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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220106095533.109F51C0EEE@weather.cod.edu>
Date: Thu, 6 Jan 2022 09:55:33 +0000
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512 
FZPN40 PHFO 060955
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC THU JAN 06 2022

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC JAN 06 2022.
24 HOUR FORECAST VALID 0600 UTC JAN 07 2022.
48 HOUR FORECAST VALID 0600 UTC JAN 08 2022.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N178W TO 24N173E TO 19N160E MOVING E 20 KT. W TO SW
WINDS 25 TO 35 KT N OF 28N W OF 174W. W TO SW WINDS 20 TO 30 KT 
ELSEWHERE N OF A LINE FROM 28N168W TO 24N180E TO 24N168E TO 
27N160E.  
.24 HOUR FORECAST FRONT FROM 30N170W TO 21N177E TO 12N160E. NW TO W
WINDS 25 TO 40 KT WITHIN 900 NM W OF FRONT N OF 28N. SW WINDS 25 TO 
35 KT WITHIN 270 NM E OF FRONT N OF 28N. WINDS 20 TO 30 KT 
ELSEWHERE N OF A LINE FROM 27N166W TO 25N174W TO 24N174E TO 
28N170E. NE WINDS 20 TO 25 KT WITHIN 120 NM N OF FRONT W OF 165E.
.48 HOUR FORECAST FRONT FROM 30N155W TO 24N162W TO 19N175W. NW 
WINDS 25 TO 35 KT WITHIN 450 NM W OF FRONT N OF 28N. WINDS 20 TO 30
KT ELSEWHERE N OF A LINE FROM 28N150W TO 25N159W TO 26N168W. 

...GALE WARNING...
.48 HOUR FORECAST NEW FRONT FROM 30N169E TO 25N160E. SW WINDS 25 TO 
35 KT WITHIN 180 NM E OF FRONT N OF 28N. WINDS 20 TO 30 KT 
ELSEWHERE N OF A LINE FROM 28N178E TO 27N166E TO 27N160E.

.SYNOPSIS AND FORECAST.

.WEAK LOW 17N169E 1011 MB. TROUGH FROM 21N175E TO LOW TO 14N167E. 
LOW AND TROUGH NEARLY STATIONARY.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH ABSORBED BY FRONT 
DESCRIBED IN FIRST SECTION OF WARNINGS ABOVE.

.COLD FRONT FROM 30N147W TO 25N153W MOVING E 15 KT. SE TO S WINDS 
20 TO 25 KT WITHIN 210 NM E OF COLD FRONT N OF 27N...AND FROM 21N 
TO 27N E OF 145W.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N141W TO 27N146W. WINDS 
DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF AREA. 

.TROUGH FROM 25N157W TO 21N168W MOVING N SLOWLY.
.24 HOUR FORECAST TROUGH FROM 27N157W TO 23N166W.
.48 HOUR FORECAST TROUGH DISSIPATED. 

.TROUGH FROM 25N149W TO 15N151W MOVING NNW SLOWLY. 
.24 HOUR FORECAST TROUGH FROM 24N151W TO 17N153W.
.48 HOUR FORECAST TROUGH FROM 26N158W TO 20N152W.

.48 HOUR FORECAST NE WINDS 20 TO 25 KT FROM 05N TO 13N BETWEEN 166W 
AND 169E.

.HIGH 30N158W 1020 MB MOVING NE 30 KT. RIDGES FROM HIGH TO 24N170W
TO 18N180E...AND FROM HIGH TO 28N152W...MOVING ENE 30 KT.
.24 HOUR FORECAST HIGH MOVED FAR N OF AREA. 

.RIDGE FROM 28N140W TO 25N146W MOVING ESE SLOWLY.

.24 HOUR FORECAST NEW HIGH 21N171W 1016 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

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

.SEAS 12 TO 23 FT N OF A LINE FROM 29N170W TO 25N177E TO 22N160E. 
SEAS 12 TO 14 FT N OF 24N BETWEEN 155W AND 169W. SEAS 12 TO 18 FT
ELSEWHERE N OF A LINE FROM 20N150W TO 20N158W TO 04N167W TO 
04N180E...AND ELSEWHERE N OF A LINE FROM 24N180E TO 18N160E. SEAS 
8 TO 10 FT E OF A LINE FROM 08N140W TO 17N150W TO 30N150W.
.24 HOUR FORECAST SEAS 12 TO 26 FT N OF A LINE FROM 30N166W TO 
20N175E TO 20N166E TO 24N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A 
LINE FROM 23N165W TO 23N172W TO 10N160E. SEAS 8 TO 10 FT N OF A 
LINE FROM 18N143W TO 11N152W TO 04N165W...AND FROM 04N TO 15N
BETWEEN 165W AND 178E.
.48 HOUR FORECAST SEAS 12 TO 21 FT N OF A LINE FROM 30N154W TO 
18N177W TO 18N166E TO 27N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A 
LINE FROM 30N149W TO 10N176W TO 10171E TO 09N160E. SEAS 8 TO 10 FT
FROM 03N TO 10N BETWEEN 164W AND 172W. SEAS 8 TO 9 FT N OF 18N E OF
150W.

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

.ISOLATED MODERATE TSTMS WITHIN 04N TO 10N BETWEEN 169E AND 164E.

.ITCZ FROM 08N140W TO 08N151W TO 07N167W TO 03N179W. SCATTERED
MODERATE TSTMS WITHIN 90 NM OF ITCZ W OF 171W. ISOLATED MODERATE
TSTMS ELSEWHERE WITHIN 120 NM OF ITCZ

$$

.FORECASTER HOUSTON. HONOLULU HI.


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