The 6.7 <span about="#mwt52" data-mw='{"parts":[{"template":{"target":{"wt":"M","href":"./Template:M"},"params":{"1":{"wt":"w"}},"i":0}}]}' id="mwAQg" typeof="mw:Transclusion">M</span><sub about="#mwt52">w</sub><span about="#mwt52" typeof="mw:Entity"> </span><link about="#mwt52" href="./Category:Articles_using_Mw_magnitude_scale" id="mwAQk" rel="mw:PageProp/Category"/> <a href="https://en.wikipedia.org/wiki/1954_Chlef_earthquake" id="mwAQo" rel="mw:WikiLink" title="1954 Chlef earthquake">Chlef earthquake</a> shakes northern <a href="https://en.wikipedia.org/wiki/Algeria" id="mwAQs" rel="mw:WikiLink" title="Algeria">Algeria</a> with a maximum <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Mercalli_intensity_scale" id="mwAQw" rel="mw:WikiLink" title="Mercalli intensity scale">Mercalli intensity</a> of XI (<i id="mwAQ0">Extreme</i>). At least 1,243 people were killed and 5,000 were injured.