Environment Canada has ended all severe thunderstorm warnings for Windsor-Essex, Chatham-Kent, London-Middlesex and Sarnia-Lambton.
Meteorologists were previously tracking a thunderstorm capable of producing wind gusts, quarter to toonie size hail and torrential rain.
A Petrolia resident holds a handful of hail, August 14, 2015. (Photo courtesy of Paul via the Blackburn Radio App)