High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 222250
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC WED MAR 22 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 22 2017.
24 HOUR FORECAST VALID 1800 UTC MAR 23 2017.
48 HOUR FORECAST VALID 1800 UTC MAR 24 2017.

.WARNINGS.

...GALE WARNING...
.COLD FRONT FROM 30N166E TO 27N164E TO 25N160E. FRONT MOVING
E 35 KT N OF 27N AND SE 25 KT S OF 27N. WIND SW 30 TO 40 KT
N OF 27N WITHIN 240 NM E OF FRONT. WIND W 30 TO 45 KT N OF 27N
WITHIN 660 NM W OF FRONT. WINDS S TO W 20 TO 30 KT ELSEWHERE
N OF A LINE FROM 27N179E TO 19N160E. SCATTERED MODERATE TO STRONG
TSTMS N OF 27N WITHIN 360 NM E OF FRONT. ISOLATED MODERATE TSTMS
WITHIN 180 NM E OF FRONT S OF 27N.
.24 HOUR FORECAST FRONT FROM 30N179W TO 25N174E TO 21N169E TO
18N160E. WIND SW 30 TO 35 KT N OF 27N WITHIN 240 NM E OF FRONT.
WIND W TO NW 30 TO 40 KT N OF 29N WITHIN 660 NM W OF FRONT. WINDS
SW TO NW 20 TO 30 KT ELSEWHERE N OF A LINE FROM 30N170W TO 24N175E
TO 29N160E.
.48 HOUR FORECAST FRONT FROM 30N171W TO 25N178W TO 21N171E TO
17N160E. WINDS SW TO W 20 TO 30 KT N OF 29N N OF 27N BETWEEN
165E AND 168W.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N162W TO 27N169W MOVING ENE 25 KT THENCE A
DEVELOPING WARM FRONT TO 27N177W MOVING NE 15 KT. FRONT MOVING
ENE 25 KT N OF 27N AND NE 15 KT W 169W. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 300 NM N OF FRONTAL BOUNDARY. ISOLATED MODERATE
TO STRONG TSTMS WITHIN 150 NM SE OF FRONT.
.24 HOUR FORECAST FRONT FROM 30N148W TO 29N155W TO 30N162W.
.48 HOUR FORECAST DISSIPATING FRONT FROM 28N140W TO 28N150W.

.DEVELOPING HIGH APPROACHING FORECAST AREA FROM W.
.48 HOUR FORECAST HIGH NEAR 26N166E 1018 MB.

.RIDGE FROM 29N140W TO 26N151W TO 25N165W.
.24 HOUR FORECAST RIDGE FROM 26N140W TO 27N159W.
.48 HOUR FORECAST RIDGE FLATTENED OVER FORECAST WATERS.

.RIDGE FROM 22N179W TO 17N160E.
.24 HOUR FORECAST RIDGE FROM 26N163W TO 17N172W.
.48 HOUR FORECAST RIDGE FROM 30N152W TO 26N163W TO 22N174W.

.OTHERWISE WINDS E TO NE 20 TO 25 KT FROM 13N TO 03N BETWEEN
160W AND 140W.
.24 HOUR FORECAST WINDS E TO NE 20 TO 25 KT FROM 15N TO 05N
BETWEEN 155W AND 140W.
.48 HOUR FORECAST WINDS E TO NE 20 TO 25 KT FROM 15N TO 05N BETWEEN
165W AND 145W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 15 TO 25 FT NW OF A LINE FROM 30N167E TO 26N160E...EXCEPT
SEAS 25 TO 32 KT NW OF A LINE FROM 30N164E TO 28N160E. SEAS 8 TO
15 FT ELSEWHERE NW OF A LINE FROM 30N171E TO 24N160E.
.12 HOUR FORECAST SEAS 15 TO 25 FT NW OF A LINE FROM 30N170E TO
24N160E...EXCEPT SEAS 25 TO 32 FT NW OF A LINE FROM 30N167E
TO 28N164E. SEAS 8 TO 15 FT ELSEWHERE NW OF A LINE FROM 30N177W TO
24N174E TO 19N160E.
.24 HOUR FORECAST SEAS 15 TO 25 FT WITHIN A POLYGON BOUND BY
30N160E 30N176E 22N164E 28N160E 30N160E...EXCEPT SEAS 25 TO
30 FT NW OF A LINE FROM 30N174E TO 28N171E. SEAS 8 TO 15 FT
ELSEWHERE NW OF A LINE FROM 30N172W TO 17N167E TO 17N160E.
.36 HOUR FORECAST SEAS 15 TO 25 FT WITHIN A POLYGON BOUND BY
30N164E 30N177W 21N170E 30N164E. SEAS 8 TO 15 FT ELSEWHERE W AND
NW OF A LINE FROM 30N169W TO 12N166E.
.48 HOUR FORECAST SEAS 15 TO 22 FT WITHIN A POLYGON BOUND BY
30N170E 30N172W 22N177E 30N170E. SEAS 8 TO 15 FT ELSEWHERE W AND
NW OF A LINE FROM 30N165W TO 10N179E.

.OTHERWISE SEAS 8 TO 9 FT FROM 12N TO 04N BETWEEN 155W AND 140W.
.24 HOUR FORECAST SEAS 8 TO 10 FT FROM 13N TO 04N BETWEEN
162W AND 140W. ALSO SEAS BUILDING TO 8 TO 9 FT N OF 29N BETWEEN
152W AND 142W.
.48 HOUR FORECAST SEAS 8 TO 11 FT FROM 14N TO 05N BETWEEN 172W
AND 140W. ALSO SEAS 8 TO 10 FT NW OF A LINE FROM 29N140W TO 24N148W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 06N140W TO 02N159W TO 04N178W TO 06N170E TO 06N160E.
SCATTERED STRONG TSTMS WITHIN 320 NM N OF ITCZ BETWEEN 178E AND 170W.
ISOLATED MODERATE TO STRONG TSTMS ELSEWHERE WITHIN 180 NM OF ITCZ.

.ITCZ FROM 04N140W TO 02N155W TO 03N179W...AND FROM 07N176E TO
06N160E. ISOLATED MODERATE TSTMS FROM 03N TO 07N BETWEEN 162E AND
167E...FROM 03N TO 05N BETWEEN 172W AND 179W...AND ELSEWHERE WITHIN
75 NM N...AND 45 NM S...OF ITCZ E OF 172W.

$$

.FORECASTER BEDAL. HONOLULU HI.


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