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From: <ldm@weather.cod.edu>
Subject: Central Pacific: High Seas Analysis
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220220033313.8A5EF1C0EEE@weather.cod.edu>
Date: Sun, 20 Feb 2022 03:33:13 +0000
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541 
FZPN40 PHFO 200332
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SUN FEB 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC FEB 20 2022.
24 HOUR FORECAST VALID 0000 UTC FEB 21 2022.
48 HOUR FORECAST VALID 0000 UTC FEB 22 2022.

.WARNINGS. 

...GALE WARNING...
.24 HOUR FORECAST NEW FRONT NEAR 30N160E. SE WINDS 30 TO 45 KT N 
OF 25N W OF 169E. S TO SE WINDS 20 TO 30 KT ELSEWHERE N OF 23N W 
OF 171E.
.48 HOUR FORECAST FRONT FROM 30N172E TO 23N160E. S TO SW WINDS 30
TO 35 KT N OF 28N BETWEEN 179W AND FRONT. WINDS 20 TO 30 KT 
ELSEWHERE N OF 26N BETWEEN 176W AND FRONT.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N177W TO 25N177E TO 20N160E MOVING E 15 KT. WINDS 
20 TO 30 KT N OF FRONT. ISOLATED MODERATE TSTMS WITHIN 150 NM E 
OF FRONT N OF 28N.
.24 HOUR FORECAST FRONT FROM 30N167W TO 26N169W TO 24N180W. WINDS
20 TO 25 KT WITHIN 120 NM OF FRONT. 
.48 HOUR FORECAST FRONT FROM 30N156W TO 26N160W TO 25N170W. WINDS
DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 15N148W TO 12N153W TO 12N157W TO 06N164W MOVING W 
10 KT AND DISSIPATING. WINDS 20 TO 25 KT FROM 14N TO 17N BETWEEN
146W AND 152W. ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH E 
OF 156W.
.24 HOUR FORECAST TROUGH REDEVELOPED FROM 17N146W TO 10N149W.
WINDS 20 TO 25 KT WITHIN 120 NM OF TROUGH N OF 15N. 
.48 HOUR FORECAST TROUGH DISSIPATED. WINDS EASED TO 20 KT OR 
LESS.

.FRONT FROM 30N152W TO 26N154W THENCE TROUGH TO 19N155W MOVING E 
SLOWLY. SE TO S WINDS 20 TO 25 KT N OF 28N BETWEEN 148W AND FRONT.
NW TO W WINDS 20 TO 25 KT N OF 29N BETWEEN 158W AND 164W. 
ISOLATED MODERATE TSTMS WITHIN 180 NM E OF FRONT. 
.24 HOUR FORECAST FRONT FROM 30N151W TO 26N152W THENCE TROUGH TO 
23N153W. WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT DISSIPATED. TROUGH FROM 30N149W TO 
23N154W.

.HIGH 28N170W 1022 MB MOVING SE SLOWLY. RIDGE FROM 30N168W TO 
HIGH TO 26N179W. RIDGE FROM HIGH TO 25N164W TO 24N157W. RIDGES 
MOVING E SLOWLY AND GRADUALLY ERODING FROM THE W.
.24 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 30N143W TO 22N153W NEARLY STATIONARY.

.RIDGE FROM 30N168E TO 28N178E MOVING ENE 15 KT.

.NE TO E WINDS 20 TO 25 KT FROM 03N TO 20N W OF 175W. 
.24 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 02N TO 19N W OF 
175W.
.48 HOUR FORECAST NE WINDS 20 TO 25 KT FROM 01N TO 13N W OF 180W.

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

.SEAS 12 TO 13 FT N OF 28N BETWEEN 177E AND 170E...AND N OF 28N 
BETWEEN 158W AND 163W. SEAS 8 TO 12 FT ELSEWHERE N OF 20N W OF
180W...AND N OF 21N BETWEEN 148W AND 167W. SEAS 8 TO 11 FT FROM
01N TO 20N W OF 170W. SEAS 8 TO 9 FT FROM 03N TO 21N E OF 170W. 
.24 HOUR FORECAST SEAS 12 TO 14 FT NW OF LINE 30N164E TO 27N160E.
SEAS 8 TO 12 FT ELSEWHERE W OF LINE FROM 30N170W TO 20N176W. SEAS
8 TO 11 FT FROM 02N TO 20N W OF 170E. SEAS 8 TO 10 FT FROM 03N 
BETWEEN 170W AND 170E. 
.48 HOUR FORECAST SEAS 8 TO 11 FT N OF 26N W OF 170E. SEAS 8 TO 9
FT FROM 03N TO 20N W OF 170W...AND N OF 26N BETWEEN 162W AND 
170E. 

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

.ITCZ FROM 07N140W TO 10N147W...AND FROM 04N168W TO 03N168E. 
SCATTERED MODERATE TO LOCALLY STRONG TSTMS WITHIN 150 NM N OF 
ITCZ W OF 174W. SCATTERED MODERATE TSTMS WITHIN 180 NM NE OF ITCZ
E OF 147W. 

$$

.FORECASTER ALMANZA. HONOLULU HI.


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