Record-low temperatures were recorded in 43 communitiesacross Alberta and B.C. between Sunday and Monday. The coldest community was Grande Prairie, Alta., which saw temperatures plummet to -44.4 C, beating the record set in 1984. That's -56 C with the wind chill. "This area of really cold air originated from Siberia last week. It came across Alaska and is now really settled in all over the West," said weather expert Chris St. Clair in an interview with CTV News Channel.