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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220219104532.759B51C0EEE@weather.cod.edu>
Date: Sat, 19 Feb 2022 10:45:32 +0000
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372 
FZPN40 PHFO 191045
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SAT FEB 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19 2022.
24 HOUR FORECAST VALID 0600 UTC FEB 20 2022.
48 HOUR FORECAST VALID 0600 UTC FEB 21 2022.

.WARNINGS. 

...GALE WARNING...
.42 HOUR FORECAST FRONT JUST W OF AREA. WINDS 30 TO 35 KT N OF 28N
W OF 164E. WINDS 20 TO 30 KT ELSEWHERE N OF 23N W OF 171E.
.48 HOUR FORECAST FRONT FROM 30N163E TO 28N160E. WINDS 30 TO 40 KT
N OF 28N W OF 168E. WINDS 20 TO 30 KT ELSEWHERE NW OF A LINE FROM
30N175E TO 23N160E.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N177E TO 24N170E TO 20N160E MOVING E 15 KT. WINDS 20 
TO 30 KT N OF 28N BETWEEN FRONT AND 177W...AND N OF FRONT W OF 167E.
ISOLATED MODERATE TSTMS WITHIN 120 NM E OF FRONT.
.24 HOUR FORECAST FRONT FROM 30N175W TO 23N178W TO 20N170E. WINDS 
20 TO 30 KT BETWEEN FRONT AND 27N W OF 176E. 
.48 HOUR FORECAST FRONT FROM 30N168W TO 23N172W TO 25N178W. WINDS
DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 15N151W TO 12N151W TO 08N154W TO 07N157W NEARLY 
STATIONARY. WINDS 20 TO 30 KT FROM 11N TO 20N E OF 153W. ISOLATED 
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 17N150W TO 10N157W. E WINDS 20 TO 
25 KT FROM 15N TO 20N BETWEEN 145W AND 152W.
.48 HOUR FORECAST TROUGH FROM 18N150W TO 10N150W. WINDS DIMINISHED
TO 20 KT OR LESS.

.TROUGH FROM 30N153W TO 26N153W TO 20N157W MOVING E SLOWLY. E TO 
SE WINDS 20 TO 25 KT N OF 20N BETWEEN 148W AND 152W. 
.24 HOUR FORECAST TROUGH FROM 30N152W TO 21N154W. SE TO S WINDS 
20 TO 25 KT N OF 25N BETWEEN 146W AND 152W. 
.48 HOUR FORECAST TROUGH FROM 30N150W TO 20N153W. SE TO S WINDS 
20 TO 25 KT N OF 28N BETWEEN 145W AND 150W.

.24 HOUR FORECAST NEW LOW 30N158W 1005 MB. NEW TROUGH FROM LOW TO 
26N160W. WINDS 20 TO 30 KT N OF 26N BETWEEN 155W AND 165W.
.48 HOUR FORECAST LOW 33N153W 1012 MB. TROUGH MERGED WITH TROUGH
DESCRIBED ABOVE. SEE WINDS WITH TROUGH DESCRIBED ABOVE.

.24 HOUR FORECAST NEW HIGH 28N171W 1020 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 30N174W TO 25N179W TO 24N174E MOVING NE 20 KT.

.RIDGE FROM 27N160E TO 26N167E MOVING E 10 KT.

.WINDS 20 TO 30 KT N OF 20N BETWEEN 160W AND 170W...FROM 05N TO 
23N BETWEEN 170W AND 180E...AND FROM 04N TO 18N W OF 180E.
.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 06N TO 20N BETWEEN 169W
AND 175E...AND FROM 02N TO 20N W OF 175E.
.48 HOUR FORECAST WINDS 20 TO 30 KT FROM 05N TO 22N BETWEEN 170W 
AND 175E...AND FROM 02N TO 15N W OF 175E.

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

.SEAS 12 TO 15 FT NW OF A LINE FROM 30N170E TO 24N160E. SEAS MAINLY 
8 TO 12 FT ELSEWHERE N OF 04N.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 02N W OF 180E...AND N OF A
LINE FROM 30N170W TO 22N161W TO 20N153W TO 14N152W TO 14N147W. SEAS
MAINLY 8 TO 10 FT FROM 04N TO 20N BETWEEN 165W AND 170W.
.48 HOUR FORECAST SEAS 8 TO 12 FT N OF 02N W OF 170W.

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

.ITCZ FROM 08N140W TO 11N148W...AND FROM 06N161W TO 03N173W TO 
03N178E. ISOLATED MODERATE TSTMS WITHIN 150 NM N OF ITCZ. 

.WIDELY SCATTERED MODERATE TSTMS FROM S OF 06N W OF 176E.

$$

.FORECASTER AHUE. HONOLULU HI.


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