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-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KPBZ 230432 AAC
AFDPBZ

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1232 AM EDT WED APR 23 2014

.SYNOPSIS...
A COOLER PATTERN FOR THE REST OF THE WEEK. THE NEXT CHANCE FOR
SHOWERS WILL ARRIVE FRIDAY WITH THE PASSAGE OF ANOTHER FRONT.

&&

.NEAR TERM /THROUGH TODAY/...
FOR OVERNIGHT...HAVE MADE SOME ADJUSTMENT TO POPS AND CLOUDS. THE
EXTENSION OF THE POPS WAS MADE USING THE PATH AND SPEED OF THE
STRONG SHORTWAVE TROUGH...WHICH WILL DIG THROUGH OVERNIGHT. AIR
ALOFT ASSOCIATED WITH THE TROUGH IS NOT PARTICULARLY COLD AND
USING THE LATEST CRITICAL THICKNESS...ALL PRECIP SHOULD REMAIN
LIQUID. TEMPS WERE UPDATED WITH THE LATEST LAMP NUMBERS.

SHORTWAVE TROUGH QUICKLY SWINGS EAST OF THE AREA AFTER DAWN. THE
COLD POOL ALOFT WILL BEGIN TO SLOWLY RECEDE NORTHWARD LATER THIS
MORNING...EXITING INTO THE NORTHEAST BY LATE AFTERNOON. WITH THE
WAA ALOFT...CLOUDS WILL DECREASE FROM SOUTH TO NORTH THROUGHOUT
THE DAY. A RETURN OF SUN WILL HELP WITH THE TEMPS...BUT THEY WILL
STILL END UP BELOW NORMAL.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY/...
DRY SURFACE HIGH WILL SWING THROUGH THE AREA TONIGHT AND THURSDAY.
AN OPTIMAL SETUP FOR RADIATIONAL COOLING TONIGHT ALLOWING FOR TEMPS
TO DROP WELL BELOW NORMAL.

TEMPS MODERATE THURSDAY WITH PLENTY OF SUNSHINE AND WEAK WAA.

FAST MOVING COOL FRONT WILL CROSS THE AREA LATE THURSDAY NIGHT AND
FRIDAY MORNING. SHOWERS WILL CROSS THE REGION WITH FRONTAL
PASSAGE. THE BOUNDARY IS ASSOCIATED WITH AN OCCLUDED SYSTEM WHICH
WILL SWING THROUGH THE UPPER GREAT LAKES ON FRIDAY. DUE TO THE
OVERALL STRUCTURE OF THE SYSTEM...THE AIR BEHIND THE FRONT IS NOT
MUCH COOLER THEN THE AIR MASS THAT WILL BE IN PLACE AHEAD OF IT.
THERE WILL BE A WIND SHIFT...BUT TEMPS WILL RECOVER NICELY FRIDAY
WITH PLENTY OF SUNSHINE IN THE AFTERNOON.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A SECONDARY FRONT WILL SWING THROUGH LATE FRIDAY NIGHT. THIS FRONT
WILL HAVE MUCH STRONGER CAA BEHIND IT. WILL INCLUDE CHANCE POPS
WITH THE PASSAGE OF THIS BOUNDARY FRIDAY NIGHT. CHANCE POPS
THROUGH SATURDAY IN THE COLDER AIR MASS. SUNDAY LOOKS TO BE MAINLY
DRY AND COOL. LARGE AND COMPLEX SYSTEM DEVELOPING IN THE CENTRAL
PLAINS EARLY NEXT WEEK WITH MODELS HAVING TIMING ISSUES. FOR NOW
WENT WITH A DRY DAY TO START THE WORK WEEK. TEMPERATURES GENERALLY
BELOW AVERAGE FOR THE PERIOD.

&&

.AVIATION /04Z WEDNESDAY THROUGH SUNDAY/...
SHOWERS HAVE CLEARED ALL TERMINALS TO THE EAST LEAVING MAINLY VFR
CONDITIONS IN THEIR WAKE WITH GUSTY NW WINDS. SOME ADDITIONAL COLD
ADVECTION STRATOCUMULUS ARE FORECAST TO MOVE OVER THE AREA
OVERNIGHT...HOWEVER THEY SHOULD QUICKLY MIX OUT ON
WEDNESDAY...YIELDING TO VFR CONDITIONS WITH OCCASIONALLY GUSTY
NORTHWEST WINDS STILL AFFECTING ALL TERMINALS. FRIES

.OUTLOOK.../WEDNESDAY NIGHT THROUGH SATURDAY/...
VFR CONDITIONS WILL CONTINUE UNTIL AT LEAST FRIDAY.

&&

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

&&

$$