How about a wind chill of 78 below zero?
That happened in the last 24 hours at Nuiqsut, Alaska. These few notes:
+ Low this morning of 53 below zero at Nuiqsut (temperature, not wind chill)
+ Low of 51 below at Deadhorse
+ Wind chill of 76 below at Deadhorse
+ Wind chill of 78 below at Nuiqsut
THE LOWER 48
+ Coldest this morning 26 below at Alamosa, Colo., in a high altitude but deep valley in the South-Central part of the state. (elevation 7546 feet)