In addition to winds greater than 58 mph, a severe thunderstorm must have:

a.) hail less than one inch in diameter

b.) hail greater than one inch in diameter

c.) Lightning

The correct answer is b.) hail greater than one inch in diameter.

All thunderstorms have lightning, but in order for a thunderstorm to be considered severe, it must have winds in excess of 58 mph and hail greater than an inch in diameter.

This weekend's forecast brings us a chance of stronger storms, but the forecast models that we use to bring you the most accurate forecast differ in timing and intensity.

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