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North Pacific High Seas Forecast

416
FZPN40 PHFO 170330
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC TUE JUL 17 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 17 2018.
24 HOUR FORECAST VALID 0000 UTC JUL 18 2018.
48 HOUR FORECAST VALID 0000 UTC JUL 19 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 13N143W 1008 MB TROUGH FROM LOW TO 08N149W MOVING W 10 KT.
WINDS 25 TO 30 KT AND SEAS 12 TO 13 FT WITHIN 240 NM N SEMICIRCLE.
ELSEWHERE WINDS 20 TO 25 KT AND SEAS 8 TO 11 FT WITHIN 510 NM N
AND NE QUADRANT. ISOLATED MODERATE TO STRONG TSTMS E OF A LINE
FROM 06N150W TO 11N150W TO 18N143W.
.24 HOUR FORECAST WEAKENING LOW 13N149W 1009 MB TROUGH FROM LOW
TO 07N158W. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT WITHIN 300 NM OF
LOW N AND NE QUADRANT. ELSEWHERE WINDS 20 TO 25 KT AND SEAS 8 TO
10 FT WITHIN 540 NM N AND NE QUADRANT AND 300 NM ELSEWHERE.
.48 HOUR FORECAST WEAK LOW 13N154W 1010 MB TROUGH FROM LOW TO
09N158W TO 07N165W. NE TO E WINDS 25 TO 30 KT FROM 15N TO 23N
BETWEEN 158W TO 148W. SEAS 8 TO 12 FT FROM 12N TO 20N BETWEEN 156W
AND 150W. SEAS 8 TO 9 FT FROM 20N TO 24N BETWEEN 156W AND 147W.

.TROUGH FROM 30N163E TO 21N163E MOVING W 15 KT. WINDS 20 TO 30 KT
AND SEAS 8 TO 11 FT N OF A LINE FROM 22N178W TO 26N160W.
SCATTERED MODERATE TO LOCALLY STRONG TSTMS WITHIN 180 NM OF A
LINE FROM 22N180E TO 28N163E.
.24 HOUR FORECAST TROUGH MOVED JUST W OF THE AREA. WINDS 20 TO 25
KT AND SEAS 8 TO 11 FT N OF A LINE FROM 28N174W TO 25N180E TO
26N160E. ADDITIONAL WINDS AND SEAS BELOW.

.TROUGH FROM 30N160W TO 22N171W SLOWLY. ISOLATED MODERATE TO
LOCALLY STRONG TSTMS N OF 22N BETWEEN 171W AND 156W.
.24 HOUR FORECAST TROUGH 30N161W TO 23N170W.
.48 HOUR FORECAST TROUGH 30N163W TO 24N170W.

.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT N
OF 26N W OF 180E.

.OTHERWISE WINDS 20 KT OR LESS AND SEAS 8 FT OR LOWER REMAINDER
FORECAST AREA.

.ITCZ FROM 09N152W TO 07N170W TO 11N180E TO 10N175E TO 09N160E.
NUMEROUS MODERATE TO STRONG TSTMS WITHIN 300 NM OF A LINE FROM
14N174W TO 04N160E. ISOLATED MODERATE TO STRONG TSTMS ELSEWHERE
WITHIN 300 NM EITHER SIDE OF LINE OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 19N TO 21N BETWEEN 169W AND 164W.

$$

.FORECASTER ALMANZA. HONOLULU HI.

Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office



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It was last modified on: Wed, Dec 17 2014 - 1841 UTC
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