Environment Canada issued a weather advisory for Lloydminster, Sask. around 1:30 p.m. Sunday afternoon to warn people “conditions will be favourable for the development of funnel clouds today.”
According to the agency, funnel clouds are caused by weak rotation under quickly growing clouds or weak thunderstorms. Environment Canada said while the weak rotation is not usually a hazard near the ground, there is the possibility of the rotation intensifying and turning into a weak landspout tornado.
Although landspout tornadoes don’t normally cause serious damage, Environment Canada says they can still be dangerous and if strong enough, are able to knock over trees, cause damage to roofs and toss debris.