333  
FXUS61 KPBZ 210000 AAA  
AFDPBZ  
 
AREA FORECAST DISCUSSION...UPDATED  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
700 PM EST THU FEB 20 2020  
   
SYNOPSIS
 
 
HIGH PRESSURE WILL MAINTAIN DRY CONDITIONS, WITH MODERATING  
TEMPERATURE THROUGH THE WEEKEND.  
 

 
   
NEAR TERM /THROUGH FRIDAY/
 
 
ONLY MINOR CHANGES FOR THE EVENING UPDATE. AREA OF SCATTERED SNOW  
SHOWERS/FLURRIES, SOUTH AND EAST OF PIT, CONTINUES TO DRIFT  
SOUTHEASTWARD WITH AN EXITING SHORTWAVE. FURTHER NORTH, LINGERING  
LAKE ENHANCED SNOW FLURRIES CONTINUE TO FALL NEAR THE I-80 CORRIDOR.  
WILL HOLD ON TO THE FLURRIES FOR A SMALL PERIOD THIS EVENING, BEFORE  
BRINGING EVERYTHING TO AN END. CLOUDS WERE MODIFIED BASED ON LATEST  
SATELLITE IMAGES AND MODEL DATA.  
 
PREVIOUS DISCUSSION...  
OVERNIGHT LOWS WILL AVERAGE 10 DEGREES BELOW NORMAL ACROSS THE  
REGION WITH DECREASING CLOUD COVERAGE AND LESSENING WINDS.  
 

 
   
SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/
 
 
BROAD HIGH PRESSURE WILL MAINTAIN DRY WEATHER THROUGH SUNDAY WITH  
GRADUAL TEMPERATURE MODERATION. NO REAL CHANGE WAS MADE TO THE  
WEEKEND FORECAST.  
 

 
   
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
 
 
PRECIPITATION CHANCE IS FORECAST TO INCREASE AGAIN BY MONDAY AS  
SOUTHERN STREAM LOW PRESSURE EMERGES FROM THE PLAINS AND DIGS UP THE  
OHIO VALLEY AS IT WEAKENS. WITH COLDER AIR LOCKED NORTHWARD VIA THE  
NORTHERN STREAM OF THE JET, AND WITH WARM ADVECTION ON THE VAN OF THE  
LOW, PRECIPITATION WITH THAT EVENT SHOULD PRIMARILY BE RAIN.  
 
MODELS AGREE THAT AN AMPLIFYING, AND ENCROACHING UPPER TROUGH IS  
LIKELY TO CONTINUE PRECIPITATION CHANCES INTO MIDWEEK AND THEN BRING  
COLDER WEATHER TO THE REGION.  
 

 
   
AVIATION /23Z THURSDAY THROUGH TUESDAY/
 
 
VFR IS EXPECTED THROUGH THE PERIOD WITH HIGH PRESSURE.  
   
OUTLOOK
 
 
RESTRICTIONS WILL BE POSSIBLE LATE SUNDAY WITH THE APPROACH OF LOW  
PRESSURE.  
 

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

 
 

 
 
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