Natural Resources Canada
www.nrcan.gc.ca
Common menu bar links
| Mag | Effects on Humans in close proximity to the epicentre | Effects on Buildings | Effects on the Environment | Examples in Eastern Canada |
| less than 2.5 | None Registered only by seismographs |
None | None | Several hundred a year |
| 2,5 | A low rumble can be heard by people at rest |
None | None | Several dozen a year |
| 3.0 | Low rumble heard | None | None | Several dozen a year |
| 4.0 | Minor vibrations felt | None | None | 3 or 4 a year |
| 5.0 | Vibrations felt | Movement of light objects | None |
Côte-Nord (1999; M 5,0) Cap-Rouge (1997; M 5,1) Mont-Laurier (1990; M 5,0) Charlevoix (1979; M 5,0) Miramichi, N.B. (1982; M 5,7) |
| 6.0 | Vibrations strongly felt, injuries caused by the movement of objects | Movement of objects Fallen chimneys |
Possibility of landslides, rockfalls |
Saguenay (1988; M 6,2) Cornwall (1944; M 5,6) Témiscaming (1935; M 6,2) Charlevoix (1925; M 6,2) |
| 7.0 and higher | Widespread fear, casualties | Partial destruction of old buildings Modern buildings affected |
Landslides Widespread damage Possibility of a tsunami if the epicentre is offshore |
Nahanni (1985; M 6,6 et 6,9) Grands Bancs de Terre-Neuve (1929; M 7,2) Charlevoix (1663; M ~ 7) |
