National Weather Service United States Department of Commerce

000
FZPN40 PHFO 260322
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SUN SEP 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 26 2021.
24 HOUR FORECAST VALID 0000 UTC SEP 27 2021.
48 HOUR FORECAST VALID 0000 UTC SEP 28 2021.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.DISSIPATING FRONT FROM 30N165W TO 28N175E TO 29N178E NEARLY
STATIONARY.
.24 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM 16N152W TO 07N159W MOVING NW 10 KT. S WINDS 20 TO 25
KT WITHIN 90 NM SE OF TROUGH...AND E WINDS 20 TO 25 KT ELSEWHERE FROM
16N TO 22N BETWEEN 157W AND 152W.
.24 HOUR FORECAST TROUGH FROM 18N159W TO 13N160W. E WINDS 20 TO 25
KT FROM 17N TO 21N BETWEEN 162W AND 157W.
.48 HOUR FORECAST DISSIPATING TROUGH FROM 18N163W TO 16N166W. E WINDS
20 TO 25 KT FROM 13N TO 20N BETWEEN 157W AND 152W... AND FROM 18N TO
21N BETWEEN 170W AND 160W.

.TROUGH FROM 23N164E TO 18N160E MOVING NW 10 KT. SCATTERED MODERATE
TSTMS FROM 15N TO 25N W OF 167E.
.24 HOUR FORECAST TROUGH FROM 26N162E TO 23N160E. TROUGH FROM 25N TO
29N W OF 167E.
.48 HOUR FORECAST TROUGH MOVED W OF AREA. S TO SE WINDS 20 TO 25 KT
N OF 21N W OF 165E.

.NE TO E WINDS 20 TO 25 KT FROM 20N TO 27N BETWEEN 178W AND 165W...
AND FROM 17N TO 23N BETWEEN 173E AND 180W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 20N TO 27N BETWEEN 178W
AND 162W.
.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF 09N BETWEEN 180W AND
155W.

.RIDGE FROM 22N169E TO 17N165E TO 15N160E MOVING W SLOWLY.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 8 TO 10 FT FROM 11N TO 23N BETWEEN 154W AND 147W.
.24 HOUR FORECAST SEAS 8 TO 9 FT FROM 14N TO 18N BETWEEN 158W AND 155W.
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 24N TO 27N W OF 161E.

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

.SCATTERED MODERATE TSTMS FROM 20N TO 26N BETWEEN 178W AND 172W...
AND N OF 25N W OF 170E.

.ITCZ FROM 09N140W TO 08N147W TO 10N148W...AND FROM 08N164W TO 07N180E
TO 04N162E. SCATTERED MODERATE TSTMS WITHIN 120 NM OF ITCZ W OF 178E.
ISOLATED MODERATE TSTMS WITHIN 150 NM OF ITCZ BETWEEN 175W AND 164W...
AND WITHIN 120 NM OF ITCZ E OF 148W.

$$

.FORECASTER SHIGESATO. HONOLULU HI.