EF0 tornado in St. Clair County, Illinois

A brief tornado touched down at 6:59 PM CDT on Walnut Lane and tracked to the east northeast along Signal Hill Boulevard. It caused damage to numerous trees and minor structural damage. Overall, the tornado was rated EF0 with max wind speed of 84 mph. The path length was 0.58 miles and a max path width of 100 yards. No deaths or injuries were reported.

Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair, and Washington counties in Illinois. In total, 12 tornadoes have been identified, including 3 EF-1s, 6 EF-0s, and 3 tornadoes of unknown intensity that produced no damage.