 On January 21, the Storm Prediction Center (SPC) issued a High risk of severe weather across much of central and eastern Arkansas, southwestern Tennessee, northeastern Louisiana, and much of northern and western Mississippi.The organization warned of the potential for a widespread severe weather outbreak, including several long-tracked and intense tornadoes.The meteorological setup unfolded as a broad upper-level trough, with its axis across the Central United States, rapidly amplified in conjunction with a 175 mph (280 km/h) jet streak across the southern Rockies.