High Seas Forecast
Issued by NWS

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FZPN40 PHFO 271025
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC TUE JUL 27 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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

SYNOPSIS VALID 0600 UTC JUL 27 2021.
24 HOUR FORECAST VALID 0600 UTC JUL 28 2021.
48 HOUR FORECAST VALID 0600 UTC JUL 29 2021.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 14N143W TO 11N147W TO 09N152W MOVING WNW 15 KT. NE TO E
WINDS 20 TO 25 KT FROM 13N TO 18N E OF 147W. ISOLATED MODERATE TSTMS
WITHIN 90 NM N OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 11N140W TO 14N148W TO 10N157W. NE TO E
WINDS 20 TO 25 KT FROM 13N TO 17N E OF 153W.
.48 HOUR FORECAST TROUGH FROM 09N140W TO 13N154W TO 10N161W. NE TO E
WINDS 20 TO 25 KT FROM 13N TO 18N BETWEEN 150W AND 156W.

.TROUGH FROM 29N176E TO 26N173E TO 23N171E MOVING NW 10 KT.
ISOLATED MODERATE TSTMS FROM 19N TO 23N BETWEEN 177W AND 179E.
.24 HOUR FORECAST TROUGH FROM 30N170E TO 27N169E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 11N167E TO 07N169E TO 03N166E NEARLY STATIONARY.
ISOLATED MODERATE TSTMS FROM 10N TO 13N BETWEEN 165E AND 173E...AND
FROM 03N TO 06N BETWEEN 169E AND 175E.
.24 HOUR FORECAST TROUGH DISSIPATED. NEW TROUGH FROM 12N164E TO
07N164E TO 03N162E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 20N174E TO 16N174E TO 13N172E MOVING W 10 KT. ISOLATED
TO LOCALLY SCATTERED MODERATE TSTMS FROM 13N TO 18N BETWEEN 165E AND
174E.
.24 HOUR FORECAST TROUGH FROM 22N171E TO 16N168E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 28N157W TO 23N164W MOVING W 10 KT. ISOLATED MODERATE
TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH FROM 27N176E TO 23N172E.
.48 HOUR FORECAST TROUGH FROM 26N170E TO 24N179E. E TO SE WINDS 20
TO 25 KT WITHIN 120 NM N OF TROUGH.

.E WINDS 20 TO 25 KT FROM 12N TO 23N BETWEEN 150W AND 165W.
.24 HOUR FORECAST OTHER THAN DESCRIBED ABOVE...WINDS EASED TO 20 KT
OR LESS.

.WINDS 20 KT OR LESS REST OF FORECAST AREA.

.48 HOUR FORECAST SEAS 8 TO 9 FT BOUNDED BY 30N173E TO 25N179E TO
25N171E TO 30N169E TO 30N173E.

.SEAS 8 FT OR LESS REST OF FORECAST AREA.

.ITCZ FROM 10N156W TO 09N167W TO 10N175W TO 10N175E. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.

$$

.FORECASTER KINEL. HONOLULU HI.


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