356  
FXUS61 KPBZ 150040  
AFDPBZ  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
840 PM EDT FRI AUG 14 2020  
   
SYNOPSIS
 
 
PRECIPITATION CHANCES WILL INCREASE OVERNIGHT AND REMAIN THROUGH  
THE WEEKEND WITH THE BEST CHANCE FOR SHOWERS SOUTH OF PITTSBURGH  
SATURDAY AFTERNOON. DRY CONDITIONS ARE EXPECTED FOR MUCH OF NEXT  
WEEK WITH SEASONABLE TEMPERATURE.  
 

 
   
NEAR TERM /UNTIL 6 AM SATURDAY MORNING/
 
 
CHANGES FOR THE EVE UPDATE WERE PRIMARILY COSMETIC AS SHORTWAVE  
RIDGING WILL KEEP MOST OF THE REGION DRY INTO EARLY SATURDAY. CLOUD  
COVER AND AN GENERALLY WARM ATMOSPHERIC COLUMN WILL HOLD LOWS ABOUT 5  
DEGREES ABOVE THE AVERAGES DESPITE LOWER DEWPOINTS.  
 
RAIN CHANCE WILL BE INCREASING FROM THE SOUTH TOWARD MORNING WITH THE  
APPROACH OF LOW PRESSURE.  
 

 
   
SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/
 
 
AFOREMENTIONED LOW PRESSURE THAT IS PROPAGATING EASTWARD AND IS SUPPORTED  
BY JET CIRCULATION WILL PROVIDE BROAD SUPPORT FOR ASCENT ACROSS THE  
AREA EARLY SATURDAY, WITH MOSTLY CLOUDY SKIES AND LIGHT PRECIPITATION  
EXPECTED FOR PITTSBURGH AND SOUTH THROUGHOUT SATURDAY. AS THE CENTER  
OF LOW PRESSURE PASSES TO THE SOUTH, WV AND SOUTHERN PA COUNTIES  
HAVE THE MOST POTENTIAL TO PICK UP QUITE A BIT OF RAIN, WITH SOME  
SPOTS SEEING AN INCH OR MORE. FLOODING IS NOT CONSIDERED A  
SUBSTANTIAL THREAT AS PRECIPITATION WILL FALL DURING AN EXTENDED  
PERIOD OF TIME, WITH THE EXCEPTION BEING VULNERABLE AREAS THAT HAVE  
SEEN HEAVY RAIN THE LAST FEW DAYS.  
 
A COLD FRONT ASSOCIATED WITH LOW PRESSURE OVER HUDSON BAY WILL MOVE  
THROUGH LATE SUNDAY NIGHT, AND MAY OFFER A FEW SHOWERS PRIOR TO ITS  
PASSAGE.  
 

 
   
LONG TERM /MONDAY THROUGH FRIDAY/
 
 
HIGH PRESSURE AND A RELAXED HEIGHT PATTERN WILL SUPPORT DRY  
CONDITIONS THROUGH MOST OF THE LONG TERM.  
 

 
   
AVIATION /01Z SATURDAY THROUGH WEDNESDAY/
 
 
LOW PRES WILL ADVANCE NORTHEASTWARD EARLY TOMORROW MORNING AND  
DEGRADE CONDITIONS FROM PIT SOUTHWARD. DEPENDING ON SATURATION  
TIMING, CEILINGS MAY MAINTAIN VFR TIL MID-MRNG AT PIT/AGC, BUT WILL  
LIKELY FALL RAPIDLY TO MVFR/IFR TO THE SOUTH AS RAIN BECOMES  
PREVALENT.  
   
OUTLOOK
 
 
RESTRICTIONS ARE LIKELY SOUTH OF PIT INTO SUNDAY AS THE LOW SLOWLY  
TRACKS EASTWARD.  
 

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

 
 

 
 
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