August 30, 1800 – “A planned slave revolt led by a blacksmith named Gabriel, who was owned by Thomas Prosser, of Henrico County, is thwarted when a huge storm delays the meeting of the conspirators and a few nervous slaves reveal the plot to their masters.”

– from Encyclopedia Virginia, entry on The Confessions of Nat Turner

source: http://www.encyclopediavirginia.org/_Confessions_of_Nat_Turner_The_1831