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From: <ldm@weather.cod.edu>
Subject: Western Pacific: Satellite Interpretation Message
To: <wx-tropl@lists.illinois.edu>
Message-ID: <20220204025344.392F01C0EEE@weather.cod.edu>
Date: Fri, 4 Feb 2022 02:53:44 +0000
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757 
ATPQ40 PGUM 040253
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1253 PM CHST FRI FEB 4 2022

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

A NEAR-EQUATORIAL TROUGH IS PRODUCING SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS SOUTH OF A LINE FROM 5N130E TO EQ137E. THIS IS WELL 
SOUTH OF THE MAIN ISLANDS OF PALAU.

TRADE WIND CONVERGENCE EAST OF THE MAIN ISLANDS OF PALAU IS
GENERATING PATCHY SHOWERS AND THUNDERSTORMS BETWEEN 5N AND 8N FROM
138E TO 141E.

A TRADE-WIND TROUGH IS LOCATED SOUTH OF POHNPEI AND CENTERED ALONG A
LINE FROM 6N157E TO 1N159E. NUMEROUS SHOWERS AND ISOLATED 
THUNDERSTORMS ARE OCCURRING BETWEEN THE EQUATOR AND 6N FROM 153E TO 
162E. CLOUDS AND SCATTERED SHOWERS ALSO ASSOCIATED WITH THE 
CONVERGING TRADE WINDS BEHIND THE THE TROUGH AND ARE SEEN ACROSS 
KOSRAE STATE. THIS IS WITHIN 100 MILES OF A LINE FROM 6N168E TO 
4N168E.

EAST OF MAJURO...A BROAD TROUGH AND TRAILING CONVERGENT TRADE WINDS 
ARE PRODUCING SCATTERED SHOWERS AND ISOLATED THUNDESTORMS WITHIN 120
MILES OF A LINE THAT STRETCHES NORTHEAST FROM 3N170E TO 8N177E WHERE 
IT THEN EXTENDS EASTWARD BEYOND 180 AT 8N180.

A WEAKENING STATIONARY FRONT REACHES WEST-SOUTHWESTWARD THROUGH 
20N180...THEN TRANSITIONS TO A SHEAR LINE SOUTH OF WAKE ISLAND AROUND
16N168E. THE SHEAR LINE THEN EXTENDS WEST-SOUTHWESTWARD TO THE SOUTH
OF GUAM AT 11N144E AND THEN THROUGH YAP BEFORE ENDING AROUND 10N134E.
PATCHY CLOUDS AND SHOWERS ARE PRESENT ALONG AND UP TO 200 MILES 
NORTH OF THIS FEATURE. ISOLATED THUNDERSTORMS ARE ALSO DEVELOPING 
EAST OF YAP BETWEEN 8N AND 10N FROM 140E TO 142E.


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.

$$

SCHANK


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