National Weather Service United States Department of Commerce


County Road 42 EF-1 Tornado (Blount County)
  April 12, 2020


Event Summary

Estimated Maximum Wind:
90 mph
Damage Path Length:
0.78 miles
Maximum Path Width:
115 yards
Approximate Start Point/Time:
4 ESE Hendrix
at 604 pm
Approximate End Point/Time:
4 W Altoona
at 605 pm


National Weather Service meteorologists surveyed the damage near Sand Valley in Blount County and determined it was the result of an EF-1 tornado.

An additional brief tornado touched down near the 3600 Block of County Rd 42 in northeastern Blount County. Numerous trees were snapped and uprooted before the tornado impacted a farm property where structural damage occurred to at least three farm buildings, as well as a large silo. The tornado then tracked northeastward across an open pasture where additional trees were snapped and uprooted before dissipating in a nearby wooded area. The tornado was estimated to be on the ground for no more than a minute with a path length of 0.78 miles, at 115 yards wide. Maximum estimated winds were 90 mph. The National Weather Service would like to thank Blount County EMA for their assistance with the several damage assessments across the county.


Radar Image
Reflectivity (left) and velocity (right) of the circulation as the tornado touched down.
Images are from KBMX at 604 pm.


Damage Photo
  Farm Damage
Damage Photo
  Farm Damage