We finally saw that it had blown off of the light switch by the back door. Must have been a powerful surge!
Later that day, we discovered that the phone and cable line had taken a hit as well. Our modem had to be replaced (covered by Comcast), as well as our two land line phones and our router. We decided that those items were relatively inexpensive and not worth filing an insurance claim. Several days later, however, we discovered that the washer timer was no longer working (fortunately the washer itself still works, but you have to manually move it to each cycle). Then we discovered that the motion detector light on the end of the carport was out as well. Upon closer inspection, we saw that it had been blackened, too. Hopefully we'll stop finding broken things soon!