April 3 and 4 are two days that stand out in weather history.
40 years ago, an outbreak of tornadoes covered over two thousand miles of terrain in 13 states, including the Bluegrass.
It happened over an 18-hour period in 1974, impacting communities from Canada to the Deep South.
According the National Oceanic and Atmospheric Administration, several of the tornadoes of the "Super Outbreak" were among the most severe ever recorded.
At one point in the storm, at least 15 tornadoes were on the ground at the same time.
The “Super Outbreaks” killed 330 people, injured more than 6,000 and caused more than $1 billion in damage. Locally, seven people were killed and 28 were injured.
The way meteorologists covered tornadoes was also changed forever.
The solemn anniversary has organizers taking a look back and making plans should another outbreak happen again.
To remember the 1974 tornadoes, two documentaries will be shown Thursday night in Frankfort.
Ellen Bryan will bring your more information coming up in ABC 36's 5, 6, and 11pm broadcasts.