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FZPN40 PHFO 231526
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT MAR 23 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAR 23 2019.
24 HOUR FORECAST VALID 1200 UTC MAR 24 2019.
48 HOUR FORECAST VALID 1200 UTC MAR 25 2019.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 30N172E 1008 MB MOVING NE 15 KT. FRONTS FROM 30N176E TO
22N173E TO 18N168E MOVING ENE 15 KT...AND FROM 30N174W TO 27N171W
MOVING NNE 15 KT. WINDS 20 TO 30 KT N OF 24N BETWEEN 168W AND
174W...AND WINDS 20 TO 25 KT N OF 26N BETWEEN 174W AND 178E.
ISOLATED MODERATE TSTMS N OF A LINE FROM 26N168W TO 24N180E.
.24 HOUR FORECAST LOW AND FRONT MOVED FAR N OF AREA. TROUGH FROM
30N178E TO 20N174E. WINDS 20 TO 25 KT N OF 27N BETWEEN 167W AND
178W.
.48 HOUR FORECAST TROUGH FROM 30N177W TO 20N172E. WINDS DIMINISHED
TO 20 KT OR LESS.

.WEAKENING FRONT FROM 25N140W TO 23N150W TO 22N162W NEARLY
STATIONARY. NE TO E WINDS 20 TO 25 KT WITHIN 150 NM N OF FRONT W OF
153W.
.24 HOUR FORECAST WEAK FRONT FROM 25N140W TO 22N161W. NE TO E WINDS
20 TO 25 KT WITHIN 150 NM N OF FRONT W OF 151W.
.48 HOUR FORECAST FRONT DISSIPATED. WINDS DIMINISHED TO 20 KT OR
LESS.

.TROUGH FROM 05N172E TO 00N172E MOVING W SLOWLY. ISOLATED MODERATE
TSTMS S OF A LINE FROM 09N180E TO 03N164E.
.24 HOUR FORECAST TROUGH FROM 06N170E TO 01N170E.
.48 HOUR FORECAST TROUGH FROM 06N167E TO 01N167E.

.NE TO E WINDS 20 TO 25 KT FROM 03N TO 18N E OF 178W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 05N TO 19N E OF
178W...AND FROM 19N TO 24N BETWEEN 161W AND 170W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 20N BETWEEN
143W AND 160W...AND FROM 04N TO 12N BETWEEN 160W AND 178W.

.24 HOUR FORECAST NEW COLD FRONT FROM 30N162E TO 28N160E. WINDS
20 TO 30 KT N OF 27N W OF 167E.
.48 HOUR FORECAST FRONT FROM 30N178E TO 25N160E. WINDS 20 TO 25 KT
WITHIN 180 NM N OF FRONT W OF 166E.

.24 HOUR FORECAST NEW FRONT FROM 30N141W TO 29N152W TO 30N155W.
.48 HOUR FORECAST WEAKENING FRONT FROM 26N140W TO 23N156W.

.RIDGE FROM 30N155W TO 29N140W MOVING SSE SLOWLY.

.RIDGE FROM 24N168W TO 18N180E TO 16N172E MOVING E SLOWLY...AND
GRADUALLY ERODING FROM THE W.

.RIDGE FROM 27N160E TO 30N164E MOVING E SLOWLY.

.RIDGE FROM 21N160E TO 19N165E MOVING E SLOWLY.

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

.SEAS 12 TO 13 FT N OF 24N E OF 146W. SEAS 8 TO 12 FT ELSEWHERE N
OF 02N E OF 152W. SEAS 8 TO 11 FT N OF 02N BETWEEN 152W AND 163W.
SEAS 8 TO 10 FT N OF 25N BETWEEN 176W AND 176E...AND FROM 03N TO
20N BETWEEN 163W AND 177W.
.24 HOUR FORECAST SEAS 8 TO 13 FT N OF 03N E OF 150W. SEAS 8 TO 11
FT N OF 28N W OF 163E...AND N OF 03N BETWEEN 150W AND 163W. SEAS 8
TO 10 FT FROM 03N TO 26N BETWEEN 163W AND 168W...AND FROM 04N TO
14N BETWEEN 168W AND 178W.
.48 HOUR FORECAST SEAS 8 TO 12 FT NW OF A LINE FROM 30N174E TO
24N160E. SEAS 8 TO 11 FT N OF 02N E OF 155W. SEAS 8 TO 10 FT FROM
04N TO 28N BETWEEN 155W AND 160W...FROM 04N TO 18N BETWEEN 160W
AND 175W.

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

.ITCZ FROM 02N140W TO 02N160W TO 02N180E. SCATTERED MODERATE TO
STRONG TSTMS S OF 08N BETWEEN 164W AND 177W. ISOLATED MODERATE
TSTMS ELSEWHERE WITHIN 90 NM S OF ITCZ...AND ELSEWHERE WITHIN 390
NM N OF ITCZ.

$$

.FORECASTER HOUSTON. HONOLULU HI.


Additional Resources:

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