The 8.4 inches of snow that fell in Great Falls on the 18th was the highest snowfall day for a single day, for any day in October on record. The previous record single day snowfall high was 6.6 inches set on October 13, 1975. #mtwx pic.twitter.com/qKYl2Og9QH

— NWS Great Falls (@NWSGreatFalls) October 19, 2020