High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 201005
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC FRI JAN 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JAN 20 2017.
24 HOUR FORECAST VALID 0600 UTC JAN 21 2017.
48 HOUR FORECAST VALID 0600 UTC JAN 22 2017.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 22S152W 1002 MB MOVING SE 15 KT. TROUGHS FROM LOW TO
25S149W AND FROM LOW TO 19S158W TO 25S166W. CONVERGENT ZONE WITH
WINDS NW TO N 20 TO 30 KT WITHIN 300 NM EITHER SIDE OF A LINE FROM
11S155W TO 18S146W TO 25S146W. SCATTERED MODERATE ISOLATED STRONG
TSTMS WITHIN 100 NM EITHER SIDE OF A LINE FROM 11S165W TO 11S159W
TO 16S148W. SCATTERED MODERATE TO STRONG TSTMS WITHIN 200 AND 420
NM SE OF LOW.
.24 HOUR FORECAST LOW MOVED S OF FORECAST WATERS. CONVERGENT AREA
WITH NW TO N WINDS 20 TO 30 KT WITHIN 150 NM EITHER SIDE OF A LINE
FROM 13S150W TO 25S142W.
.48 HOUR FORECAST CONVERGENT AREA WITH NW TO N WINDS 20 TO 30 KT
WITHIN 150 NM EITHER SIDE OF A LINE FROM 10S155W TO 25S140W.

.SYNOPSIS AND FORECAST.

.LOW NEAR 20S178E 1005 MB MOVING NW SLOWLY. TROUGHS FROM LOW TO
11S173E TO 12S160E...AND FROM LOW TO 19S175W TO 18S170W. CONVERGENCE
ZONE WITH WINDS W TO NW 20 TO 25 KT WITHIN 120 NM EITHER SIDE OF A
LINE FROM 08S165E TO  08S177E TO 13S177W. WIDELY SCATTERED CLUSTERS OF
MODERATE TO STRONG TSTMS WITHIN 150 NM EITHER SIDE OF A LINE FROM
06S160E TO 06S170E TO 08S178E. NUMEROUS MODERATE TO STRONG TSTMS
WITHIN 120 NM EITHER SIDE OF A LINE FROM 10S177W TO 16S175W.
ALSO...ISOLATED TSTMS WITHIN 150 NM OF LOW.
.24 HOUR FORECAST LOW 18S177E 1006 MB. WITH TROUGHS FROM LOW TO
10S169E TO 11S160E AND FROM LOW TO 20S179W TO 20S170W. WINDS
DIMINISHED TO 20 KT OR LESS IN CONVERGENT ZONE.
.48 HOUR FORECAST LOW 19S178E 1006 MB. TROUGH FROM LOW TO 10S170E
TO 11S160E.

.TROUGH 13S123W TO 18S120W MOVING SW SLOWLY. SCATTERED MODERATE
TSTMS BETWEEN 17S AND 12S E OF 128W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 16S134W TO 22S134W MOVING WSW SLOWLY AND DISSIPATING.
ISOLATED TSTMS ALONG TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.36 HOUR FORECAST FRONT 25S165E TO 24S163E TO 24S160E.
.48 HOUR FORECAST FRONT 25S170E TO 24S165E TO 23S160E.

.HIGH 22S163E 1009 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.RIDGE 20S139W TO 08S156W TO 04S180W TO 02S160E NEARLY STATIONARY.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

$$

.FORECASTER LAU. HONOLULU HI.


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