191  
FXUS01 KWBC 040849  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
448 AM EDT SAT NOV 04 2017  
 
VALID 12Z SAT NOV 04 2017 - 12Z MON NOV 06 2017  
 
...HEAVY RAIN POSSIBLE FROM THE OHIO VALLEY TO THE LOWER GREAT  
LAKES/NORTHERN APPALACHIANS...  
 
...HEAVY SNOW POSSIBLE ACROSS PORTIONS OF THE NORTHERN/CENTRAL  
ROCKIES...  
   
..SNOW OVER THE CASCADES AND HIGHEST ELEVATIONS OF THE SIERRAS
 
 
...TEMPERATURES WILL BE 10 TO 25 DEGREES BELOW AVERAGE OVER PARTS  
OF THE NORTHERN ROCKIES/NORTHERN HIGH PLAINS...  
 
UPPER-LEVEL ENERGY OVER THE MIDDLE/UPPER MISSISSIPPI VALLEY AND  
THE UPPER GREAT LAKES/WESTERN OHIO VALLEY WILL MOVE EASTWARD AND  
WEAKEN BY SUNDAY MORNING. AN AREA OF RAIN AND THUNDERSTORMS WILL  
DEVELOP OVER PARTS OF THE UPPER MISSISSIPPI VALLEY/UPPER GREAT  
LAKES INTO PARTS OF THE WESTERN OHIO AND MIDDLE MISSISSIPPI  
VALLEYS THAT WILL EXTEND SOUTHWARD TO PARTS OF THE LOWER  
MISSISSIPPI VALLEY/TENNESSEE VALLEY BY SATURDAY EVENING AS SHOWERS  
MOVE INTO PARTS OF THE MID-ATLANTIC/SOUTHEAST. THE AREA OF RAIN  
AND THUNDERSTORMS WILL REMAIN OVER PARTS OF THE GREAT LAKES/OHIO  
VALLEY INTO PARTS OF THE MID-ATLANTIC/NORTHERN APPALACHIANS BY  
SUNDAY MORNING. ON SUNDAY A FRONT FROM THE WEST WILL CATCH UP TO  
THE AREA OF RAIN AND THUNDERSTORMS AIDING IN PRODUCING SHOWERS AND  
THUNDERSTORMS ALONG AND AHEAD OF THE BOUNDARY FROM THE LOWER GREAT  
LAKES/NORTHERN APPALACHIANS SOUTHWESTWARD INTO THE OHIO  
VALLEY/GREAT LAKES AND PARTS OF THE MIDDLE MISSISSIPPI VALLEY BY  
SUNDAY EVENING.  
 
MEANWHILE, A REGION OF MUCH STRONGER UPPER-LEVEL ENERGY OVER THE  
NORTHERN HIGH PLAINS/NORTHERN ROCKIES INTO NORTHERN CALIFORNIA  
WILL MOVE EASTWARD TO THE UPPER GREAT LAKES TO THE NORTHERN HIGH  
PLAINS/MIDDLE MISSOURI VALLEY BY SUNDAY EVENING. THE ENERGY WILL  
INDUCE A FRONT OVER UPPER GREAT LAKES/UPPER MISSISSIPPI VALLEY  
SOUTHWESTWARD INTO THE CENTRAL PLAINS ON SUNDAY MORNING MOVING TO  
THE GREAT LAKES/WESTERN OHIO VALLEY AND MIDDLE MISSISSIPPI  
VALLEY/SOUTHERN PLAINS BY SUNDAY EVENING INTO MONDAY. THE ENERGY  
WILL AID IN PRODUCING SNOW AND LOWER ELEVATION RAIN OVER PARTS OF  
THE NORTHERN HIGH PLAINS/NORTHERN ROCKIES INTO THE PARTS OF THE  
GREAT BASIN/NORTHERN CALIFORNIA THAT WILL MOVE INTO THE NORTHERN  
PLAINS BY SATURDAY EVENING. THE RAIN AND HIGHER ELEVATION SNOW  
OVER NORTHERN CALIFORNIA/GREAT BASIN WANES OVERNIGHT SATURDAY AS  
SNOW AND RAIN MOVES INTO THE UPPER GREAT LAKES/UPPER MISSISSIPPI  
VALLEY BY SUNDAY MORNING. THE FRONT ASSOCIATED WITH THE ENERGY  
DEVELOPS OVERNIGHT SATURDAY OVER THE UPPER GREAT LAKES/UPPER  
MISSISSIPPI VALLEY INTO THE CENTRAL PLAINS THAT WILL MOVE TO THE  
GREAT LAKES/WESTERN OHIO VALLEY INTO PARTS OF THE MIDDLE  
MISSISSIPPI VALLEY/SOUTHERN PLAINS BY SUNDAY EVENING. THE SNOW  
WANES OVER THE UPPER MIDWEST ON SUNDAY AS RAIN DEVELOP ALONG THE  
BOUNDARY BECOMING SHOWERS AND THUNDERSTORMS OVER THE GREAT LAKES  
INTO THE MIDDLE MISSISSIPPI VALLEY BY SUNDAY EVENING.  
 
IN THE MEANTIME, UPPER-LEVEL ENERGY OVER THE NORTHEASTERN PACIFIC  
MOVES INTO THE PACIFIC NORTHWEST OVERNIGHT SATURDAY MOVING INTO  
NORTHERN ROCKIES/NORTHERN HIGH PLAINS BY SUNDAY EVENING. THE  
ENERGY WILL AID IN DEVELOPING ADDITIONAL RAIN AND HIGHER ELEVATION  
SNOW OVER PARTS OF THE PACIFIC NORTHWEST OVERNIGHT SATURDAY INTO  
SUNDAY. ON SUNDAY, SNOW WILL EXPAND EASTWARD INTO THE NORTHERN  
INTERMOUNTAIN REGION AND THE NORTHERN ROCKIES. SIMILARLY, RAIN  
AND HIGHER ELEVATIONS SNOW WILL MOVE INTO NORTHERN CALIFORNIA AND  
INTO PARTS OF THE CENTRAL ROCKIES.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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