All of southern Alberta has been put under a special weather alert by Environment Canada, as a low-pressure system brings showers and possibly even snow. 

According to EMS, the teens were in a tent on the campground when they were pinned under a tree downed by the storm.

Vehicles were spotted under several Calgary overpasses Thursday during a hailstorm in Calgary.

The Insurance Bureau of Canada says the hail, rain and wind that hit Calgary, Airdrie and Rocky View County on June 13 were part of the costliest hailstorm and the fourth most expensive insured natural disaster in Canadian history.

About 300 adjusters have come in from outside Alberta, including about 100 from the United States, for a mix of desk and field work.

It appears disaster support is on the way for Calgary-area residents affected by a severe storm that caused extensive property damage earlier this month.

The "strong" storm was northwest of Calgary at about 6:25 p.m. and was moving southeast at about 30 kilometres per hour.

For the second time this month, severe weather brought flooding and destruction to the city's streets and neighbourhoods.

Environment Canada said its meteorologists are tracking a cluster of severe thunderstorms, "capable of producing strong wind gusts, up to toonie-size hail and heavy rain."

Some Calgary drivers looking to rent a vehicle following a violent storm are out of luck.