At 8:10 p.m. PDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, up to nickel size hail and heavy rain.The thunderstorm over Castlegar is nearly stationary.###Weather in the mountains can change suddenly resulting in hazardous driving conditions.Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.Road conditions are available at https://www.drivebc.ca/.