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.
Prior studies have shown that approximately over 75 percent of large size hail is spherical or nearly spherical in shape 18. Reported hail densities range between 0.7 and 0.91 gm/cm 3, the latter value being the density of pure ice. The densities of the ice spheres used in this research were approximately 0.91 gm/cm 3.