175  
FXUS01 KWBC 020806  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
405 AM EDT THU NOV 02 2017  
 
VALID 12Z THU NOV 02 2017 - 12Z SAT NOV 04 2017  
 
...COLDER AND UNSETTLED WEATHER TO ARRIVE ACROSS THE PACIFIC  
NORTHWEST AND NORTHERN ROCKIES THROUGH THE END OF THE WEEK WITH  
HEAVY MOUNTAIN SNOWFALL ANTICIPATED...  
 
...HEAVY RAINS ARE EXPECTED TO ARRIVE ACROSS NORTHERN CALIFORNIA  
BY THIS WEEKEND...  
 
...WARMER TEMPERATURES ARE EXPECTED FOR THE SOUTHERN AND EASTERN  
UNITED STATES OVER THE NEXT COUPLE OF DAYS...  
 
THE MAIN THEME OVER THE NEXT COUPLE OF DAYS WILL BE A TRANSITION  
TO UNSETTLED AND STORMY WEATHER ACROSS MUCH OF THE PACIFIC  
NORTHWEST, THE NORTHERN ROCKIES AND PARTS OF THE NORTHERN PLAINS  
AS A STRONG TROUGH OF LOW PRESSURE ARRIVES ACROSS THE NORTHWEST  
U.S. AND USHERS IN SOME SUBSTANTIALLY COLDER TEMPERATURES AND ALSO  
A BROAD AREA OF PRECIPITATION INCLUDING HEAVY SNOWFALL. SOME OF  
THE HEAVIEST SNOWFALL WILL OCCUR OVER THE CASCADES AND INTO  
BITTERROOTS OF THE NORTHERN ROCKIES. SOME HEAVY SNOWFALL IS ALSO  
EXPECTED TO STREAK OUT ACROSS PARTS OF THE NORTHERN PLAINS THROUGH  
THE END OF THE WEEK AS LOW PRESSURE GRADUALLY TRAVERSES THE  
INTERMOUNTAIN WEST. TEMPERATURES ACROSS SOME OF THESE AREAS ARE  
EXPECTED TO FALL TO AS MUCH AS 20 DEGREES BELOW NORMAL BY THE END  
OF THE WEEK. BY THIS WEEKEND, EXPECT HEAVY RAIN ASSOCIATED WITH  
THE SAME STORM SYSTEM TO IMPACT NORTHERN CALIFORNIA AS A COLD  
FRONT SETTLES SOUTH DOWN ALONG THE WEST COAST.  
 
MEANWHILE, THE WEATHER FOR THE NEXT COUPLE OF DAYS WILL BE MUCH  
WARMER ACROSS THE SOUTHERN AND EASTERN U.S. AS SOUTHERLY FLOW  
AHEAD OF A COLD FRONT WILL ALLOW WARMER TEMPERATURES AND A TOUCH  
OF HUMIDITY TO RETURN NORTH FROM THE GULF COAST STATES.  
TEMPERATURES WILL BE LOCALLY AS MUCH AS 10 TO 20 DEGREES ABOVE  
NORMAL. A FRONTAL ZONE MOVING ACROSS THE MIDWEST WILL MOVE TOWARD  
THE OHIO VALLEY AND WILL HELP FOCUS AN AXIS OF SHOWERS AND  
POSSIBLY A FEW THUNDERSTORMS ACROSS THESE AREAS, WITH THE HEAVIEST  
OF THE RAIN TENDING TO FOCUS OVER THE GREAT LAKES REGION AS LOW  
PRESSURE TRAVERSES THE REGION. IN THE WAKE OF THE COLD FRONT  
MOVING OFF TO THE EAST, TEMPERATURES WILL BE COOLING OFF TO NEAR  
OR SLIGHTLY BELOW NORMAL FOR THESE AREAS.  
 
ORRISON  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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