20S168W 25S165W. SEAS 8 TO 9 FT W OF LINE 03S175W
18S177E.
.48 HOUR FORECAST SEAS 8 TO 10 FT S OF LINE 04S120W 02S130W
04S141W 20S140W 19S153W 25S161W. SEAS 8 TO 9 FT W OF 177E BETWEEN
07S TO 15S.

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

.SCATTERED MODERATE TSTMS N OF 05S BETWEEN 177W AND 175E.

$$

.FORECASTER BIRCHARD. HONOLULU HI.



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