856  
FXUS01 KWBC 241940  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
239 PM EST FRI NOV 24 2017  
 
VALID 00Z SAT NOV 25 2017 - 00Z MON NOV 27 2017  
 
...HEAVY RAINFALL POSSIBLE ACROSS THE PACIFIC NORTHWEST AND  
NORTHERN CALIFORNIA...  
 
...WELL ABOVE NORMAL TEMPERATURES ACROSS THE WESTERN AND CENTRAL  
U.S. THROUGH THE WEEKEND...  
 
THE NORTHWESTERN U.S. WILL REMAIN WET OVER THE WEEKEND, AS A LOW  
PRESSURE SYSTEM APPROACHES AND ONSHORE FLOW STRENGTHENS, BRINGING  
PLENTY OF MOISTURE TO THE AREA. RAIN CHANCES ARE FORECAST TO  
INCREASE ACROSS THE PACIFIC NORTHWEST ON SATURDAY, SPREADING  
EASTWARD INTO THE NORTHERN GREAT BASIN AND SOUTHWARD INTO NORTHERN  
CALIFORNIA ON SATURDAY NIGHT. LOCALLY HEAVY RAIN IS POSSIBLE. SOME  
SNOW IS EXPECTED TO MIX IN AT THE HIGHER ELEVATIONS, BUT SNOW  
ACCUMULATIONS ARE NOT FORECAST TO BE VERY HIGH THROUGH SUNDAY  
AFTERNOON--GENERALLY LESS THAN 6 INCHES IN THE NORTHERN CASCADES.  
MORE SNOW IS LIKELY JUST AFTER THE SHORT RANGE FORECAST PERIOD,  
HOWEVER.  
 
A COLD FRONT WILL SWEEP THROUGH THE EASTERN U.S. OVER THE NEXT  
COUPLE OF DAYS, WITH A SECONDARY FRONT MOVING THROUGH THE GREAT  
LAKES AND NORTHEAST BEHIND IT. SOME LIGHT RAIN AND SNOW IS  
EXPECTED FOR THE GREAT LAKES, NORTHERN MID-ATLANTIC, AND NORTHEAST  
DUE TO THESE FRONTS.  
 
TEMPERATURE-WISE, MUCH OF THE CONTINENTAL U.S. WILL BE WARMER THAN  
AVERAGE THIS WEEKEND, WITH HIGHS UP TO 20 DEGREES ABOVE AVERAGE IN  
THE SOUTHWEST ON SATURDAY. A FEW RECORD HIGHS ARE POSSIBLE THERE.  
TEMPERATURES 20 DEGREES ABOVE NORMAL SPREAD TO THE ROCKIES AND  
NORTHERN AND CENTRAL PLAINS BY SUNDAY, WITH MORE POSSIBILITIES FOR  
RECORD HIGHS AND RECORD HIGH MINIMUM TEMPERATURES. THE EASTERN  
U.S. WILL GENERALLY BE 5 TO 10 DEGREES ABOVE AVERAGE ON SATURDAY,  
BUT HIGH TEMPERATURES ARE FORECAST TO BE FEW DEGREES BELOW AVERAGE  
ON SUNDAY, RELATED TO THE COLD FRONTAL PASSAGE.  
 
TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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