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Alert Level 1 raised over Bulusan Volcano: Phivolcs

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<div class="embed-wrap"><figure data-feedback="fb:likes,fb:comments"><img alt="Photo courtesy of Ryan Lagunilla" src="https://sa.kapamilya.com/absnews/abscbnnews/media/2022/news/06/12/20220612-bulusan-volvano-eruption-rl-1-s.jpg"/><figcaption>FILE PHOTO- Bulusan volcano emits a steam-rich plume at least 150 meters tall, drifting west-northwest in this photo taken from Barangay Batang, Irosin, Sorsogon on Sunday. The Philippine Institute of Volcanology and Seismology (Phivolcs) reminds residents to stay vigilant as Alert Level 1 prevails around the Bulusan Volcano due to the increased possibilities of sudden and hazardous phreatic eruptions. <em>Photo courtesy of Ryan Lagunilla</em></figcaption></figure></div><p>MANILA — Phivolcs on Wednesday raised Alert Level 1 over Mount Bulusan in Sorsogon after the volcano entered &quot;a period of low-level unrest.&quot; </p><p>This began after the several volcanic earthquakes that started on Oct. 14, 2023. A total of 121 volcanic earthquakes have been recorded since then. </p><p>Deformation data gathered from electronic tilt and GPS monitoring &quot;indicate inflation or swelling of the southern flank since February 2023 and of the northeastern flank since September 2023,&quot; Phivolcs&#x27; advisory read.</p><p>Aside from these, state seismologists recorded a notable increase of volcanic carbon dioxide (CO2) concentrations from June to August 2023, based on the advisory. </p><p>&quot;These parameters indicate that hydrothermal activity driven by deep-seated magma degassing may be occurring beneath the volcano and may lead to steam-driven eruptions at any of its summit vents,&quot; said Phivolcs. </p><div><strong>No entry into 4-km danger zone</strong></div><p>Phivolcs told local government units that entry to the 4-kilometer radius permanent danger zone is already prohibited, while the public should also be cautious in the 2-kilometer extended danger zone. </p><p>Under the status, Phivolcs said there is increased possibility of &quot;sudden and hazardous phreatic eruptions from the summit crater and/or lateral vents.&quot;</p><p>&quot;People living within the valleys and along rivers/stream channels especially on the southeast, southwest, and northwest sectors of the edifice should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall should a phreatic eruption occur,&quot; it said. </p><p>The Phivolcs uses a 5-level alert system for volcanoes. </p><p>Bulusan was last placed under Alert Level 1 in October last year. This was lowered to <a href="https://news.abs-cbn.com/news/01/18/23/bulkang-bulusan-balik-normal-na">Alert 0</a> in January this year. </p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/news/01/18/23/bulkang-bulusan-balik-normal-na">Bulkang Bulusan balik Alert Level 0 &#x27;normal&#x27; na</a></li></ul><figure class="op-interactive"><iframe height="315" src="https://www.youtube.com/embed/bInmHjUbrJo?enablejsapi=1" width="560"></iframe></figure><div class="iwantbar">Watch more News on <a href="https://www.iwanttfc.com/#!/browse/Genres/News/tag_id_genres/id_news" target="_blank">iWantTFC</a></div>

Phivolcs on Wednesday raised Mt. Bulusan's alert level to 1 after entering 'a period of low-level unrest.' 