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From: <ldm@weather.cod.edu>
Subject: Western Pacific: Satellite Interpretation Message
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220222145028.A2A111C0EEE@weather.cod.edu>
Date: Tue, 22 Feb 2022 14:50:28 +0000
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560 
ATPQ40 PGUM 221450
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1250 AM CHST WED FEB 23 2022

WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.

A COLD FRONT EXTENDS SOUTHWESTWARD THROUGH 25N166E TO 22N160E...THEN
CONTINUES AS A SHEAR LINE THROUGH THE FAR NORTHERN MARIANAS TO BEYOND 
130E AT 11N. LOW CLOUDINESS AND AREAS OF SHOWERS ARE SEEN ALONG AND 
UP TO 250 MILES NORTHWEST OF THIS BOUNDARY...INCLUDING THE NORTHERN
MARIANA ISLANDS. 

A SHEAR LINE FRAGMENT REACHES SOUTHWESTWARD FROM EAST OF GUAM AROUND
14N147E TO THE MAIN ISLANDS OF PALAU AROUND 7N134E. LOW CLOUDINESS 
AND PATCHY SHOWERS ARE SEEN WITHIN 100 MILES OF THIS FEATURE...WITH A
FEW THUNDERSTORMS ALONG THE SOUTHERN EXTENT AROUND PALAU AND YAP.

A NEAR-EQUATORIAL TROUGH STRETCHES FROM 1N130E TO THE EQUATOR AT 
140E. SCATTERED SHOWERS AND THUNDERSTORMS ARE OCCURRING IN LOW-LEVEL 
CONVERGENCE NORTH OF THE TROUGH...SOUTH OF A LINE FROM 7N130E TO 
3N134E TO 1N140E.

TRADE-WIND CONVERGENCE IS GENERATING SCATTERED SHOWERS AND 
THUNDERSTORMS ACROSS SOUTHERN POHNPEI STATE AND JUST SOUTH OF KOSRAE.
THIS IS BETWEEN 1N AND 5N FROM 153E TO 170E. 

WEAKER TRADE-WIND CONVERGENCE IS PRODUCING SCATTERED SHOWERS SOUTH OF
MAJURO...WITHIN 100 MILES OF A LINE FROM 3N170E TO 6N176E. 

NATIONAL WEATHER SERVICE GUAM WILL DISCONTINUE THE ISSUANCE OF THE 
ATPQ40 PGUM (SIMGUM) EFFECTIVE 1 MAR 2022. IT WILL BE REPLACED BY 
AXPQ20 PGUM (TWDPQ)...WHICH WILL PROVIDE ENHANCED INFORMATION.

$$

BUKUNT


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