https://web.archive.org/web/20030716043210/http://www.msc.ec.gc.ca/education/teachers_guides/Module1_hazardous_weather_e.html Project Atmosphere - Tracking the Grand Valley Tornado] It stayed over rural areas for most of its 40 kilometers path, however a few homes (especially in the Terra Nova and Mansfield area) sustained F3 damage (it has been somewhat disputed whether this path was of two separate tornadoes, rather than just one).