Synopsis
Rain showers will continue to push east across the state tonight. The associated cold front will move through the state behind the rain showers Tuesday morning and bring a change to scattered rain and snow showers across western Pennsylvania Tuesday night. The scattered snow showers will continue through Thursday morning as a northwesterly flow persists. A deep trough will dig south and bring cold air back to the region for the end of the week. We will need to keep an eye out for Saturday afternoon, as another system threatens the state with a chance for a wintry mix of precipitation.
Short Term (Monday Night thru Wednesday Night)
Scattered rain showers will continue to move across the state tonight as the associates cold front will push through Tuesday morning. Both the 18Z NAM and GFS agree with the rain showers exiting the state around 21Z on Tuesday. Some portions of the state could see over 1" of rain, with an average rainfall total of 0.5"-0.75" across the state. The cold front will bring scattered lake effect snow showers Tuesday night for the western portion of the state as a northwesterly flow sets up over the lakes. These scattered snow showers will persist through Thursday morning as a deep trough of cold air continues to dig south.
Long Term (Thursday into the Weekend)
Scattered lake effect snow showers will dissipate Thursday morning as the northwesterly flow weakens and high pressure moves in. Skies will begin to clear Thursday throughout the day setting up for partly clear skies Friday and warmer temperatures. A system could approach the area Saturday afternoon. We will need to watch closely, as the 18Z GFS is hinting at mixed precipitation across the state.
~Aaron Herbert
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