Chief of Staff to the Vice President of the United States. The Chief of Staff to the Vice President of the United States is the Chief of Staff position within the Office of the Vice President, part of the Executive Office of the President of the United States.
Although the diameter of hail is varied, in the United States, the average observation of damaging hail is between 2.5 cm (1 in) and golf ball-sized (1.75 in). Stones larger than 2 cm (0.80 in) are usually considered large enough to cause damage.
A strong updraft allows hailstones to grow large enough to reach the ground. In general, the stronger the updraft, the larger the hail. Once hailstones grow large enough to begin falling despite the updraft that's been holding them up, they hurtle toward the ground as fast as 90 mph. Small hailstones often melt before reaching the ground, but the larger ones reach the ground and can cause extensive damage to crops and vehicles caught in the storm.