Extreme cold warnings issued for southern Alberta early Thursday

Extremely cold temperatures in southern Alberta. Jodi Hughes has a look at the five-day forecast from the Sky Watch Weather Centre.

More extreme cold warnings were issued across southern Alberta early Thursday morning as the northern edge of a low pressure system in the U.S. Midwest directed Arctic air along the southern borders of Alberta, Saskatchewan and Manitoba.

Those warnings were linked to windchill values near -40 as the region sat under clear skies, but the warning will be lifted throughout the day once a moderating pattern takes over.

Daytime highs across southern Alberta will be notably warmer by Thursday afternoon with values closer to -10 C, but this will be short-lived as another cold spell is expected to begin on Sunday.

Temperatures in Calgary have been well-below seasonal since Saturday night, peaking at -20 C on Wednesday and dropping down to -28 C on Monday.

The normal range for this time of year is -1 C and -13 C.

Snow on Wednesday created poor driving conditions across Calgary and along certain major area-highways including the Trans-Canada Highway.

As of Thursday morning, impacts were still measurable, with both Calgary.ca and some 511 Alberta cameras showing snow-covered surfaces.

Calgary can expect a mix of sun and cloud over the next few days, and with temperatures well-below freezing surfaces like sidewalks, stairways and parking lots may be slippery.