Good evening. Pennsylvania. I'm Aaron Jolly. Folks, that arctic front that blew through overnight? It left the door wide open for Canadian air to come pouring in. Right now you're sitting at 45 degrees under crystal clear skies. Feels decent. but that's the last of yesterday's warmth bleeding out. A massive high pressure dome is sliding in from the Upper Midwest. and it's dragging cold air south like a freight train. In the next 24 hours. Down in Southeast PA. Philly and the surrounding counties, you might catch a few rain and snow showers before 10 A.M. Nothing sticks. Just enough to make your windshield annoying. High tops out around 41 degrees. Then tonight, the bottom drops out. Skies clear and temps plunge to 20. That's a 20 degrees freefall in a few hours. Over in Pittsburgh, you skip the morning drama entirely. Pure sunshine, high near 40  ...