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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220218212632.1D1041C0EEE@weather.cod.edu>
Date: Fri, 18 Feb 2022 21:26:32 +0000
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842 
FZPN40 PHFO 182126
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC FRI FEB 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 18 2022.
24 HOUR FORECAST VALID 1800 UTC FEB 19 2022.
48 HOUR FORECAST VALID 1800 UTC FEB 20 2022.

.WARNINGS. 

...GALE WARNING...
.48 HOUR FORECAST FRONT JUST W OF AREA. WINDS 30 TO 35 KT N OF 
26N W OF 169E.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N172E TO 24N167E TO 20N160E MOVING E 10 KT. S TO SW
WINDS 20 TO 30 KT N OF 27N BETWEEN FRONT AND 180E. 
.24 HOUR FORECAST FRONT FROM 30N179W TO 25N172E TO 18N160E. WINDS 20
TO 30 KT NW OF FRONT. 
.48 HOUR FORECAST FRONT FROM 30N173W TO 25N180E TO 22N170E. WINDS 20
TO 30 KT N OF FRONT.

.TROUGH FROM 17N151W TO 14N151W TO 08N154W TO 07N157W NEARLY STATIONARY.
WINDS 20 TO 30 KT FROM 10N TO 20N E OF 158W. SCATTERED MODERATE TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 16N150W TO 09N156W. E WINDS 20 TO 25
KT FROM 10N TO 20N E OF 152W.
.48 HOUR FORECAST TROUGH FROM 17N149W TO 10N152W. E TO SE WINDS 20
TO 25 KT FROM 10N TO 20N E OF 150W.

.TROUGH FROM 30N155W TO 25N157W TO 22N157W MOVING E SLOWLY. E TO SE
WINDS 20 TO 25 KT N OF 25 N BETWEEN 155W AND 150W. 
.24 HOUR FORECAST TROUGH FROM 30N153W TO 21N154W. SE TO S WINDS 20
TO 25 KT N OF 23N BETWEEN 153W AND 147W. 
.48 HOUR FORECAST TROUGH FROM 30N150W TO 21N154W. WINDS DIMINISHED
TO 20 KT OR LESS.

.48 HOUR FORECAST NEW LOW 30N158W 1011 MB. NEW TROUGH FROM LOW TO 24N161W.

.RIDGE FROM 30N173W TO 27N177W TO 22N168E NEARLY STATIONARY.

.WINDS 20 TO 25 KT S OF 20N W OF 165W... AND N OF 20N BETWEEN 180W AND
160W. 
.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 03N TO 20N W OF 165W... AND
N OF 27N BETWEEN 167W AND 160W.
.48 HOUR FORECAST WINDS 20 TO 30 KT FROM 02N TO 20N W OF 167W.

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

.SEAS 12 TO 15 FT NW OF A LINE FROM 30N166E TO 25N160E. SEAS 12 TO
13 FT FROM 11N TO 16N BETWEEN 156W AND 148W. SEAS MAINLY 8 TO 12 FT
ELSEWHERE N OF A LINE FROM 06N140W TO 08N160W TO 02N170W TO 02N160E.
.24 HOUR FORECAST SEAS 12 TO 13 FT WITHIN 120 NM OF A LINE FROM 30N172E
TO 23N164E TO 21N160E. SEAS MAINLY 8 TO 12 FT ELSEWHERE N OF 04N.
.48 HOUR FORECAST SEAS 8 TO 12 FT N OF 02N W OF 170W. SEAS 8 TO 9 FT
FROM 14N TO 22N BETWEEN 155W AND 146W.

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

.ITCZ FROM 07N140W TO 08N144W TO 10N148W...AND FROM 06N160W TO 04N170W
TO 03N176E. ISOLATED MODERATE TSTMS WITHIN 150 NM N OF ITCZ. 

$$

.FORECASTER SHIGESATO. HONOLULU HI.


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