I was sitting on patio and saw a bright flash of what I perceived as lightening out of the East to SE sky. Only happened once as I waited for another flash and listened for thunder. As bright as the "lightening" was I new a storm had to be close but never heard or saw anything else. Went in house to look on WHIO TV weather radar only to find no storms near. Didn't have a clue what I saw cause I thought a flash that would light up the sky that bright could be nothing else but lightening.
