|Less than 3.5||Recorded on local seismograph, but generally not felt.|
|3.5 – 5.4||Often felt, but rarely cause damage.|
|Under 6.0||At most slight damage to well-designed buildings. Can cause major damage to poorly constructed buildings over small regions.|
|6.1 – 6.9||Can cause damage to poorly constructed buildings and other structures in areas up to about 100 kilometres across where people live.|
|7.0 – 7.9|
“Major” earthquake. Can cause serious damage over larger areas.
|8.0 – 8.9||“Great” earthquake. Can cause serious damage and loss of life in areas several hundred kilometres across.|
|9||Rare great earthquake. Can cause major damage over a large region over 1,000 km across.|
|Source: Natural Resources Canada|
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