000 SXUS75 KCYS 150737 RERCDR RECORD EVENT REPORT NATIONAL WEATHER SERVICE CHEYENNE WY 1232 AM MST MON FEB 15 2021 ...RECORD LOW TEMPERATURE SET AT CHADRON NEBRASKA AIRPORT... A RECORD LOW TEMPERATURE OF -21 WAS SET AT CHADRON NEBRASKA AIRPORT YESTERDAY. THIS TIES THE OLD RECORD OF -21 SET IN 1936. $$ MB