Supercell (image) Penn State Share Print E-Mail Caption A supercell thunderstorm passes near Elm Creek, Nebraska, in July 2014. Penn State meteorologists have been examining the widths of storms' updrafts to predict the likelihood of dangerous hail. Credit NOAA Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.