With the temperatures dropping and some places having wind chills well below freezing, you need to be careful. A blizzard is going to hit much of the northeast of the U.S. including PA. We may not see too much snow from the storm, but there are other dangers you need to be careful of.
Such low temperatures mean that water can freeze almost instantly. Black ice will be on roadways and sidewalks and even if you are careful it is easy to be injured from slipping in your car or on foot. Remember if you are driving and hit a patch of ice, do not hit your brakes, you want to maintain you current speed so you keep going straight.
If you see ice on sidewalks or in parking lots, do your best to avoid it. Remember the slower you are going the better off you will be.