I am a light sleeper and tend to wake up for anything out of the ordinary. Early this morning it was several seconds of vibration in the bed.
I immediately thought "the dog needs her flea drops", but I quickly ruled that out as I didn't hear the jangle of the dog tags. Besides, the dog is not allowed on the bed....
How about cats? No cats on or beside the bed.
How about earthquake? Did the New Madrid Fault finally do its thing? By this time the vibration had ended and I decided to go back to sleep.
Upon waking at 6:00am, I did my usual morning things and ended up at my laptop where I checked the news.
It really was an earthquake, 5.4 magnitude, with an epicenter about 130 miles
See "Illinois Earthquake Felt in Boone County" for additional information.
[Update] The US Geological Survey revised the earthquake's magnitude downward to 5.2.
All-in-all an interesting way to start off the day.