Large HailSevere thunderstorms sometimes produce large hail. Such hail has been known to damage vehicles, crops and roofs. Hail is measured on a scale ranging from 1/4-inch (pea sized) to 4 1/2-inches (Grapefruit size). The National Weather Service considers a thunderstorm "severe" if it produces hail that is at least the size of a quarter, or 1 inch in diameter. There is really no way to look at a thunderstorm from a distance and tell if it will produce hail reaching the ground.
THV11 TIP - Knowing storms are coming, try to move cars under carports or into garages for shelter when hail threatens, always play it safe. Wait until the thunderstorm has moved away before going outside.