High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 191031
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC MON FEB 19 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 19 2018.
24 HOUR FORECAST VALID 0600 UTC FEB 20 2018.
48 HOUR FORECAST VALID 0600 UTC FEB 21 2018.

.WARNINGS.

...GALE WARNING...
.LOW 19S154W 1004 MB MOVING SE SLOWLY. TROUGH FROM 25S146W TO LOW
TO 15S170W TO 14S161E NEARLY STATIONARY. WINDS 25 TO 35 KT WITHIN
90 NM E OF LOW. WINDS 20 TO 25 KT ELSEWHERE S OF 16S BETWEEN 150W
AND 155W. SCATTERED MODERATE TO STRONG TSTMS S OF 08S BETWEEN 148W
AND 160W...AND FROM 08S TO 12S BETWEEN 160W AND 172W.
.24 HOUR FORECAST LOW S OF AREA. TROUGH FROM 25S158W TO NEW LOW
16S165W 1004 MB TO 15S180W TO 15S170E. WINDS 20 TO 30 KT S OF 15S
BETWEEN 150W AND 154W.
.48 HOUR FORECAST LOW 13S169W 1005 MB. TROUGH FROM 25S160W TO LOW
TO 10S165E. WINDS EASED TO 20 KT OR LESS.

.SYNOPSIS AND FORECAST.

.RIDGE FROM 20S130W T0 12140W TO 05170W TO 01S170E MOVING S
SLOWLY.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 8 TO 14 FT S OF 15S BETWEEN 150W AND 157W. SEAS 8 TO 10 FT
S OF 20S W OF 170W.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF 18S BETWEEN 149W AND 157W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 23S W OF 173E.

.SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS N OF 12S W OF 180W...AND FROM 12S TO 20S
BETWEEN 130W AND 147W.

$$

.FORECASTER MORRISON. HONOLULU HI.



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