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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220220100247.E67221C0EEE@weather.cod.edu>
Date: Sun, 20 Feb 2022 10:02:47 +0000
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062 
FZPN40 PHFO 201002
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FEB 20 2022.
24 HOUR FORECAST VALID 0600 UTC FEB 21 2022.
48 HOUR FORECAST VALID 0600 UTC FEB 22 2022.

.WARNINGS. 

...GALE WARNING...
.12 HOUR FORECAST NEW FRONT W OF AREA. SE TO S WINDS 30 TO 40 KT N 
OF 27N W OF 165E. SE TO S WINDS 20 TO 30 KT ELSEWHERE N OF A LINE 
FROM 27N168E TO 23N166E TO 24N160E.
.24 HOUR FORECAST FRONT FROM 30N163E TO 28N160E. S TO SW WINDS 30  
TO 45 KT WITHIN 360 NM E OF FRONT. S TO SW WINDS 20 TO 30 KT 
ELSEWHERE N OF A LINE FROM 29N172E TO 26N168E TO 24N160E.
.48 HOUR FORECAST FRONT FROM 30N175E TO 27N170E TO 22N160E. S TO SW 
WINDS 30 TO 35 KT WITHIN 420 NM E OF FRONT N OF 28N. S TO SW WINDS 
20 TO 30 KT ELSEWHERE N OF A LINE FROM 29N174W TO 27N177W TO 
27N172E. NW WINDS 20 TO 25 KT N OF 29N W OF 172E.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N174W TO 24N177E TO 21N160E MOVING E 20 KT. NE TO E
WINDS 20 TO 30 KT FROM FRONT TO 27N BETWEEN 179E AND 168E...AND E 
TO SE WINDS 20 TO 30 KT OF FRONT W OF 168E. ISOLATED MODERATE TSTMS 
N OF FRONT E OF 180E.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N165W TO 26N170W TO 
24N180E. WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST WEAK FRONT FROM 30N154W TO 24N159W. 

.FRONT FROM 30N152W TO 25N153W...CONTINUING AS A TROUGH TO 22N155W. 
FRONT MOVING E SLOWLY...AND TROUGH NEARLY STATIONARY. SE TO S WINDS 
20 TO 25 KT WITHIN 270 NM E OF FRONT N OF 26N. NW TO W WINDS 20 TO 
25 KT N OF 28N BETWEEN 155W AND 164W. ISOLATED MODERATE TSTMS 
WITHIN 180 NM E OF FRONT N OF 26N. 
.24 HOUR FORECAST FRONT FROM 30N150W TO 25N152W...CONTINUING AS A 
TROUGH TO 21N155W. SE TO S WINDS 20 TO 25 KT N OF 29N BETWEEN 145W
AND 149W.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N150W TO 26N153W
TO 22N155W. WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 17N147W TO 13N153W TO 09N160W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 210 NM OF TROUGH E OF 155W.
.24 HOUR FORECAST TROUGH FROM 17N147W TO 13N155W.
.48 HOUR FORECAST TROUGH DISSIPATED. 

.NE TO E WINDS 20 TO 25 KT FROM 03N TO 20N W OF 168W. 
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 21N W OF 
163W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 13N W OF 
165W...AND FROM 08N TO 19N E OF 158W.

.HIGH 28N171W 1021 MB MOVING SE 10 KT. RIDGES FROM HIGH TO 
30N170W...FROM HIGH TO 23N161W...AND FROM HIGH TO 24N179W...
MOVING SE 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 30N144W TO 27N145W TO 23N151W NEARLY STATIONARY.

.RIDGE FROM 30N172E TO 27N178E MOVING E 15 KT.

.RIDGE FROM 30N166E TO 25N160E MOVING E 15 KT.

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

.SEAS 12 TO 13 FT N OF 28N BETWEEN 178E AND 168E. SEAS 8 TO 12 FT 
ELSEWHERE N OF 02N W OF 179W. SEAS 8 TO 11 FT N OF A LINE FROM
20N149W TO 20N154W TO 24N165W TO 30N169W. SEAS 8 TO 10 FT FROM 03N
TO 20N BETWEEN 165W AND 178W. SEAS 8 TO 9 FT FROM 06N TO 18N E OF 
151W. 
.24 HOUR FORECAST SEAS 12 TO 14 FT NW OF A LINE FROM 30N169E TO 
27N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 06N168W TO 
03N180E TO 02N160E. SEAS 8 TO 9 FT FROM 06N TO 15N E OF 144W...AND 
FROM 13N TO 18N BETWEEN 146W AND 150W.
.48 HOUR FORECAST SEAS 12 TO 23 FT NW OF A LINE FROM 30N164E TO
28N160W. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 28N180E TO 
27N166E TO 25N160E. SEAS 8 TO 10 FT N OF 25N BETWEEN 158W AND 
180E...AND FROM 03N TO 23N BETWEEN 164W AND 167E. SEAS 8 TO 9 FT
FROM 07N TO 14N E OF 150W...AND FROM 02N TO 10N W OF 164E.

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

.ISOLATED MODERATE TSTMS S OF 05N W OF 167E.

.ITCZ FROM 08N140W TO 09N148W...AND FROM 06N165W TO 04N175W TO 
03N167E. SCATTERED MODERATE TO LOCALLY STRONG TSTMS WITHIN 120 NM 
OF ITCZ W OF 174W. ISOLATED MODERATE TSTMS WITHIN 120 NM NE OF ITCZ 
E OF 148W. 

$$

.FORECASTER HOUSTON. HONOLULU HI.


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