A Full Description of the Great Tornado in Chester County, Pa.

An eyewitness account and local investigation that reconstructs a violent tornado by tracing its track, measuring its width and direction, and noting atmospheric readings and visible funnel characteristics. The author combines on-the-ground observations with interviews to describe damage to farms, buildings, and timber, details changes in the storm’s course, and records how debris and destruction concentrated within a narrow, rotating cone. The pamphlet situates the event within broader meteorological ideas by comparing tornadoes to cyclones and hurricanes, discusses probable causes such as barometric and temperature contrasts plus electrical conditions, and offers practical notes on safety and storm behavior.