CINCINNATI -- It's about to get a lot colder in the Tri-State -- but how do these low temperatures stack up against the region's past?
This recent arctic blast began creeping into the northern U.S. on Monday, bringing a wave of frigid air. Wednesday in Cincinnati should hit 0 degrees, without wind chill taken into account. Thursday is expected to drop as low as 8 degrees -- and Friday will be the most frigid at -1 degrees.
So far in 2014, the Tri-State has faced two days where temperatures plunged below zero.
But that's nothing compared to 1977, where the region had 25 days in the negatives.
In early January 1977, the entire Ohio Valley region was so enveloped in cold, the Ohio River froze from Pittsburgh to Louisville. The National Weather Service recorded 18 January mornings out of a 30-day period with low temperatures below zero in Cincinnati. The average temperature in January was just 11.4 degrees.
And the coldest point of the snap was a whopping 25 degrees below zero.
Both 1917 and 1963 share second place for 13 days recorded below zero. In 1978 there were 12 days in the negative temperatures, and in 1979 there were 11.
You can see how other years in Cincinnati's history stack up here: