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Phivolcs detects ‘slightly increased’ seismic activity at Kanlaon

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<h3>Residents warned not to enter 4-km permanent danger zone</h3><p>Mount Kanlaon on Negros island showed a &quot;slightly increased&quot; seismic activity, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Saturday.</p><p>Volcanic gas flux was also present, the agency added. </p><p>The Phivolcs warned nearby residents to refrain from entering the 4-kilometer permanent danger zone, as &quot;sudden and hazardous phreatic eruptions may occur without warning.&quot;</p><p>&quot;Kanlaon Volcano&#x27;s monitoring network recorded 28 volcanic earthquakes between 11 and 13 February 2021,&quot; the institute said in its <a href="https://www.phivolcs.dost.gov.ph/index.php/volcano-advisory-menu/11282-kanlaon-volcano-advisory-13-february-2021-09-00-p-m">9 p.m. advisory</a>.</p><p>The tremors ranged from &quot;ML0.7 to ML2.2 and occurred at shallow depths to depths of 10 kilometers across the northern to eastern portions of the edifice.&quot;</p><p>The Phivolcs also noted sulfur dioxide gas coming out of the summit crater on Saturday.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/news/01/16/20/kanlaon-volcano-remains-normal-says-expert-amid-rumors-of-seismic-activity">Kanlaon Volcano remains normal, says expert amid rumors of seismic activity</a></li></ul><p>&quot;(It) reached an average of 1,130 tonnes/day, the highest value recorded this year, following a trend since June 2020 of emissions higher than background levels of 300 tonnes/day,&quot; the institute said.</p><p>&quot;These parameters could indicate hydrothermal, tectonic or even deep-seated magmatic processes occurring beneath the edifice.&quot;</p><p>Pilots were also warned from flying close to the volcano’s summit, as any sudden phreatic eruption can be hazardous to aircraft. </p><div><strong>FROM THE ARCHIVES</strong></div><figure class="op-interactive"><iframe height="315" src="https://www.youtube.com/embed/L-KKYs9EBmo?enablejsapi=1" width="560"></iframe></figure><div class="iwantbar">Watch more in <a href="//www.iwantv.com.ph/">iWantv</a> or <a href="//tfc.tv/">TFC.tv</a></div>

<p>The Phivolcs warned residents to refrain from entering the 4-kilometer permanent danger zone, as "sudden and hazardous phreatic eruptions may occur without warning."</p>

The Phivolcs warned residents to refrain from entering the 4-kilometer permanent danger zone, as "sudden and hazardous phreatic eruptions may occur without warning."