We don't have thunderstorms very often here, but there is always the threat of an earthquake.
So, we have wind-up flashlights in our cars, in the bedroom, and I think one in the kitchen somewhere, as our kitchen and living room is one large room. (Along with First aid kits and varies survival kits in both the house and the cars.)
Plus, my cell phone is bright and always charged, and DH has the flashlight app on his iPod.
So, yes, I am prepared as you are!