Aviation Forecasts and Information Page - NWS State College PA

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
The MCS across western PA this evening has largely decayed, 
with the main flight impacts being brief westerly wind gusts 
around 20-25 kts & spotty showers for the Central Mountains 
(primarily KAOO/KUNV) through 07-08Z Wednesday. Ceilings are 
expected to lower NW-SE as a cold front approaches, with highest
confidence in restrictions at KBFD/KJST. Downsloping W/NW winds
are expected to limit the extent of ceiling restrictions to 
MVFR elsewhere, with improvements to VFR after the front passes 
during the evening. 

There is high (~70-80%) confidence on SHRA/TSRA reforming 
during the late morning to early afternoon hours (mainly after 
16Z) with increasing coverage into the evening hours. Current 
SHRA mentions have been included at all terminals based on 
recent forecast/HREF/GLAMP model guidance with most uncertainty 
with respect to timing. In terms of TSRA coverage, the highest 
potential at this time is outlined across SE PA (MDT/LNS) where 
HREF highlights SBCAPE upwards of around 1000 J/kg, though 
SBCAPE around 500-1000 J/kg may support TSRA across 
KJST/KAOO/KUNV/KIPT as well, with PROB30s added to address this 
possibility. Locally gusty winds are possible as well given low-
level lapse rates around 8-9 C/km in the afternoon, though 
confidence is low regarding the extent and strength of wind 
gusts.

Winds shift northerly behind the frontal passage this evening, 
with anafrontal rain developing across South/East PA during the 
evening/overnight hours.

Outlook... 

Thu...Lingering showers across S PA, restrictions possible.

Fri...Restrictions likely with rain moving in from south to 
north, lasting into Fri night.

Sat-Sun...Restrictions likely with rain.

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