The magnitude 7.1 <a href="https://en.wikipedia.org/wiki/1999_Hector_Mine_earthquake" id="mwATQ" rel="mw:WikiLink" title="1999 Hector Mine earthquake">Hector Mine earthquake</a> strikes Southern California<sup about="#mwt108" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-20"}}' id="cite_ref-20" rel="dc:references" typeof="mw:Extension/ref"><a href="./October_16#cite_note-20" id="mwATU" style="counter-reset: mw-Ref 20;"><span class="mw-reflink-text" id="mwATY">[20]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-20"><cite about="#mwt105" class="citation web cs1" id="mwCEM"><a class="external text" href="https://earthquake.usgs.gov/earthquakes/eventpage/ci9108652/origin/detail" id="mwCEQ" rel="mw:ExtLink nofollow">"M 7.1 - The 1999 Hector Mine, California Earthquake"</a>. <i id="mwCEU">earthquake.usgs.gov</i><span class="reference-accessdate" id="mwCEY">. Retrieved <span class="nowrap" id="mwCEc">2024-05-12</span></span>.</cite><span about="#mwt105" class="Z3988" id="mwCEg" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=earthquake.usgs.gov&amp;rft.atitle=M+7.1+-+The+1999+Hector+Mine%2C+California+Earthquake&amp;rft_id=https%3A%2F%2Fearthquake.usgs.gov%2Fearthquakes%2Feventpage%2Fci9108652%2Forigin%2Fdetail&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AOctober+16"></span></span>