Title Yes, those were tornado-alert sirens blaring in London. Here’s what to know Thu, 2025-07-03 11:46 The London Free Press Here's what to know about the Forest City's extreme-weather alert sirens. London Free Press, building, Canada, city, Environment, Environment Canada, Explainer, Local News, London, News, Northern Tornadoes Project, Police, social, Staff, Students, Tornadoes, Weather, Western, Western University