Aviation Forecasts and Information Page - NWS State College PA

.AVIATION /06Z THURSDAY THROUGH MONDAY/...
Over the next few hours, visibility restrictions will begin to
intrude on Central PA TAf sites. Highest confidence in these
restrictions are at BFD, JST, AOO, and UNV as skies clear with
dry air filing in over the western 2/3rds of the Commonwealth 
tonight. Restrictions at IPT, MDT, and MDT later tonight and 
into the morning are more likely in the form of ceiling 
lowerings. These are most likely in the form of MVFR 
restrictions although may boarder on IFR at MDT and LNS as more 
moisture gets pumped in from the south.

As the sun comes out tomorrow, this will mix out widespread
restrictive mist/fog and low cloud ceilings. Restrictions are
likely to return in the form of numerous showers and
thunderstorms as a shortwave trough moves in from the Ohio River
Valley. Greatest coverage of storms is likely in the southern
tier of the state, particularly at MDT and LNS in the 
afternoon. With tall CAPE profiles, minimal capping, and PWATs 
approaching 2", repeating, scattered, heavy showers and 
thunderstorms are possible, leading to visibility restrictions 
as they pass. Isolated instances of gusty winds may also 
accompany these storms. 

In the wake of this convective activity, the moist low levels 
may lead to mist/fog developing over Southeast PA. At this 
time, the best chances for these restrictions from this fog/mist 
appear to be after 06Z so may introduce mentions in future TAF
packages. 


Outlook...

Fri...T-storm impacts likely during the afternoon. AM low 
clouds and fog possible. 

Sat...Reduced chance and more limited coverage of PM 
showers/t-storm.

Sun-Mon...Mainly VFR/no sig wx.

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