EF0 tornado in Christian County, Illinois

This tornado touched down in the National Weather Service St. Louis County Warning Area (CWA) just south of the Montgomery/Christian County line near the intersection of East 000 Road and North 400 Road at 4:48 PM CST. It quickly crossed into Christian County, damaging an outbuilding by knocking out a wall and pushing it off it's foundation. It then proceeded to the northeast, doing roof and wall damage to more outbuildings, as well as some tree damage, before dissipating in an open field about 2.9 miles south-southeast of Morrisonville at 4:54 PM CST.

An historic tornado outbreak occurred across Illinois on December 1st, with a total of 29 tornadoes touching down across the central part of the state. This made it the largest December tornado outbreak in the state of Illinois since 1957, and the third largest tornado outbreak across Illinois in any month since 1950. Within the National Weather Service Lincoln County Warning Area (CWA), 20 tornadoes touched down...with the most significant being an EF-3 tornado that tore through the city of Taylorville in Christian County. Despite several communities being directly impacted and experiencing major damage, there were no fatalities reported. The severe weather was caused by a deep area of low pressure that tracked from eastern Kansas into north-central Illinois. Warm air surging northward ahead of the low allowed temperatures to soar into the upper 50s and lower 60s, resulting in a narrow corridor of Convective Available Potential Energy (CAPE) values of 500-1000J/kg ahead of an approaching occluded front. Thanks to ample low-level wind shear, numerous supercell thunderstorms developed within the instability axis by mid to late afternoon. Many of the storms produced tornadoes over the next several hours before the storms gradually weakened by mid-evening.