This week on the Interrobang podcast, host Hannah Theodore chats with the Executive Director of the Northern Tornadoes Project (NTP) David Sills, as they relive the derecho storm that touched down in London on May 21. Sills, along with his team at NTP, determined that two tornadoes also touched down that day, one not far from Fanshawe College. What led to this brief but wild bout of weather? And what can it tell us about the future?