The town of Big Flats was created on November 15, 1861, and the name was changed from Brownsville. The community of Big Flats once had a
post office, which opened in August 1862; John W. Potter was the first postmaster. The community most likely takes its name from
Big Flats, New York.
Big Flats tornado On August 27, 1994, the town of Big Flats was hit by an
F3 tornado. It touched down at 8:41
P.M. CDT and was on the ground for 16 minutes. The tornado's path was long and wide. The tornado killed two people and injured 22. It destroyed 24 homes, caused major damage to 8, and light to moderate damage to 160. It destroyed the Big Flats Fire Department, the Town Hall, and a thrift store. Seventy cows were crushed when a barn roof and an upper floor containing 16,000 bales of hay collapsed. The tornado caused $1 million in damage. It started when a man lit a fire within a
fire ring constructed of concrete blocks, attempting to burn off dead grass. The fire jumped out of the ring and began burning the grass in the surrounding area. Smoke from the fire was spotted by the fire tower in
Rome's Dyracuse Park. The fire spread in a north-northeast direction, Smoke from the fire was visible from away. By the time it was contained 11 hours later, the flames had spread northward about . It burned approximately , destroying 30 residences. Approximately 60 other out-buildings were also destroyed. Thomas Barnhart was charged with setting a fire which became a forest fire, a
misdemeanor. On November 13, 2006, the total amount of restitution owed was set at $1,436,504. ==Geography==