Tweet: Chicago's (at O'Hare) 52 consecutive hours below zero January 29-31, 2019

#Chicago's (at O'Hare) 52 consecutive hours below zero from about 6pm on 1/29 to about 10pm last night (1/31) is the 4th longest such streak since 1929-30. This is an unofficial ranking list since the data does not extend back to entire period of record (to 1871). #ilwx pic.twitter.com/gxvxovbm51

— NWS Chicago (@NWSChicago) February 1, 2019