MINNEAPOLIS (WCCO) – The deep freeze Wednesday is prompting flight delays at Minneapolis-St. Paul International Airport.

Airport officials say the extreme cold is causing equipment issues, leading to flight delays.

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Temperatures at the airport dipped to 28 below zero Wednesday morning, the coldest it’s been in the Twin Cities since the mid-90s.

Wind chills values were recorded as low as 53 below.

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Among the cold-related mechanical issues at the airport was the stopping of the Concourse Tram, which can’t operate when temperatures dip lower than 22 below zero.