Storm trackers in the Texas Panhandle recovered a massive hail stone that researchers ... It was discovered near Vivian, South Dakota, in July 2010, according to the National Centers for ...

Hail forms and is carried upward through the storm by the updraft and held ... "captured" in the U.S. was that which fell near Vivian, South Dakota in 2010. It measured 8.0 inches in diameter ...