On April 5, 2023, the 2023 Canadian ice storm devastated Quebec and Ontario, knocked out electricity for more than a million people, resulted in fatalities, and severely damaged property and infrastructure.

[3] The warm front moved northeastward, affecting Quebec City, the southern Maritimes and New England, while precipitation became snow with a small amount of freezing rain during its progression.

[4][6] The Montreal Regional Public Health Department (DRSP) recorded 127 cases of poisoning by this gas while many were trying to warm up or cook indoors with an appliance designed for outdoor use.

[9] The weather warnings were cancelled after the event and the situation was under control, according to the authorities, but they nevertheless recommended care because it would take many weeks to repair the damage brought on by the ice storm.

[12] François Legault, the premier of Quebec, emphasized the dangers of extreme weather conditions and the rising probability that they may occur as a result of climate change.