A rotating severe storm, known as a supercell, produced the tornado, according to the NWS. The tornado, which was about 100 yards wide, registered winds of 110 mph and was on the ground for 9.9 miles, said meteorologist Andy Ervin of the Quad Cities National Weather Service.
Sirens sounded in Putnam County communities, and a warning also was issued for McNabb, Mark and Granville during the storm. The tornado was on the ground from 4:40 to about 4:52 p.m., according to the NWS.
The tornado caused a semitrailer to roll over on Route 18, damaged a few out buildings and caused some branches to fall on the highway, the Putnam County Emergency Management Agency said Friday.
No homes were reported damaged.
A tornado in February is rare. Thursday’s is the second in the Quad Cities forecast area since 1950. The other tornado occurred Feb. 28, 2017.
There only have been two tornadoes recorded earlier in the calendar year – Jan. 24, 1967, and Jan. 16, 2023.
The Putnam County Sheriff’s Office, Magnolia Fire Department, Putnam County Emergency Medical Services, Putnam County EMA and Illinois Department of Transportation responded to the incident.
Traffic on a stretch of Route 18 was limited to one lane as debris was cleaned up.
The NWS in the Quad Cities conducted the survey Friday.