www.ontarioweather.com

Wikipedia: List of Canadian tornadoes and tornado outbreaks (before 2001)

Anchor text: Ontario Weather Page

Wikipedia: Wikipedia:Reference desk/Archives/Miscellaneous/2010 September 16

Anchor text: The Ontario Weather Page – 2001 Tornado Database

Wikipedia: List of Canadian tornadoes and tornado outbreaks (since 2001)

Anchor text: 2001 Tornado Database

Wikipedia: List of tornadoes by province (Canada)