145  
FXUS01 KWBC 130727  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
326 AM EDT FRI JUL 13 2018  
 
VALID 12Z FRI JUL 13 2018 - 12Z SUN JUL 15 2018  
 
...HEAVY RAIN POSSIBLE ACROSS PORTIONS OF THE CENTRAL PLAINS INTO  
THE UPPER MISSISSIPPI VALLEY...  
   
..HEAVY RAIN POSSIBLE OVER PARTS OF ARIZONA
 
 
TROPICAL MOISTURE EXTENDING FROM THE SOUTHEAST TO THE SOUTHERN  
PLAINS ALONG WITH DAYTIME HEATING WILL AID IN PRODUCING SCATTERED  
SHOWERS AND THUNDERSTORMS FROM PARTS OF THE WESTERN GULF COAST  
EASTWARD TO THE SOUTHEAST THROUGH SATURDAY EVENING. IN ADDITION,  
THE NORTHERN PORTION OF A FRONT EXTENDING FROM THE UPPER GREAT  
LAKES SOUTHWESTWARD TO THE CENTRAL PLAINS WILL MOVE EASTWARD TO  
THE LOWER GREAT LAKES/EASTERN ONTARIO BY SATURDAY NIGHT. THE  
WESTERN PORTION OF THE FRONT WILL BE QUASI-STATION THROUGH  
SATURDAY EVENING INTO SUNDAY. SHOWERS AND THUNDERSTORMS WILL  
DEVELOP ALONG THE BOUNDARY OVER THE UPPER GREAT LAKES INTO THE  
MIDDLE MISSOURI VALLEY THAT WILL MOVE EASTWARD TO THE LOWER GREAT  
LAKES/NORTHEAST BY SATURDAY NIGHT. ALONG THE WESTERN END OF THE  
FRONT, SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND NEAR THE  
BOUNDARY FROM THE MIDDLE MISSOURI VALLEY TO THE CENTRAL PLAINS  
THROUGH SUNDAY MORNING.  
 
MEANWHILE, MONSOONAL MOISTURE AND DAYTIME HEATING WILL AID IN  
PRODUCING SHOWERS AND THUNDERSTORMS OVER PARTS OF THE SOUTHWEST,  
SOUTHERN ROCKIES, AND PARTS OF THE GREAT BASIN THROUGH SATURDAY  
EVENING. THE GREATEST AREAL COVERAGE OF THE SHOWERS AND  
THUNDERSTORMS WILL BE DURING THE LATE AFTERNOON INTO LATE EVENING  
FRIDAY INTO SATURDAY. ADDITIONALLY, A FRONT MOVING SOUTHWARD OUT  
OF WESTERN CANADA WILL MOVE INTO THE NORTHERN HIGH PLAINS ON  
SATURDAY MORNING MOVING INTO THE NORTHERN PLAINS BY SATURDAY  
EVENING. SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG THE  
BOUNDARY OVER PARTS OF NORTHERN PLAINS INTO PARTS OF THE NORTHERN  
HIGH PLAINS ON SATURDAY EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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