Cold air is on the march from Western PA towards the east coast. With this distrubance, snow has been accompanying it. I had mentioned last night about a Nurlon Trough potentially moving through as well. Both look to be heading to the east. In fact, the volatility of the squall lines is already impressive. Below is a video from Purcellville, VA. An intense squall came through and actually had some thunder with it. In any case, this is a very real potential to happen here. These squalls will last 20-30 minutes and will be accompanied by very heavy snows. More to come as this moves to the east....just wanted to let everyone know we may have another round move through this evening.
Purcellville, VA Thundersnow
Very good article on what a Nurlon trough is and the intenisty they can bring:
Nurlon Trough Info
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