544  
FXUS61 KPBZ 231320  
AFDPBZ  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
820 AM EST THU NOV 23 2017  
   
SYNOPSIS
 
 
DRY WEATHER CAN THEN BE EXPECTED UNTIL THE APPROACH OF THE NEXT  
FRONT ON SATURDAY.  
 

 
   
NEAR TERM /THROUGH FRIDAY/
 
 
UPDATED TO MAKE MINOR CHANGES TO THE GRIDS, BUT THE FORECAST IS  
ON TRACK. A WEAK UPPER TROUGH WILL CROSS TODAY, PROVIDING ONLY  
MID AND UPPER CLOUDS. THESE WILL CLEAR OUT TONIGHT AS THE TROUGH  
DEPARTS, AND FRIDAY IS EXPECTED TO BE A MOSTLY SUNNY DAY,  
ALTHOUGH HIGH CLOUDS MAY APPROACH AGAIN LATE AS FLOW GOES ZONAL  
ALOFT AND LOW LEVEL WINDS INCREASE OUT OF THE SOUTH.  
TEMPERATURES WILL ALSO RECOVER BACK TO SEASONAL LEVELS FRIDAY  
AFTER BELOW NORMAL TEMPS TODAY.  
 

 
   
SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY/
 
 
A WEAK FRONT WILL PASS THROUGH THE FORECAST AREA SATURDAY. LIGHT  
PRECIPITATION WILL ACCOMPANY THE FRONT FOLLOWED BY SCATTERED  
SNOW SHOWERS ALONG AND NORTH OF THE I-80 CORRIDOR INTO SUNDAY  
MORNING.  
 

 
   
LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/
 
 
HIGH PRESSURE WILL BE THE DOMINANT FEATURE SUNDAY AND THROUGH  
THE FIRST PART OF NEXT WEEK...RESULTING IN DRY CONDITIONS AND A  
WARMING TREND IN TEMPERATURES. THE NEXT SYSTEM IS PROGGED TO  
IMPACT THE REGION IN THE MIDDLE OF NEXT WEEK.  
 

 
   
AVIATION /13Z THURSDAY THROUGH MONDAY/
 
 
VFR TO MVFR STRATOCU MAINLY N-E OF PIT SHOULD CONTINUE TO ERODE  
EARLY THIS MORNING OVERNIGHT UNDER BUILDING SURFACE HIGH  
PRESSURE AND BACKING WIND. VFR IS EXPECTED THROUGH THE REST OF  
THE TAF PERIOD, THOUGH A CROSSING UPPER TROUGH ABOVE THE  
SURFACE HIGH SHOULD RESULT IN AN INCREASE IN MID AND HIGH  
CLOUDS, BEFORE CLEARING OCCURS TONIGHT AS THE TROUGH EXITS.  
   
OUTLOOK
 
 
RESTRICTION POTENTIAL RETURNS WITH A SAT COLD FRONT, AND  
SUBSEQUENT COLD NW FLOW AND UPPER TROUGHING THROUGH EARLY SUN.  
 

 
   
PBZ WATCHES/WARNINGS/ADVISORIES
 
 
MD...NONE.  
OH...NONE.  
PA...NONE.  
WV...NONE.  
 

 
 

 
 
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