Environment Canada ended its tornado warnings for Wetaskiwin County near Pigeon Lake, and Leduc County near Calmar, Devon, Warburg and Thorsby just before 6:30 p.m. Thursday.
However, severe thunderstorm warnings are now in place for Edmonton, Sherwood Park and St. Albert.
An earlier warning for Brazeau County near Drayton Valley and Breton was ended around 6 p.m.
This video was taken about eight kilometers northwest of Breton:
The Drayton Valley storm’s rotation appeared to slow down around 6 p.m., according to Nevin deMilliano with Prairie Storm Chasers.
He watched the storm unfold just east of Drayton Valley.
“This is the biggest storm that I’ve ever seen in Alberta,” said diMilliano, who has a decade of experience chasing severe weather in the province.
“It’s the most unreal thing that I’ve ever seen … you can’t even describe it, it’s that crazy.”
Rotation has weakened but you do not want to be in there @PrairieChasers 4:45pm pic.twitter.com/wxr99pyD98
Pictures and videos posted to diMilliano’s Twitter account show a churning mass of dark clouds.
“It’s huge,” he said. “It’s like it’s alive.”
Hail the size of golf balls fell inside the town of Drayton Valley. (Leslie Frasier )