National Weather Service United States Department of Commerce

June 6, 1917
Counties:  Butler (from Muhlenberg)
F-scale:  F2
Deaths: 7
Injuries:   30
Path width:  75 yards
Path length:  17 miles
Time:  5:00pm
Narrative:  Moved east from two miles north of Greenville to near Powderly and to southeast of Rochester.  The tornado moved through a rural area of poorly constructed homes, many owned by miners.  A number of these homes were swept away.  One man was killed in Butler County, running from a house to a barn.  Both were destroyed.