586 
fxus61 kpbz 061833 
afdpbz 


Area forecast discussion 
National Weather Service Pittsburgh PA 
233 PM EDT Sat Sep 6 2008 


Synopsis... 


The remnants of Hanna will continue to move away from the region 
this evening...with showers ending. High pressure will then build 
in for Sunday. 


&& 


Near term /through Sunday/... 


Hanna remnants are pulling northeast...with clearing moving east 
through Ohio. The remaining shower bands over extreme eastern 
counties will pull east early. With troughing remaining 
Sunday...should see some clouds. Temperatures will be seasonal for 
this period. 


&& 


Short term /Sunday night through Monday/... 


A Flat Ridge of high pressure will allow for a few clouds...but 
airmass should be dry enough to keep precipitation at Bay. Near average 
temperatures can be expected. 


&& 


Long term /Monday night through Saturday/... 


NAM/GFS/sref show the frontal boundary continuing to slow down...with 
deep moisture not arriving until Tuesday for most areas. Will keep 
precipitation chances low Monday night...bringing a chance of showers 
area wide on Tuesday...lingering Tuesday evening for areas mainly 
south and east of Pittsburgh. High pressure will bring dry and 
cooler conditions for Wednesday and Thursday. European model (ecmwf)/GFS differ are 
in a little better agreement for next Friday/Saturday...bringing a 
front/chance of showers across the region Friday...with conditions 
drying for Saturday. 


&& 


Aviation /18z Saturday through Thursday/... 


Showers are diminishing across most areas as Hanna pushes to the 
northeast...with isolated/scattered showers stretching from just 
west of duj to northeast of mgw. These showers will diminish over 
the next 1-3 hours as the cold front gradually sweeps across. 
MVFR/IFR conditions are persisting southwest PA...with conditions 
beginning to slowly improve across eastern Ohio behind the cold 
front. Conditions will improve by later this afternoon for most areas as 
the cold front pushes to the east. Areas of IFR conditions in fog 
are expected again overnight/early Sunday morning. 


Other than for some early morning fog...flat ridging will bring 
mainly VFR conditions for Sunday afternoon through Monday. The next cold 
front will cross the area Tuesday bringing scattered showers and 
thunderstorms and the potential for restrictions. VFR conditions 
should prevail Wednesday and Thursday under high pressure. 


&& 


Pbz watches/warnings/advisories... 
Maryland...none. 
Ohio...none. 
PA...none. 
WV...none. 


&& 


$$