It’s currently 30F in Rockwall. 24 hours ago it was 69F. We’ve had a cold front moving in since about 3pm.

My wife bought a ticket for us to drive through Christmas lights at the Texas Motor Speedway, on the north side of Fort Worth, some 70 miles almost due west from here. After getting done, around 7ish, my phone reported the local temperature at 24F. As we drove home, I watched the temperature slowly climb. When we pulled into my house, the temperature was 33F. So, for a 70 mile drive, the temperature rose nine degrees, which is a pretty intense gradient for a weather pattern.