Severe thunderstorms possible in and around Calgary Thursday

More moderate temperatures are expected for portions of central and southern Alberta on Thursday, while the southeast corner of the province is expecting one more day of unusually warm temperatures.

A heat warning was issued for most of east-central and southeastern Alberta on Wednesday, including Calgary, Red Deer and Edmonton.

Those warnings have been lifted for the QEII corridor Thursday due to cooler temperatures expected, but continued for southeastern Alberta with daytime highs expected to reach the low 30s.

As expected, thunderstorms developed in central and southern Alberta on Wednesday with some cells rapidly intensifying into supercells.

Local storm chasers reported a tornado touched down near Drayton Valley on Wednesday around 5:30 p.m., but this has not been confirmed yet by Environment and Climate Change Canada.

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There is a risk of severe thunderstorm activity across central and southern Alberta again on Thursday, with the moderate risk zone extending into Calgary.

If these storms do develop, the greatest threats include strong wind and large-sized hail.

Other potential risks include pockets of heavy rain, and possible rotation – especially in communities east of the QEII Highway.

More seasonal temperatures are expected over the next few days – with daytime highs ranging from 20 C to 23 C from Thursday until Sunday.

The forecast for the Calgary Stampede parade should be pleasant, with a mix of sun and cloud and morning temperatures around 11 to 17 C.

More showers and thunderstorms are possible across southern Alberta on Saturday and Sunday, with heavier rainfall likely along the southern border.