910  
FXUS01 KWBC 081910  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
210 PM EST WED NOV 08 2017  
 
VALID 00Z THU NOV 09 2017 - 00Z SAT NOV 11 2017  
 
   
..HEAVY SNOW POSSIBLE OVER PORTIONS OF THE GREAT LAKES
 
 
...WELL BELOW NORMAL TEMPERATURES FROM THE NORTHERN PLAINS TO THE  
MID-ATLANTIC...  
 
...UNSETTLED AND WET CONDITIONS EXPECTED TO PERSIST THE NEXT FEW  
DAYS FOR THE NORTHWEST U.S....  
 
UPPER LEVEL ENERGY SWEEPING THROUGH THE DEEP SOUTH TONIGHT AND  
TOMORROW WILL KEEP SHOWERS IN THE FORECAST FROM THE LOWER  
MISSISSIPPI VALLEY EASTWARD THROUGH THE SOUTHEAST. EMBEDDED  
THUNDERSTORMS ARE POSSIBLE ALONG WITH MODERATE TO LOCALLY HEAVY  
RAINFALL. TEMPERATURES ACROSS THE REGION WILL BE BELOW NORMAL  
AGAIN ON THURSDAY, EVENTUALLY MODERATING TO NEAR NORMAL BY FRIDAY.  
 
IN THE NORTHERN STREAM, A VIGOROUS COLD FRONT DROPPING SOUTHWARD  
ACROSS THE MIDWEST TONIGHT WILL ALLOW FOR MAINLY LIGHT  
ACCUMULATING SNOWFALL ACROSS PORTIONS OF THE UPPER GREAT LAKES  
THIS EVENING AND INTO THURSDAY. FAVORABLE FLOW OVER THE STILL  
RELATIVELY WARM LAKES HOWEVER COULD BRING SOME LAKE ENHANCED  
SNOWS, ESPECIALLY ACROSS PARTS OF THE UPPER PENINSULA OF MICHIGAN  
WHERE WINTER WEATHER ADVISORIES AND WINTER STORM WARNINGS ARE IN  
EFFECT FOR UPWARDS OF 6 INCHES OF SNOW. THE REAL STORY WITH THIS  
FRONT HOWEVER WILL BE THE MODIFIED ARCTIC AIRMASS BEING USHERED IN  
BEHIND THE FRONT, INITIALLY ACROSS THE NORTHERN PLAINS, BUT  
EVENTUALLY MOVING INTO THE OHIO VALLEY AND THE  
MID-ATLANTIC/NORTHEAST BY THE END OF THE WORK WEEK. TEMPERATURES  
WITHIN THIS AIRMASS WILL BRING AFTERNOON HIGHS ACROSS THESE  
REGIONS DOWN AS MUCH AS 10 TO 20 DEGREES BELOW NORMAL. THIS COULD  
MEAN DAY TIME TEMPERATURES STRUGGLING TO GET OUT OF THE TEENS ON  
THURSDAY, ESPECIALLY ACROSS FAR NORTHERN NORTH DAKOTA AND  
MINNESOTA.  
 
FINALLY, OUT WEST, A FRONTAL SYSTEM MOVING INTO THE PACIFIC  
NORTHWEST THIS AFTERNOON WILL KEEP WET WEATHER IN THE FORECAST  
ACROSS MUCH OF THE NORTHWEST STATES AND INTO THE ROCKIES THROUGH  
THE REST OF THE WEEK. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE FOR  
COASTAL AREAS OF THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA,  
WITH SNOW EXPECTED IN THE HIGHEST ELEVATIONS OF THE CASCADES AND  
INTO THE INTERMOUNTAIN WEST/NORTHERN ROCKIES. ACROSS NORTHEAST  
WASHINGTON AND INTO NORTHWEST MONTANA, SOME LIGHT FREEZING RAIN  
MAY ALSO BE POSSIBLE IN SOME OF THE LOWER ELEVATIONS.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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