F1 tornado in Cherokee County, Oklahoma

Thunderstorms developed ahead of a dry line late in the afternoon on the 12th. The atmosphere ahead of the dry line was highly unstable and had strong low level wind shear. The combination of the instability and wind shear promoted the development of supercell thunderstorms, which moved east-northeast across northeastern Oklahoma and northwestern Arkansas during the evening. The southernmost supercell produced four tornadoes. The tornadoes were on the ground for a combined 65 miles.The first tornado touched down in northwestern Cherokee County and moved east-northeast producing up to F1 damage in the county as assessed by a survey team. In Cherokee County, several homes received minor damage, outbuildings were destroyed, power lines were downed, and numerous trees were snapped or uprooted.This tornado continued into southern Delaware County about 2 miles south of Leach and eventually produced damage that was rated F3 on the Fujita Scale.