The 7.4 <span about="#mwt31" data-mw='{"parts":[{"template":{"target":{"wt":"M","href":"./Template:M"},"params":{"1":{"wt":"w"}},"i":0}}]}' id="mwyA" typeof="mw:Transclusion">M</span><sub about="#mwt31">w</sub><span about="#mwt31" typeof="mw:Entity"> </span><link about="#mwt31" href="./Category:Articles_using_Mw_magnitude_scale" id="mwyQ" rel="mw:PageProp/Category"/> <a href="https://en.wikipedia.org/wiki/1978_Tabas_earthquake" id="mwyg" rel="mw:WikiLink" title="1978 Tabas earthquake">Tabas earthquake</a> affects the city of <a href="https://en.wikipedia.org/wiki/Tabas" id="mwyw" rel="mw:WikiLink" title="Tabas">Tabas</a>, Iran with a maximum <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Mercalli_intensity_scale" id="mwzA" rel="mw:WikiLink" title="Mercalli intensity scale">Mercalli intensity</a> of IX (<i id="mwzQ">Violent</i>). At least 15,000 people are killed.