161  
FXUS01 KWBC 150757  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
356 AM EDT WED AUG 15 2018  
 
VALID 12Z WED AUG 15 2018 - 12Z FRI AUG 17 2018  
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  
THE CENTRAL/NORTHERN PLAINS.  
 
...HEAVY RAIN POSSIBLE FOR PARTS OF THE WESTERN OHIO VALLEY INTO  
PARTS OF THE LOWER MISSISSIPPI VALLEY...  
   
..HEAVY RAIN POSSIBLE FOR PARTS OF THE NORTHERN PLAINS
 
 
A FRONT EXTENDING FROM THE NORTHEAST ACROSS THE GREAT LAKES THEN  
SOUTHWESTWARD TO PARTS OF THE SOUTHERN PLAINS HAS A WAVE OF LOW  
PRESSURE OVER MIDDLE MISSISSIPPI VALLEY THAT WILL MOVE  
NORTHEASTWARD TO THE GREAT LAKES BY THURSDAY EVENING. THE SYSTEM  
WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS OF THE  
MIDDLE/LOWER MISSISSIPPI VALLEY AND PARTS OF THE SOUTHERN PLAINS  
THAT WILL MOVE NORTHEASTWARD TO THE GREAT LAKES/OHIO VALLEY AND  
PARTS OF NORTHERN MID-ATLANTIC AS WELL AS PARTS OF THE  
LOWER/MIDDLE MISSISSIPPI VALLEY BY THURSDAY EVENING. ALONG THE  
FRONT, SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND NEAR THE  
BOUNDARY FROM PARTS OF THE NORTHEAST TO THE UPPER GREAT LAKES THAT  
WILL MOVE OFF THE NORTHEAST COAST BY THURSDAY MORNING. IN  
ADDITION, UPPER-LEVEL ENERGY OVER PARTS OF THE NORTHERN HIGH  
PLAINS WILL MOVE SOUTHEASTWARD TO PARTS OF THE MIDDLE MISSISSIPPI  
VALLEY BY THURSDAY EVENING. THE ENERGY WILL PRODUCE SHOWERS AND  
THUNDERSTORMS OVER PARTS OF THE NORTHERN PLAINS THAT WILL MOVE  
EASTWARD INTO THE NORTHERN/CENTRAL PLAINS AND PARTS OF THE UPPER  
MISSISSIPPI VALLEY BY THURSDAY EVENING.  
 
MEANWHILE, UPPER-LEVEL ENERGY OVER PARTS OF THE LOWER MISSISSIPPI  
VALLEY WILL MOVE EASTWARD INTO THE TENNESSEE VALLEY/CENTRAL GULF  
COAST BY THURSDAY. THE ENERGY WILL AID IN DEVELOPING SHOWERS AND  
THUNDERSTORMS OVER PARTS OF THE CENTRAL GULF COAST FROM WEDNESDAY  
MORNING INTO THURSDAY EVENING. ADDITIONALLY, TROPICAL MOISTURE  
OVER PARTS OF THE SOUTHEAST WILL AID IN PRODUCING SHOWERS AND  
THUNDERSTORMS THROUGH THURSDAY. ELSEWHERE, MONSOONAL MOISTURE AND  
DAYTIME HEATING WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS  
OVER PARTS OF THE SOUTHWEST/GREAT BASIN AND THE CENTRAL/SOUTHERN  
ROCKIES THROUGH THURSDAY EVENING. THE SHOWERS AND THUNDERSTORMS  
WILL HAVE THE GREATEST AREAL COVERAGE DURING THE LATE AFTERNOON  
INTO THE LATE EVENING ON WEDNESDAY AND THURSDAY.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab HPC Page Main Text Page