000
FZPN40 PHFO 180334
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 18 2019.
24 HOUR FORECAST VALID 0000 UTC SEP 19 2019.
48 HOUR FORECAST VALID 0000 UTC SEP 20 2019.

.WARNINGS.

...GALE WARNING...
.LOW 17N165W 1006 MB MOVING N 15 KT. WINDS 20 TO 30 KT WITHIN 240
NM NE AND E QUADRANTS OF LOW. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 210 NM OF LOW. ISOLATED MODERATE TSTMS ELSEWHERE FROM 07N
TO 21N BETWEEN 158W AND 170W.
.24 HOUR FORECAST LOW 23N165W 1005 MB. WINDS 25 TO 35 KT FROM
24N TO 30N BETWEEN 171W AND 164W. WINDS 20 TO 25 KT WITHIN 450
NM NW SEMICIRCLE OF LOW...AND 180 NM ELSEWHERE.
.36 HOUR FORECAST LOW 27N170W 1000MB. SE TO S WINDS 30TO 40 KT
FROM 25N TO 30N BETWEEN 160W TO 172W. SE TO S WINDS 20 TO 30 KT
FROM 20N TO 25N BETWEEN 163W TO 168W.
.48 HOUR FORECAST LOW 30N170W 1002 MB. WINDS 30 TO 35 KT N OF 23N
BETWEEN 162W AND 168W. WINDS 20 TO 30 KT WITHIN 180 NM E QUADRANT.

.SYNOPSIS AND FORECAST.

.LOW 19N175W 1001 MB MOVING NE 15 KT. WINDS 20 TO 25 KT FROM 10N
TO 17N BETWEEN 170W AND 175E... AND 150 NM ELSEWHERE. SCATTERED
MODERATE TO STRONG TSTMS FROM 10N TO 17N BETWEEN 170W AND 170E.
ISOLATED MODERATE TSTMS ELSEWHERE FROM 20N TO 25N BETWEEN 165W
AND 174E.
.24 HOUR FORECAST LOW 25N170W 1000 MB. WINDS DESCRIBED IN
ASSOICIATION WITH GALE LOW ABOVE.
.48 HOUR FORECAST LOW MERGED WITH GALE LOW DESCRIBED ABOVE.

.LOW 11N149W 1010 MB NEARLY STATIONARY.SCATTERED MODERATE
TSTMS FROM 05N TO 11N E OF 155W.
.24 HOUR FORECAST LOW 13N150W 1008 MB.
.48 HOUR FORECAST LOW 14N152W 1008 MB.

.FRONT FROM 29N180E TO 24N166E TO 25N160E MOVING SE 10 KT.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N180E TO 21N169E TO
19N162E.
.48 HOUR FORECAST WEAK FRONT FROM 30N179E TO 20N170E.

.TROUGH FROM 30N164W TO 22N169W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH MERGED WITH GALE LOW DESCRIBED ABOVE.

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

.SEAS 8 TO 11 FT FROM 11N TO 20N BETWEEN 180W AND 170W. SEAS 8 TO
9 FT FROM 16N TO 21N BETWEEN 167W AND 161W.
.24 HOUR FORECAST SEAS 12 TO 18 FT FROM 23N TO 28N BETWEEN 165W
AND 171W... SEAS 8 TO 12 FT N OF 20N BETWEEN 161W AND 173W. SEAS 8
TO 10 FT FROM 12N TO 20N BETWEEN 165W AND 174W.
.48 HOUR FORECAST SEAS 12 TO 14 FT N OF 27N BETWEEN 164W AND
172W. SEAS 8 TO 12 FT N OF A LINE FROM 30N161W TO 21N165W TO
30N177W.

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

.MONSOON TROUGH FROM 11N140W TO THIRD LOW ABOVE TO LOW IN
GALE WARNING SECTION ABOVE TO 19N173W TO FIRST LOW IN SYNOPSIS AND
FORECAST SECTION ABOVE TO 15N178E TO 13N167E TO 14N160E. SEE
TSTMS ASSOCIATED WITH LOWS ABOVE.

.ISOLATED MODERATE TSTMS N OF 27N BETWEEN 156W TO 163W.

$$

.FORECASTER SHIGESATO . HONOLULU HI.