What is the difference between a thunderstorm watch and thunderstorm warning?

WATCH – A severe thunderstorm watch means that the potential exists for the development of thunderstorms which may produce large hail or damaging winds. When a watch is issued, you should go about your normal activities, but be alert for further updates and possible warnings.

WARNING – Issued when either a severe thunderstorm is indicated by radar or a spotter reports a thunderstorm producing hail one inch or larger in diameter and/or winds equal to or exceeding 58 miles an hour. GEMA recommends issuing a warning when winds exceed 80 mph.