| Event Category | Disaster |
| Event Group | Natural |
| Event Subgroup | Meteorological - Hydrological |
| Event Type | Tornado |
| Place | Sudbury, Lively, Coppercliff and Field ON |
| Event Start Date | August 20, 1970 |
| Event End Date | August 20, 1970 |
| Comments | Sudbury, Lively, Coppercliff and Field ON, August 20, 1970. An F3 tornado (wind speeds of 252-330 km/h) caused the loss of six lives, 200 injuries, and extensive damage to property. |
| Fatalities | 6 |
| Injured / Infected | 200 |
| Evacuated | 0 |
| Estimated Total Cost | $75,000 |
| Federal DFAA Payments | $75,000 |
| Provincial DFAA Payments | Unknown |
| Provincial Department Payments | Unknown |
| Municipal Costs | Unknown |
| OGD Costs | Unknown |
| Insurance Payments | Unknown |
| NGO Payments | Unknown |
| Utility - People Affected | 0 |
| Magnitude | 0.0 |