Could also be a way to describe the “schoolchildren’s blizzard” from the high plains two months previously:
From Nat.Geo
“On January 12, 1888, the so-called “Schoolchildren’s Blizzard” kills 235 people, many of whom were children on their way home from school, across the Northwest Plains region of the United States. The storm came with no warning, and some accounts say that the temperature fell nearly 100 degrees in just 24 hours.”
Veracity of the accounts is something I’m not so sure of, mind you