Timeline Worksheet: October 17, 1091, London Tornado! Today, we remember October 17, 1091, the date when a massive tornado struck the heart of London. I’ve created a research prompt worksheet to help you learn more about tornadoes. Timeline Worksheet: October 17, 1091 Fits English history timeline.* *If you are new to this series, visit my introduction to timelines. Return to the Timeline. Join our community of 16,000+ for history, language arts, writing, math, science, and more, plus special resources about Asia, missions, and the persecuted Church.