An eagle riding the updrafts along the valley slid by nearly sideways overhead but I didn’t see it soon enough to grab a picture.

Source: https://calgarysun.com/news/provincial/on-the-road-with-mike-drew-head-in-the-clouds

"Hail is also likely to form in these strong thunderclouds in association with some forceful updrafts, particularly on Sunday when some photos of unusually large hail could be posted across social media."

Source: https://www.dailystar.co.uk/news/latest-news/breaking-uk-heatwave-sees-hottest-30201769

They mainly occur in desert and semi-arid areas, where the ground is dry and high surface temperatures produce strong updrafts.

Source: https://www.liverpoolecho.co.uk/news/liverpool-news/moment-mini-tornado-dust-devil-27140569