040  
ATPQ40 PGUM 180331  
SIMGUM  
 
SATELLITE INTERPRETATION MESSAGE  
NATIONAL WEATHER SERVICE TIYAN GU  
131 PM CHST THU OCT 18 2018  
 
WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.  
 
A MONSOON TROUGH RUNS SOUTHEASTWARD THROUGH 08N130E TO 07N150E TO A  
CIRCULATION OVER CHUUK...THEN CONTINUES EASTWARD TO END AT 08N163E.  
SCATTERED SHOWERS ARE FOUND SOUTHWEST OF KOROR WITHIN AN AREA BETWEEN  
04N AND 07N FROM 130E TO 134E...WELL SOUTHEAST OF YAP WITHIN 50  
MILES OF A LINE FROM 01N141E TO 03N142E TO 05N145E...AND WITHIN AN  
AREA BETWEEN 09N AND 12N FROM 145E TO 147E. SCATTERED TO NUMEROUS  
SHOWERS ARE ALSO FOUND EAST-NORTHEAST OF CHUUK WITHIN 20 MILES OF A  
LINE FROM 06N154E TO 09N154E. NUMEROUS TO OCCASIONAL SHOWERS AND  
ISOLATED THUNDERSTORMS ARE OCCURRING ACROSS THE REPUBLIC OF THE  
MARSHALL ISLANDS BETWEEN 02N AND 12N EAST OF 162E.  
 
SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS ARE FOUND  
SOUTHWEST OF WAKE ISLAND WITHIN AN AREA BOUNDED BY 14N159E TO 20N156E  
TO 20N162E TO 14N170E BACK TO 14N159E...AND WELL NORTHEAST OF THE  
NORTHERN MARIANAS WITHIN 60 MILES OF A LINE FROM 15N152E TO 20N155E.  
 
A SURFACE TROUGH EXTENDS NORTHEAST FROM 16N138E TO 19N139E. SCATTERED  
TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS ARE OCCURRING WITHIN  
60 MILES OF THE TROUGH AXIS.  
 
A SURFACE TROUGH EXTENDS NORTHEAST FROM 22N130E TO BEYOND 25N134E.  
SCATTERED SHOWERS ARE OCCURRING WITHIN 20 MILES OF THE TROUGH.  
 

 
 
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