High Seas Forecast
Issued by NWS

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FZPN40 PHFO 221523
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI MAR 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PLEASE SEE HTTPS://OCEAN.WEATHER.GOV/PROPOSED_HIGH_SEAS_TROPICAL.PHP
FOR A PROPOSAL...AND A REQUEST FOR COMMENTS...TO INCREASE
READABILITY OF THE HIGH SEAS FORECAST (WEB ADDRESS LOWERCASE).

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC MAR 22 2024.
24 HOUR FORECAST VALID 1200 UTC MAR 23 2024.
48 HOUR FORECAST VALID 1200 UTC MAR 24 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WEAK COLD FRONT 30N173E 20N160E MOVING E 25 KT. WINDS 20 TO
30 KT N AND W OF FRONT...AND WITHIN 150 NM E OF FRONT.
SEE SEAS BELOW.
.24 HOUR FORECAST FRONT 30N178W 16N160E. SW WINDS 20 TO 25 KT
WITHIN 120 NM W OF FRONT N OF 28N. SEE SEAS BELOW.
.48 HOUR FORECAST FRONT 30N175W 20N173E 18N160E. SW WINDS 20 TO
25 KT WITHIN 90 NM E OF FRONT N OF 26N...AND FROM 15N TO 22N
W OF 170E. SEE SEAS BELOW.

.TROUGH 24N169E 16N160E MOVING E SLOWLY.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE.

.TROUGH 12N147W 07N147W 04N145W MOVING E 10 KT. WINDS 20 TO 25
KT WITHIN 240 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 10N151W 10N147W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.FRONT 28N140W 30N150W MOVING SE 15 KT.
.24 HOUR FORECAST FRONT MOVED E OF FORECAST AREA.

.WINDS N TO NE 20 TO 25 KT FROM 05N TO 22N BETWEEN 180W AND 150W.
.24 HOUR FORECAST WINDS 20 TO 25 KT E OF LINE 25N150W 20N170E
05N180W 00N160W.
.48 HOUR FORECAST WINDS 20 TO 25 KT E OF LINE 25N160W 15N180W
05N180W 00N160W.

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

.SEAS 18 TO 24 FT N OF LINE 30N168E 25N160E. SEAS 12 TO 18 FT
ELSEWHERE N OF LINE 30N170E 22N160E. SEAS 8 TO 12 FT ELSEWHERE
N OF 20N W OF 170W.
.24 HOUR FORECAST SEAS 12 TO 18 FT N OF LINE 20N160E 20N170E
30N180W. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 15N160E 30N175W.
SEAS 8 TO 10 FT FROM 05N TO 25N BETWEEN 175E TO 165W...AND
FROM 05N TO 15N E OF 165W.

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

.ITCZ 03N140W 02N154W. ISOLATED MODERATE TSTMS WITHIN 300 NM
OF ITCZ.

ISOLATED MODERATE TSTMS S OF 05N BETWEEN 175W AND 165E.




$$

.FORECASTER . HONOLULU HI.


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