萨菲尔-辛普森飓风等级
Piltz and his team of meteorologists developed Sperry's "ice accumulation algorithm" that incorporates various radial ice accumulation measurements, wind speed and direction data and temperature forecasts for a storm event period, and assimilated that data into a "Potential Utility Damage Scale," much like the enhanced Fujita scale or the Saffir–Simpson hurricane wind scale.