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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220219152551.F33871C0EEE@weather.cod.edu>
Date: Sat, 19 Feb 2022 15:25:51 +0000
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913 
FZPN40 PHFO 191525
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC FEB 19 2022.
24 HOUR FORECAST VALID 1200 UTC FEB 20 2022.
48 HOUR FORECAST VALID 1200 UTC FEB 21 2022.

.WARNINGS. 

...GALE WARNING...
.24 HOUR FORECAST NEW FRONT W OF AREA. WINDS 30 TO 35 KT N OF 28N 
W OF 162E. WINDS 20 TO 30 KT ELSEWHERE N OF 20N W OF 170E.
.36 HOUR FORECAST FRONT JUST W OF AREA. WINDS 30 TO 40 KT N OF 27N
W OF 164. WINDS 20 TO 30 KT ELSEWHERE N OF 23N W OF 171E. 
.48 HOUR FORECAST FRONT FROM 30N165E TO 26N160E. WINDS 30 TO 40 KT
N OF 28N BETWEEN FRONT AND 171E. WINDS 20 TO 30 KT ELSEWHERE N OF 
A LINE FROM 28N178E TO 24N160E.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N179E TO 24N171E TO 19N160E MOVING E 10 KT. WINDS 
20 TO 30 KT N OF 28N BETWEEN FRONT AND 175W...AND N OF FRONT. 
ISOLATED MODERATE TSTMS WITHIN 120 NM E OF FRONT.
.24 HOUR FORECAST FRONT FROM 30N172W TO 25N178W TO 20N170E. WINDS 
20 TO 30 KT BETWEEN FRONT AND 27N W OF 178W. 
.48 HOUR FORECAST FRONT FROM 30N164W TO 26N171W. WINDS DIMINISHED 
TO 20 KT OR LESS.

.TROUGH FROM 14N151W TO 11N152W TO 08N155W TO 07N157W NEARLY 
STATIONARY. WINDS 20 TO 25 KT FROM 11N TO 17N E OF 153W. 
.24 HOUR FORECAST TROUGH FROM 16N149W TO 10N156W. E WINDS 20 TO 
25 KT FROM 15N TO 20N E OF 152W.
.48 HOUR FORECAST TROUGH DISSIPATED. WINDS DIMINISHED TO 20 KT 
OR LESS.

.TROUGH FROM 30N154W TO 20N156W MOVING E SLOWLY. SE TO S WINDS 
20 TO 25 KT N OF 25N BETWEEN 145W AND 152W. 
.24 HOUR FORECAST TROUGH FROM 30N151W TO 20N155W. SE TO S WINDS 
20 TO 25 KT N OF 28N BETWEEN 148W AND 152W. 
.48 HOUR FORECAST TROUGH FROM 30N149W TO 20N154W. WINDS DIMINISHED 
TO 20 KT OR LESS.

.LOW JUST N OF AREA 32N160W 1004 MB MOVING ESE SLOWLY. WINDS 20 TO
25 KT N OF 29N BETWEEN 160W AND 164W.
.24 HOUR FORECAST LOW JUST N OF AREA 31S156W 1009 MB. NEW TROUGH
FROM LOW TO 26N159W. WINDS 20 TO 25 KT N OF 28N BETWEEN 155W AND 
160W.
.48 HOUR FORECAST LOW N OF AREA 33N152W 1012 MB. TROUGH MERGED WITH 
TROUGH DESCRIBED IMMEDIATELY ABOVE. WINDS DIMINISHED TO 20 KT OR 
LESS.

.24 HOUR FORECAST NEW HIGH 27N171W 1020 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 30N171W TO 27N173W TO 25N179W MOVING NE 20 KT.

.RIDGE FROM 29N160E TO 27N164E TO 27N167E MOVING E 10 KT.

.WINDS 20 TO 30 KT FROM 09N TO 20N BETWEEN 164W AND 180E...AND 
FROM 03N TO 20N W OF 180E.
.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 08N TO 20N BETWEEN 169W
AND 180E...AND FROM 02N TO 20N W OF 180E.
.48 HOUR FORECAST WINDS 20 TO 30 KT FROM 10N TO 22N BETWEEN 165W 
AND 175E...AND FROM 02N TO 15N W OF 175E.

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

.SEAS 12 TO 16 FT NW OF A LINE FROM 30N173E TO 25N166E TO 25S160E.
SEAS MAINLY 8 TO 12 FT ELSEWHERE N OF 03N.
.24 HOUR FORECAST SEAS 8 TO 13 FT N OF 02N W OF 180E. SEAS MAINLY
8 TO 10 FT FROM 04N TO 20N BETWEEN 169W AND 180E...FROM 13N TO 17N
BETWEEN 147W AND 152W...AND N OF A LINE FROM 26N170W TO 20N153W TO
22N149W.
.48 HOUR FORECAST SEAS MAINLY 8 TO 12 FT N OF 02N W OF 169W.

.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 177E.

$$

.FORECASTER AHUE. HONOLULU HI.


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