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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220220225048.1CD2A1C0EEE@weather.cod.edu>
Date: Sun, 20 Feb 2022 22:50:48 +0000
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831 
FZPN40 PHFO 202249
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SUN FEB 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FEB 20 2022.
24 HOUR FORECAST VALID 1800 UTC FEB 21 2022.
48 HOUR FORECAST VALID 1800 UTC FEB 22 2022.

.WARNINGS. 

...GALE WARNING...
.FRONT FAR W 0F AREA MOVING E 30 KT. SE WINDS 30 TO 40 KT N OF 25N
W OF 165E. SE WINDS 20 TO 30 KT ELSEWHERE N OF 23N W OF 167E.
.24 HOUR FORECAST FRONT FROM 30N169E TO 24N160E. S TO SW WINDS 30
TO 40 KT WITHIN 350 NM E OF FRONT N OF 28N. WINDS 20 TO 30 KT 
ELSEWHERE N OF 26N W OF 178W.
.48 HOUR FORECAST FRONT FROM 30N179W TO 23N168E TO 21N160E. S TO 
SW WINDS 20 TO 30 KT N OF 27N BETWEEN 170W AND FRONT.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N170W TO 25N175W TO 22N178E TO 20N167E MOVING E 25 KT
N OF 24N...AND NEARLY STATIONARY AND DISSIPATING ELSEWHERE. N TO
NE WINDS 20 TO 30 WITHIN 150 NM N OF FRONT BETWEEN 170W AND 
178W...AND NE TO E WINDS 20 TO 30 KT WITHIN 150 NM N OF FRONT W OF
178W. ISOLATED MODERATE TSTMS WITHIN 150 NM E OF FRONT N OF 24N.
.24 HOUR FORECAST FRONT FROM 30N158W TO 25N162W TO 24N168W. NW 
WINDS 20 TO 25 KT N OF 28N BETWEEN 159W AND 165W.
.48 HOUR FORECAST WEAKENING FRONT FROM 30N151W TO 27N153W THENCE 
TROUGH TO 23N156W. WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 30N151W TO 25N152W TO 21N156W MOVING N SLOWLY. SE TO
S WINDS 20 TO 25 KT WITHIN 240 NM E OF TROUGH N OF 28N. ISOLATED 
MODERATE TSTMS WITHIN 150 NM E OF TROUGH N OF 26N. 
.24 HOUR FORECAST TROUGH FROM 30N151W TO 22N155W TO 20N156W. 
WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED DIRECTLY 
ABOVE.

.TROUGH FROM 17N153W TO 13N155W MOVING W SLOWLY. ISOLATED 
MODERATE TSTMS WITHIN 350 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 16N156W TO 13N159W.
.48 HOUR FORECAST TROUGH DISSIPATED. 

.TROUGH FROM 30N156W TO 28N157W MOVING N 25 KT. 
.24 HOUR FORECAST TROUGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT FROM 02N TO 20N W OF 180W...AND FROM 
07N TO 17N E OF 147W. 
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 02N TO 20N W OF 
170W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 04N TO 14N W OF 175W...AND FROM
08N TO 21N E OF 160W.  

.HIGH 28N169W 1019 MB MOVING ESE 10 KT. RIDGES FROM HIGH TO 
30N168W...FROM HIGH TO 25N156W.
.24 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 30N141W TO 25N147W TO 23N151W NEARLY STATIONARY.

.RIDGE FROM 30N180W TO 28N175W MOVING ESE 25 KT.

.RIDGE FROM 30N171E TO 24N165E TO 23N160E MOVING E 25 KT.

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

.SEAS 12 TO 13 FT N OF 26N W OF 163E. SEAS 8 TO 12 FT ELSEWHERE N
OF 02N W OF 176W. SEAS 8 TO 10 FT FROM 05N TO 13N BETWEEN 167W AND
176W. SEAS 8 TO 9 FT N OF 28N BETWEEN 152W AND 158W. 
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF 28N W OF 161W. SEAS 8 TO 9
FT FROM 06N TO 28N W OF 165W...AND FROM 08N TO 14N E OF 144W. 
.48 HOUR FORECAST SEAS 12 TO 24 FT NW OF A LINE FROM 30N171E TO 
22N160E. SEAS 8 TO 12 FT ELSEWHERE N AND W OF A LINE FROM 30N178W 
TO 27N170W TO 19N160E. SEAS 8 TO 10 FT N OF 27N BETWEEN 153W AND 
165W...AND FROM 03N TO 15N BETWEEN 169W AND 169E...AND FROM 07N TO
13N BETWEEN 140W AND 151W. 

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

.ITCZ FROM 06N140W TO 07N151W...AND FROM 11N155W TO 09N165W TO 
04N180W TO 01N160E. SCATTERED MODERATE TSTMS WITHIN 210 NM N OF
ITCZ W OF 170E. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 120 NM OF
ITCZ W OF 175W.  

$$

.FORECASTER ALMANZA. HONOLULU HI.


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