Stock image Ontario is still under a stay-at-home order, but at least you can crawl out of the storm cellar after Environment Canada confirmed that Tuesday’s tornado warnings were sent out in error. The twister warnings, which covered a large portion of southwestern Ontario, were cancelled by the agency within minutes — but not before reaching thousands of alarmed citizens. According to Environment Canada, it was an unfortunate, and regrettable, mistake. “There was some testing being done on a background system and unbeknownst to the people doing the test, that background system was actually also hooked into an operational server, so when they were sending these test tornado warnings they actually made it out into the circuit,” explained Geoff Coulson, warning preparedness meteorologist with Environment Canada.