739  
ATPQ40 PGUM 180251  
SIMGUM  
 
SATELLITE INTERPRETATION MESSAGE  
NATIONAL WEATHER SERVICE TIYAN GU  
1251 PM CHST WED SEP 18 2019  
 
WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.  
 
A MONSOON TROUGH EXTENDS EASTWARD FROM A TROPICAL DISTURBANCE  
CENTERED NORTHEAST OF LUZON AT 21N128E ACROSS 21N130E TO 21N143E...  
THEN TURNS SOUTHEASTWARD THROUGH A WEAK CIRCULATION CENTERED NORTH  
OF POHNPEI NEAR 14N157E...THEN CONTINUES EASTWARD TO BEYOND THE DATE  
LINE NEAR 14N. AN UPPER-LEVEL IS OVER THE MARIANAS NEAR 14N145E WITH  
ANOTHER UPPER-LEVEL LOW FARTHER NORTHEAST NEAR 20N154E. INTERACTION  
BETWEEN THESE FEATURES IS TRIGGERING SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS ACROSS THE PHILIPPINE SEA TO NORTH OF YAP AND PALAU  
BETWEEN 11N AND 22N FROM 130E TO 141E. SCATTERED SHOWERS ARE ALSO  
SEEN BETWEEN YAP AND KOROR...BETWEEN 8N AND 11N FROM 135E TO 137E.  
SCATTERED SHOWERS AND THUNDERSTORMS ARE ALSO PRESENT FROM WEST OF  
CHUUK TO THE NORTH CNMI...INCLUDING TINIAN AND SAIPAN...WITHIN 150  
MILES OF A LINE FROM 21N145E TO 14N148E TO 8N150E. SCATTERED SHOWERS  
AND A FEW THUNDERSTORMS ARE FOUND FARTHER EAST BETWEEN 12N AND 21N  
FROM 150E TO 158E.  
 
SCATTERED SHOWERS AND A FEW THUNDERSTORMS ARE SEEN OVER THE EASTERN  
END OF THE MONSOON ACROSS THE NORTHERN MARSHALL ISLANDS TO BEYOND THE  
DATE LINE WITHIN 140 MILES OF A LINE FROM 13N172E TO 14N180.  
 

 
 
KLEESCHULTE  
 
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