There have been many improvements in how weather experts predict the path of hurricanes, powerful storms that form in the ocean. However, forecasters still struggle when trying to estimate one quality of a coming storm, its intensity. Intensity measurements would help people prepare for flooding and deadly winds, like those of Hurricane Maria last year. Maria killed an estimated 4,465 people, severely damaged the electrical power system and caused $90 billion in damage in Puerto Rico. Steve Bowen is the director and weather expert for the insurance company Aon Benfield’s Impact Forecasting team. He said it is helpful to know where a hurricane is going, but more information about its intensity is needed. We sort of have half the circle filled in, and we need to get that other half filled in, Bowen told the Reuters news service. Some climate scientists have said that warming sea and air temperatures have added more energy to the storms. And this might affect intensity predictions.