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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220221103110.803B01C0EEE@weather.cod.edu>
Date: Mon, 21 Feb 2022 10:31:10 +0000
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747 
FZPN40 PHFO 211030
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC MON FEB 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 21 2022.
24 HOUR FORECAST VALID 0600 UTC FEB 22 2022.
48 HOUR FORECAST VALID 0600 UTC FEB 23 2022.

.WARNINGS. 

...GALE WARNING...
.FRONT 30N164E 27N160E MOVING E 30 KT. WINDS 20 TO 35 KT N OF LINE 
30N175E 26N167E 24N160E. SEE SEAS BELOW. 
.24 HOUR FORECAST FRONT 30N175E 26N170E 23N160E. WINDS 20 TO 35 KT 
N OF LINE 30N172W 27N175W 28N160E. SEE SEAS BELOW. 
.48 HOUR FORECAST FRONT 30N178W 23N170E 21N160E. WINDS 20 TO 30 KT 
N OF 28N W OF 165W. SEE SEAS BELOW.

.SYNOPSIS AND FORECAST.

.FRONT 30N167W 27N170W 24N178W MOVING E 25 KT N OF 25N...AND 
NEARLY STATIONARY AND DISSIPATING ELSEWHERE. 
.24 HOUR FORECAST FRONT 30N155W 24N160W 23N167W.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N150W 24N155W.

.TROUGH 30N151W 26N153W 23N156W MOVING N SLOWLY. 
.24 HOUR FORECAST TROUGH 30N151W 19N156W. 
.48 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED DIRECTLY 
ABOVE.

.TROUGH 21N152W 15N155W MOVING W SLOWLY. ISOLATED MODERATE TSTMS 
FROM 11N TO 18N BETWEEN 149W AND TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED. 

.WINDS 20 TO 25 KT IN AREA 26N180W 16N160W 05N171W 01N160E 
10N160E 26N180W.
.24 HOUR FORECAST WINDS 20 TO 25 KT N OF LINE 09N140W 06N170W 
03N160E AND S OF LINE 15N140W 20N150W 20N171W 11N172E 11N160E.
.48 HOUR FORECAST WINDS 20 TO 25 KT N OF LINE 08N140W 07N170W 
03N160E AND S OF LINE 25N140W 17N170W 25N160E.

.RIDGE 30N180W 21N160E MOVING ESE 25 KT.

.RIDGE 30N176W 27N173W MOVING E 25 KT.

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

.SEAS 12 TO 14 FT N OF LINE 30N167E 28N160E. SEAS 8 TO 12 FT 
ELSEWHERE N OF LINE 30N168W 17N172W 05N172W 01N160E.
.24 HOUR FORECAST SEAS 18 TO 24 FT N OF LINE 30N163E 29N160E. SEAS 
12 TO 18 FT ELSEWHERE N OF LINE 30N165E 28N160E. SEAS 8 TO 12 FT
ELSEWHERE N OF LINE 30N156W 27N165W 29N180W 28N170E 25N160E. SEAS 
8 TO 10 FT IN AREA 23N178W 12N164W 05N169W 04N170E 13N167E 23N178W. 
SEAS 8 TO 9 FT E OF 150W BETWEEN 08N AND 11N.
.48 HOUR FORECAST SEAS 18 TO 26 FT N OF LINE 30N177E 24N170E 
24N160E. SEAS 12 TO 18 FT ELSEWHERE N OF LINE 30N179E 22N170E 
19N160E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 30N179W 21N171E 
17N160E. SEAS 8 TO 10 FT FROM 05N TO 15N BETWEEN 171E AND 
172W...AND IN AREA 15N155W 09N141W 05N151W 08N158W 15N155W.

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

.ITCZ 07N140W 06N160W 04N180W 01N160E. ISOLATED MODERATE TSTMS 
WITHIN 90 NM OF ITCZ E OF 148W...BETWEEN 175W AND 173E...AND W OF 
165E.

$$

.FORECASTER POWELL. HONOLULU HI.


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