650  
ATPQ40 PGUM 011551  
SIMGUM  
 
SATELLITE INTERPRETATION MESSAGE  
NATIONAL WEATHER SERVICE TIYAN GU  
151 AM CHST MON AUG 2 2021  
 
WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.  
 
CONVERGENT WEST TO SOUTHWESTERLY MONSOON FLOW CONTINUES TO GENERATE  
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS OVER THE PHILIPPINE SEA  
AND CNMI...BETWEEN 13N AND 23N FROM 140E TO 160E.  
 
A STRENGTHENING CIRCULATION IS CENTERED NEAR 20N153E. THE JOINT  
TYPHOON WARNING CENTER (JTWC) HAS ISSUED A TROPICAL CYCLONE FORMATION  
ALERT WITH THIS SYSTEM...INDICATING TROPICAL CYCLONE FORMATION IS  
LIKELY WITHIN THE NEXT 24 HOURS. SCATTERED TO NUMEROUS SHOWERS WITH  
ISOLATED THUNDERSTORMS ARE OCCURRING WITHIN 200 MILES OF THIS  
SYSTEM...MAINLY ALONG ITS SOUTHERN AND EASTERN FLANKS.  
 
ANOTHER TROPICAL CIRCULATION LOCATED AT 27N143E IS ALSO THE SUBJECT  
OF A TROPICAL CYCLONE FORMATION ALERT ISSUED BY JTWC. THIS SYSTEM IS  
ALSO EXPECTED TO BECOME A TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS.  
SCATTERED SHOWERS ARE DEVELOPING WITHIN 150 MILES OF THIS FEATURE.  
 
SCATTERED SHOWERS AND A FEW THUNDERSTORMS ARE OCCURRING ALONG A  
SURFACE TROUGH THAT MARKS THE EDGE OF A SLOWLY DEVELOPING ITCZ. THIS  
FEATURE STRETCHES FROM SOUTHEAST OF POHNPEI...THROUGH KOSRAE...TO  
NORTH OF MAJURO...ALONG AN AXIS FROM 3N160E TO 9N171E. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS ARE DEVELOPING WITHIN 200 MILES OF  
THIS FEATURE.  
 

 
 
DOLL  
 
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