EF-4 Tornado Damage near Alpena, SD

A violent, damaging, tornado developed early Wednesday evening (June 18, 2014) southeast of Lane, SD and traveled north.  The tornado was on the ground for over 40 minutes and affected two family farms along its route with one family at home during the tornado.  The family heard the tornado warning and moved to their basement as the tornado approached.  The tornado increased in strength and reach its maximum intensity, producing 170 mph winds, near their location.  While in their shelter, debris fell upon them resulting in a minor injury and the death of a family pet.  Both the husband and his wife, as well as other family members, credit the early warning for their safety.  The tornado warning was issued 45 minutes before the tornado impacted their residence.

Rating: EF-4 

Peak wind: 170 mph

Path length: 11.65 miles

Path Width:  Half mile

Fatalities: None

Injuries: One

 

 

The Enhanced Fujita scale classifies tornadoes into the following categories.

Ef0...Weak......65 to 85 mph

Ef1...Weak......86 to 110 mph

Ef2...Strong....111 to 135 mph

Ef3...Strong....136 to 165 mph

Ef4...Violent...166 to 200 mph

Ef5...Violent...>200 mph



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