278
FZPS40 PHFO 180329
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC FRI APR 18 2025
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 18 2025.
24 HOUR FORECAST VALID 0000 UTC APR 19 2025.
48 HOUR FORECAST VALID 0000 UTC APR 20 2025.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 25S141W 20S147W THENCE TROUGH 14S158W 12S164W 07S175W
NEARLY STATIONARY. SCATTERED MODERATE TSTMS WITHIN 360 NM E
OF FRONT E OF 160W.
.24 HOUR FORECAST FRONT 25S139W 18S151W THENCE TROUGH 11S164W
07S180W. E TO SE WINDS 20 TO 25 KT S OF LINE 20S146W 17S168W
20S180W.
.48 HOUR FORECAST FRONT 25S136W 20S144W THENCE TROUGH 16S158W
13S175W. E TO SE WINDS 20 TO 30 KT S OF LINE 20S140W 17S160W
20S177W.
.TROUGH 25S178E 17S173E 12S160E MOVING NE SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 120 NM OF TROUGH W OF 175E...AND S
OF 20S BETWEEN 175W AND 178E.
.24 HOUR FORECAST TROUGH 25S178E 14S175E 08S160E.
.48 HOUR FORECAST NEW LOW NEAR 22S178W 1005 MB. TROUGH 25S179E
TO LOW TO 10S170E 11S160E.
.TROUGH 04S160E 07S172E. ISOLATED MODERATE TSTMS WITHIN
180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED
IMMEDIATELY ABOVE.
.SEAS 8 TO 11 FT ENTIRE AREA S OF 21S. SEAS ELSEWHERE 8 TO
11 FT S 0F 07S E OF 130W.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 10S120W 20S135W
17S160W 20S180W 22S160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 22S145W 18S158W
20S174W 25S178W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 10S120W
10S137W 13S160W 20S180W 22S160E.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.
.ITCZ 04S125W 04S136W 06S141W. SCATTERED MODERATE TSTMS FROM
02S TO 08S.
.FORECASTER BIRCHARD. HONOLULU HI.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page