EF4Historical Record
EF4 Tornado — Boone County, Illinois — April 21, 1967
Boone County, IL
1200 yd wide25.5 mi longmoved E
Shaded band = damage-path width · animated dot traces direction of travel
Event stats
EF ratingEF4
Date & timeApril 21, 1967 · 3:50 PM
Path length25.5 mi
Max width1200 yd
Injuries450
Fatalities24
Details
A EF4 tornado was recorded in Boone County, IL, tracking roughly 25.5 miles with a maximum width of about 1200 yards. The event is associated with 24 fatalities and 450 injuries in the historical record. Details are drawn from NOAA/SPC and may be incomplete or generalized.
Historical record from public weather datasets.
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