All thunderstorms produce lightening.
If you can hear thunder, you are close enough to the storms to be struck. Take protective actions. These lightning strikes come out of the upper portions of the thunderstorm cloud which extends 50 to 10 miles into the atmosphere. In general, lightning will travel to the easiest route from the cloud to ground which means that it often strikes the highest object. Therefore, a simple rule is do not make yourself the tallest object or stand near the tallest object in your immediate surrounding.