948
FZPS40 PHFO 182231
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC THU JUL 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
JULY 29 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE OFFSHORE AND HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP


SECURITE

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1800 UTC JUL 18 2024.
24 HOUR FORECAST VALID 1800 UTC JUL 19 2024.
48 HOUR FORECAST VALID 1800 UTC JUL 20 2024.

.WARNINGS.

...GALE WARNING...
.LOW 25S169E 1006 MB MOVING SE 15 KT. FRONT FROM LOW TO 20S167E
11S164E MOVING E 15 KT. WINDS 30 TO 35 KT WITHIN 180 NM NE
QUADRANT OF LOW. WINDS 20 TO 30 KT ELSEWHERE WITHIN 300 NM NE
QUADRANT OF LOW. WINDS 20 TO 25 KT S AND W OF FRONT. ISOLATED
MODERATE TSTMS WITHIN 210 NM NE QUADRANT OF LOW AND WITHIN 60 NM
OF FRONT N OF 13S.
.12 HOUR FORECAST LOW MOVED S OF AREA. FRONT FROM 25S176E 21S174E
16S170E 10S160E. WINDS 30 TO 35 KT S OF LINE 25S178E 21S173E
25S170E. WINDS 20 TO 30 KT ELSEWHERE S OF LINE 25S178W 16S170E
25S160E. WINDS 20 TO 25 KT W OF FRONT N OF 16S.
.24 HOUR FORECAST FRONT 25S177W 20S178E 14S175E THENCE TROUGH
13S170E 07S160E. WINDS 20 TO 30 KT S OF LINE 25S174W 20S180E
25S168E. WINDS 20 TO 25 KT W OF TROUGH N OF 13S.
.48 HOUR FORECAST FRONT 25S171W 20S177W THENCE TROUGH 18S170E
11S160E. WINDS EASED TO 20 KT OR LESS.

...GALE WARNING...
.FRONT 25S146W 21S157W MOVING ENE 35 KT. WINDS 20 TO 30 KT S OF
LINE 25S130W 20S150W 25S165W.
.12 HOUR FORECAST FRONT 25S138W 23S140W 19S150W 18S158W. WINDS 30
TO 35 KT WITHIN 120 NM E OF FRONT S OF 23S. WINDS 20 TO 30 KT
ELSEWHERE S OF LINE 25S127W 20S136W 18S150W 25S160W.
.24 HOUR FORECAST FRONT 25S134W 19S144W 16S155W. WINDS 20 TO 30
KT WITHIN 420 NM E OF FRONT S OF 19S.
.48 HOUR FORECAST FRONT 25S128W 20S133W 13S147W. WINDS 20 TO 30
KT WITHIN 360 NM E OF FRONT S OF 20S.

.SYNOPSIS AND FORECAST.

.FRONT 25S133W 22S140W 17S152W NEARLY STATIONARY. WINDS 20 TO 25
KT WITHIN 120 NM N OF FRONT S OF 20S. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF FRONT S OF 23S.
.12 HOUR FORECAST FRONT MERGED WITH FRONT AS DESCRIBED ABOVE. SEE
WINDS ABOVE.

.TROUGH 10S164E 04S160E NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED IN FIRST
GALE WARNING ABOVE.

.48 HOUR FORECAST WINDS 20 TO 25 KT S OF 15S BETWEEN 140W AND
160W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 12 FT S OF LINE 25S120W 20S135W 21S150W 25S165W...AND
S OF 22S W OF 174E.
.24 HOUR FORECAST SEAS 12 TO 14 FT S OF LINE 25S132W 22S136W
25S168W...AND S OF LINE 25S178E 22S175E 25S172E. SEAS 8 TO 12 FT
ELSEWHERE S OF LINE 25S130W 19S140W 19S150W 25S160W...AND S OF
LINE 25S176W 19S172E 25S163E. SEAS 8 TO 10 FT S OF 09S E OF 130W.
.48 HOUR FORECAST SEAS 12 TO 13 FT S OF LINE 25S130W 23S137W
25S140W. SEAS 8 TO 12 FT ELSEWHERE S OF 18S E OF 160W...AND S OF
LINE 25S173W 19S178E 25S171E. SEAS 8 TO 9 FT FROM 06S TO 18S E OF
128W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ISOLATED MODERATE TSTMS N OF 06S BETWEEN 175W AND 170E.

$$

.FORECASTER WROE. HONOLULU HI.