A 5/8/18 story in Wired talks about using microphones to detect and predict tornados from the infrasound they produce even before the funnel forms. Full story at: https://www.wired.com/story/a-tornados-secret-sounds/ . Here is a clip: "... tornadoes also seem to emit low-frequency sound waves called infrasound that the human ear can’t hear. What’s more, storms may emit characteristic infrasounds perhaps an hour before they develop into tornadoes. ... Today at the Meeting of the Acoustical Society of America, engineer Brian Elbing of Oklahoma State University is showing how he and his team were able to use microphones to detect the signal of a tornado 10 minutes before the twister formed 12 miles away. Not only that, afterwards they were able to estimate the tornado was 150 feet in diameter, and indeed the official report of the destruction path confirmed that." This is not the first time infrasound has been discussed on Stormtrack. There was a thread in 2012 https://stormtrack.org/community/threads/kind-of-an-odd-musing.26024/ and 2014 https://stormtrack.org/community/th...winged-warbler-flying-away-from-storms.27803/.