High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 182236
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC MON MAR 18 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAR 18 2024.
24 HOUR FORECAST VALID 1800 UTC MAR 19 2024.
48 HOUR FORECAST VALID 1800 UTC MAR 20 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 21S171W 1009 MB MOVING SE SLOWLY. TROUGHS FROM LOW TO
25S166W AND FROM LOW TO 17S175W 16S180W NEARLY STATIONARY. WINDS 20
TO 25 KT WITHIN 120 NM E OF TROUGH S OF 21S. SEE SEAS BELOW.
ISOLATED MODERATE TSTMS WITHIN 90 NM OF LOW AND TROUGHS.
.24 HOUR FORECAST LOW NEAR 24S166W 1009 MB. TROUGHS FROM LOW TO
25S165W AND FROM LOW TO 17S176W 16S180W. WINDS 20 TO 25 KT S OF
TROUGH W OF 175W. SEE SEAS BELOW.
.48 HOUR FORECAST LOW MOVED S OF FORECAST AREA. NEW LOW NEAR
21S171W 1008 MB. TROUGHS FROM NEW LOW TO 25S165W AND FROM NEW LOW
TO 17S175W 16S180W. WINDS 20 TO 25 KT S OF LOW AND TROUGH W OF
171W. SEE SEAS BELOW.

.LOW NEAR 17S169E 1006 MB MOVING E SLOWLY. TROUGHS FROM LOW TO
16S175E 16S180E AND FROM LOW TO 18S165E TO SECOND LOW NEAR 18S160E
1005 MB. TROUGHS AND SECOND LOW NEARLY STATIONARY. WINDS 20 TO 25
KT S OF 20S W OF 175E. SEE SEAS BELOW. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 120 NM OF LOW AND TROUGH W OF 172E. ISOLATED
MODERATE TSTMS WITHIN 90 NM OF TROUGHS ELSEWHERE.
.24 HOUR FORECAST LOW NEAR 16S175E 1006 MB. TROUGHS FROM LOW TO
16S180E AND FROM LOW TO 18S165E TO SECOND LOW NEAR 18S160E 1005 MB.
WINDS 20 TO 25 KT S OF LOWS AND TROUGHS. SEE SEAS BELOW.
,48 HOUR FORECAST LOW NEAR 17S178E 1008 MB. TROUGHS FROM LOW TO
18S180E AND FROM LOW TO 18S170E 18S160E. SECOND LOW MOVED W OF
FORECAST AREA. WINDS 20 TO 25 KT S OF LOW AND TROUGHS. SEE SEAS
BELOW.

.FRONT 25S130W 18S140W 16S146W MOVING NE SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF FRONT S OF 18S.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S130W 20S132W
15S146W.
.48 HOUR FORECAST TROUGH 25S130W 16S140W 16S147W.

.OTHERWISE...WINDS 20 KT OR BELOW OVER REMINDER OF FORECAST AREA.

.SEAS 8 TO 12 FT S OF LINE 19S160E 22N167E 19S177W 21S168W
25S163W.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 20S160E 18S177E
25S179W.
.48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 19S160E 15S171E
25S170W.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 01S TO 08S BETWEEN 138W AND 161W.
ISOLATED TO SCATTERED MODERATE TSTMS WITHIN 120 NM OF LINE
04S178E 09S170W.

$$

.FORECASTER POWELL. HONOLULU HI.


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