760  
FXUS01 KWBC 070737  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
337 AM EDT FRI SEP 07 2018  
 
VALID 12Z FRI SEP 07 2018 - 12Z SUN SEP 09 2018  
 
...HEAVY RAIN POSSIBLE OVER PARTS OF THE OHIO VALLEY INTO THE  
MIDDLE MISSISSIPPI VALLEY...  
 
...HEAVY RAIN POSSIBLE OVER PARTS OF THE MID-ATLANTIC AND PARTS OF  
SOUTHERN PLAINS INTO PARTS OF THE LOWER MISSISSIPPI VALLEY...  
 
TROPICAL DEPRESSION GORDON IS FORECAST TO MOVE NORTHEASTWARD FROM  
PARTS OF THE LOWER MISSISSIPPI VALLEY TO THE MIDDLE MISSISSIPPI  
VALLEY BY SATURDAY EVENING. GORDON WILL BECOME EXTRATROPICAL BY  
SATURDAY MORNING. THE SYSTEM WILL PRODUCE SHOWERS AND  
THUNDERSTORMS OVER THE LOWER MISSISSIPPI VALLEY THAT WILL MOVE  
NORTHEASTWARD TO PARTS OF THE OHIO, TENNESSEE, AND MIDDLE  
MISSISSIPPI VALLEYS BY SATURDAY EVENING. A FRONT EXTENDING FROM  
THE MID-ATLANTIC TO THE MIDDLE MISSISSIPPI VALLEY SOUTHWESTWARD  
INTO THE SOUTHERN PLAINS WILL BE QUASI-STATIONARY WITH THE EASTERN  
PARTS OF THE BOUNDARY MOVING SOUTHWARD INTO THE SOUTHERN  
MID-ATLANTIC BY SATURDAY. THE WESTERN END OF THE FRONT WILL  
SLOWLY MOVE EASTWARD TO PARTS OF THE LOWER MISSISSIPPI  
VALLEY/WESTERN GULF COAST ALSO BY SATURDAY EVENING. SHOWERS AND  
THUNDERSTORMS WILL DEVELOP ALONG AND NEAR THE FRONT FROM THE  
MID-ATLANTIC TO THE CENTRAL/SOUTHERN PLAINS THAT WILL CONTINUE  
OVER THE MID-ATLANTIC INTO THE MIDDLE MISSISSIPPI VALLEY/TEXAS AS  
WELL AS LOWER MISSISSIPPI VALLEY BY SATURDAY EVENING INTO SUNDAY.  
IN ADDITION, TROPICAL MOISTURE OVER THE SOUTHEAST AND THE EASTERN  
GULF COAST WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS OVER  
THE REGION THROUGH SATURDAY EVENING.  
 
MEANWHILE, A FRONT JUST OFF THE PACIFIC NORTHWEST COAST WILL MOVE  
ONSHORE BY FRIDAY EVENING AND MOVE EASTWARD TO THE NORTHERN HIGH  
PLAINS INTO PARTS OF THE GREAT BASIN BY SATURDAY EVENING INTO  
SUNDAY. LIGHT RAIN WILL DEVELOP OVER PARTS OF THE PACIFIC  
NORTHWEST COAST BY FRIDAY EVENING THAT WILL EXPAND EASTWARD INTO  
THE NORTHERN INTERMOUNTAIN REGION BY SATURDAY. THE LIGHT RAIN  
WILL CONTINUE OVER PARTS OF THE PACIFIC NORTHWEST THROUGH SATURDAY  
EVENING INTO SUNDAY. SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER  
PARTS OF THE NORTHERN HIGH PLAINS/NORTHERN ROCKIES ON SATURDAY  
AFTERNOON MOVING INTO PARTS OF THE NORTHERN PLAINS BY SATURDAY  
EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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