Strange Earthquake

We just had a really strange earthquake. I was sitting on the couch at about 10:15 PM watching Morning Call on CNBC when it felt like a car ran into the side of the house. Most earthquakes here (and there are still a lot) feel like a bunch of shaking and bumping. This one was just a big jolt and then it was done. At least I hope it was an earthquake. I'll find out in the morning. Time for bed now.