Another warm January day is expected across the state with some late afternoon showers likely across Western Pennsylvania. For Eastern Pennsylvania, the showers will hold off until the nighttime hours. The rain will be on the light side.

The coastal storm for Monday is still expected to remain out to sea, however an inverted trough is beginning to show up on model guidance that could produce light snow for some areas Monday evening into Tuesday morning. Inverted troughs are very hard to predict. They usually produce a narrow swath of accumulating snowfall. In this swath, it is possible for a few inches of snowfall. With that being said, we will likely not know where this inverted trough will setup until Monday morning.

We are going to watch this afternoon’s guidance come in. If they continue to show a grow in confidence of an inverted trough setting up somewhere over the area Monday evening into Tuesday morning, we will have a full update on this system later this evening. For now, below is the latest NAM model for 4:00 AM Tuesday morning: 

Our attention then turns to another storm that could produce a wider swath of snow late next week. Too early for details, but we will have updates throughout the week as we track that system.

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Josh has been passionate about weather as long as his memory dates! From watching the Weather Channel at age 7, to making hand-drawn hurricane maps at age 11, starting his first weather site at 13, and founding PWA at 15 and forecasting for the state for the past 9 years, Josh's interest in weather has never dwindled! As difficult as it is, he greatly enjoys forecasting for Pennsylvania due to its countless microclimates. The state is an East Coast severe weather hotspot and nearly always home to the rain/snow line during winter storms!
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