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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220218104417.BC88B1C0EEE@weather.cod.edu>
Date: Fri, 18 Feb 2022 10:44:17 +0000
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375 
FZPN40 PHFO 181043
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FEB 18 2022.
24 HOUR FORECAST VALID 0600 UTC FEB 19 2022.
48 HOUR FORECAST VALID 0600 UTC FEB 20 2022.

.WARNINGS. 

...GALE WARNING...
.TROUGH FROM 19N151W TO 14N152W TO 10N154W TO 07N155W MOVING W
SLOWLY. N TO NE WINDS 30 TO 35 KT FROM 18N TO 13N WITHIN 180 NM
W OF TROUGH. WINDS 20 TO 30 KT ELSEWHERE FROM 19N TO 09N E OF 
157W. SCATTERED MODERATE TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 17N153W TO 12N151W TO 09N153W. E 
WINDS 20 TO 25 KT FROM 20N TO 15N E OF 152W.
.48 HOUR FORECAST TROUGH FROM 18N151W TO 15N153W TO 10N154W. E
TO SE WINDS 20 TO 30 KT FROM 21N TO 14N BETWEEN 145W AND 152W.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N168E TO 27N163E TO 25N160E MOVING E 15 KT. SW WINDS 
20 TO 25 KT WITHIN 120 NM OF FRONT N OF 28N. ISOLATED MODERATE TSTMS
N OF 27N WITHIN 60 NM OF FRONT.
.24 HOUR FORECAST FRONT FROM 30N178E TO 23N168E TO 20N160E. WINDS 
20 TO 30 KT N OF A LINE FROM 30N170E TO 20N160E. 
.48 HOUR FORECAST FRONT FROM 30N174W TO 25N178E TO 21N170E. WINDS 
20 TO 30 KT N OF FRONT.

.TROUGH FROM 28N172E TO 25N167E TO 22N162E NEARLY STATIONARY. WINDS 
20 TO 30 KT ELSEWHERE N OF 25N BETWEEN TROUGH AND 180E.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE. SEE 
WINDS DESCRIBED WITH FRONT ABOVE.

.TROUGH FROM 30N157W TO 24N157W TO 19N155W MOVING E SLOWLY. E TO SE
WINDS 20 TO 25 KT N OF 19N E OF 155W. ISOLATED MODERATE TSTMS WITHIN 
240 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 30N153W TO 18N153W. SE WINDS 20 TO 
25 KT N OF 25N BETWEEN 145W AND 151W. SEE ADDITIONAL WINDS BELOW.
.48 HOUR FORECAST TROUGH FROM 30N153W TO 20N154W. SE WINDS 20 TO 
25 KT N OF 26N BETWEEN 147W AND 151W. NW TO N WINDS 20 TO 30 KT
N OF 26N BETWEEN 160W AND 164W.

.FRONT FROM 30N159W TO 25N167W TO 23N178W TO 25N177W MOVING E 
SLOWLY. SEE WINDS BELOW.
.24 HOUR FORECAST FRONT DISSIPATED. SEE WINDS BELOW.

.48 HOUR FORECAST NEW HIGH 28N171W 1021 MB.

.RIDGE FROM 30N174W TO 21N167E NEARLY STATIONARY.

.NE TO E WINDS 20 TO 30 KT N OF 20 BETWEEN 160W AND 180E...FROM
05N TO 20N BETWEEN 164W AND 170E...AND FROM 05N TO 10N W OF 170E.
.24 HOUR FORECAST N TO NE WINDS 20 TO 30 KT N OF 20N BETWEEN 159W
AND 170W. NE TO E WINDS 20 TO 30 KT FROM 05N TO 25N BETWEEN 170W
AND 180E...FROM 05N TO 20N BETWEEN 180E AND 169E...AND FROM 05N
TO 15N W OF 169E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 03N TO 20N BETWEEN
169W AND 170E...AND N OF 03N W OF 170E.

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

.SEAS 12 TO 13 FT WITHIN 120 NM OF A LINE FROM 17N151W TO 11N157W.
SEAS MAINLY 8 TO 12 FT ELSEWHERE N OF A LINE FROM 06N140W TO 06N154W
TO 00N172W TO 00N175E TO 01N160E.
.24 HOUR FORECAST SEAS 12 TO 16 FT N OF A LINE FROM 30N170E TO 
23N160E. SEAS MAINLY 8 TO 12 FT ELSEWHERE N OF 04N.
.48 HOUR FORECAST SEAS 12 TO 14 FT FROM 20N TO 25N W OF 170E...AND
N OF 28N BETWEEN 159W AND 164W. SEAS 8 TO 12 FT ELSEWHERE N OF 01N
W OF 170E...AND N OF 22N BETWEEN 149W AND 169W. SEAS 8 TO 10 FT
FROM 02N TO 20N BETWEEN 167W AND 180E...AND FROM 15N TO 22N BETWEEN
145W AND 153W.

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

.ITCZ FROM 07N140W TO 10N149W...AND FROM 06N160W TO 04N169W TO
04N179W. ISOLATED MODERATE TSTMS WITHIN 120 NM N OF ITCZ. 

$$

.FORECASTER AHUE. HONOLULU HI.


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