Synopsis:
Strong storms likely in Western PA tonight ahead of a frontal passage. Most areas will see rain tonight and again on Wednesday, before skies will clear for the latter half of the week. Temperatures remain mild on Tuesday, begin their slide on Wednesday and spend the rest of the week recovering back to near-normal levels.
Short-Term:
A tornado watch was issued for the northwest corner of the state earlier this afternoon. It is in effect until 11PM EST. Some strong to severe storms will roll through the western part of the state as we go through the evening hours, fueled along by an upper-level jet streak. They should begin to die out later in the evening. Most areas of the state will likely see some rainfall during the overnight hours as the front passes to our south diagonally across the state. Drier conditions will prevail on Tuesday, though partly cloudy skies should remain throughout the day. Temperatures will remain mild on Tuesday, with most locations across PA remaining about 10 degrees above average.
Long-Term:
Our next piece of energy, will work its way across the country and be just to our south by Wednesday morning, ushering more rain into the area. The precipitation should fall entirely as rain, as temperatures will not be cold enough for snowfall likely anywhere. Temperatures begin their downward tumble on Wednesday, falling back near normal levels. As the low slides off to our east Wednesday night, clearing skies should prevail. A strong surface high will position itself just to our south beginning on Thursday, where it will remain for the next several days. Expect cold temperatures through the end of the work week, continuing to moderate back towards average each day. Guidance from the 12z GFS suggests our next weather-maker past Wednesday does not approach the area until Sunday. This system could usher in some lingering lake-effect snow showers in its wake, though exact details on this are still several days away.
~Devin Boyer
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