(WBNG Binghamton) It formed in less than 45 minutes and was on the ground for at least 45 more.
As of late Monday, officials had reported at least 51 people are dead and many more injured, and those numbers are only expected to climb.
Among the dead are as many as two dozen children, who were holed up in one elementary school in Moore, Okla., before parts of the town were flattened.
Less than one mile away from this school, Johnson City native and SUNY Oneonta graduate Jason Anderson has been keeping track of the devastation from his home.
Action News spoke with him Monday evening. Here's the video.