993 

NOUS43 KDVN 230955

PNSDVN

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-

009-015>018-024>026-034-035-MOZ009-010-232200-



Public Information Statement

National Weather Service Quad Cities IA/IL

455 AM CDT Sun Aug 23 2026





...NWS Damage Survey for 08/21/2026 Tornado Event...



.Overview...A dusty, highly visible tornado formed south of Depue

Illinois Friday evening, but caused very little damage. 



...Northern Putnam County Tornado...



Rating:                 EF0

Estimated Peak Wind:    70 mph

Path Length /statute/:  1.48 miles

Path Width /maximum/:   75 yards

Fatalities:             0

Injuries:               0



Start Date:             08/21/2026

Start Time:             07:13 PM CDT

Start Location:         1 S Depue / Putnam County / IL

Start Lat/Lon:          41.3082 / -89.2986



End Date:               08/21/2026

End Time:               07:20 PM CDT

End Location:           3 WNW Mark / Putnam County / IL

End Lat/Lon:            41.2879 / -89.2892



Survey Summary:

An EF0 tornado, with peak winds of 70 MPH, developed along the

southern banks of the Illinois River and moved towards the south-

southeast. The tornado crossed through a rock quarry, where it

tipped over a portion of an industrial conveyor system. Despite

being on the ground for only 1.5 miles, trained spotter photos

and video suggested it was on the ground for seven minutes.



&&



EF Scale: The Enhanced Fujita Scale classifies tornadoes into the

following categories:



EF0.....65 to 85 mph

EF1.....86 to 110 mph

EF2.....111 to 135 mph

EF3.....136 to 165 mph

EF4.....166 to 200 mph

EF5.....>200 mph



NOTE:

The information in this statement is preliminary and subject to

change pending final review of the event and publication in

NWS Storm Data.





$$





ERVIN