 ISU severe weather meteorologist and professor of meteorology William Gallus said extreme heat from a changing climate has increased ocean temperatures and is one contributing factor to this year's storms. Mexico and Texas were having record high temperatures. That was allowing the Gulf of Mexico to rapidly warm up, get much warmer than normal, which means that is our main source of energy. Again, that's ISU severe weather meteorologist and professor of meteorology William Gallus. Ethan Hewitt, KMA News.