422  
FXUS01 KWBC 082003  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
403 PM EDT SUN JUL 08 2018  
 
VALID 00Z MON JUL 09 2018 - 00Z WED JUL 11 2018  
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  
THE UPPER MISSISSIPPI VALLEY AND PARTS OF THE SOUTHWEST...  
 
A FRONT EXTENDING FROM THE UPPER MISSISSIPPI VALLEY SOUTHWESTWARD  
TO PARTS OF THE GREAT BASIN WILL MOVE EASTWARD INTO THE NORTHEAST  
SOUTHWESTWARD TO THE OHIO VALLEY AND NORTHWESTWARD TO THE NORTHERN  
HIGH PLAINS BY TUESDAY. SHOWERS AND THUNDERSTORMS WILL DEVELOP  
ALONG AND AHEAD OF THE BOUNDARY FROM PARTS OF THE UPPER GREAT  
LAKES/UPPER MISSISSIPPI VALLEY INTO PARTS OF THE NORTHERN PLAINS  
THAT WILL MOVE EASTWARD INTO NORTHERN NEW ENGLAND ACROSS PARTS OF  
THE OHIO VALLEY INTO PARTS OF THE NORTHERN PLAINS BY TUESDAY.  
ELSEWHERE ALONG THE WESTERN EDGE OF THE AFOREMENTIONED FRONT,  
SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE NORTHERN  
HIGH PLAINS/ROCKIES ALSO THROUGH TUESDAY. FURTHERMORE,  
UPPER-LEVEL ENERGY WILL MOVE ONSHORE OVER THE PACIFIC NORTHWEST  
MONDAY AFTERNOON INTO TUESDAY. THE ENERGY WILL AID IN PRODUCING  
LIGHT RAIN OVER PARTS OF THE PACIFIC NORTHWEST MONDAY EVENING INTO  
TUESDAY.  
 
MEANWHILE, TROPICAL MOISTURE EXTENDING FROM THE SOUTHEAST TO THE  
SOUTHERN PLAINS ALONG WITH UPPER-LEVEL IMPULSES AND DAYTIME  
HEATING WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS FROM PARTS  
OF THE SOUTHERN PLAINS INTO THE SOUTHEAST THROUGH TUESDAY. A  
DIURNAL SPIKE IN THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE  
MIDDLE MISSISSIPPI AND THE SOUTHERN OHIO VALLEYS ALSO THROUGH  
TUESDAY. ADDITIONALLY, MONSOONAL MOISTURE AND DAYTIME HEATING  
WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS OF THE  
CENTRAL/SOUTHERN ROCKIES AND PARTS OF THE GREAT BASIN/SOUTHWEST  
THROUGH TUESDAY. THE AREAL COVERAGE OF THE THUNDERSTORMS WILL BE  
AT THE GREATEST DURING THE LATE AFTERNOON INTO THE LATE EVENING ON  
SUNDAY AND MONDAY.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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