ADVERTISEMENT
Manila Bulletin devider Philippines devider National devider Mayon Volcano lava flow reaches 'maximum length' of up to 2.5 km  — Phivolcs

Mayon Volcano lava flow reaches 'maximum length' of up to 2.5 km  — Phivolcs

Published Jun 20, 2023 02:24 am
Lava flow from Mayon Volcano’s effusive eruption has reached a “maximum length” of up to 2.5 kilometers from the summit crater, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Tuesday, June 20. Phivolcs said a “very slow effusion of lava from the summit crater of Mayon Volcano continued to feed lava flows and collapse debris” on the Mi-isi and Bonga gullies on the south and southeastern sides of the crater, respectively. It pointed out that the lava flows have advanced to maximum lengths of 2,500 meters and 1,800 meters along the Mi-isi and Bonga gullies, respectively. Meanwhile, it has displaced collapsed debris up to 3,300 meters from the crater. During its 24-hour monitoring of the restive volcano, Phivolcs recorded two dome-collapse pyroclastic density currents (PDC) that lasted two to three minutes, 301 rockfall events, and one volcanic earthquake “Continuous moderate degassing from the summit crater produced steam-laden plumes that rose 800 meters before drifting to the general west,” it added. The effusive eruption of Mayon Volcano produced more than one kilometer-long lava flow, as seen in this photo taken on June 17, 2023. (ALI VICOY/MANILA BULLETIN)

‘High-level’ unrest persists

 Phivolcs said that Mayon’s current state could last for a few months and its alert level 3 status could be maintained. Mayon Volcano has been on alert level 3 since June 8, indicating that a “hazardous eruption is possible within weeks or even days.” It is “currently in a relatively high level of unrest as magma is at the crater,” Phivolcs pointed out. The evacuation of residents within the six-kilometer permanent danger zone has been recommended due to the risk of PDCs, lava flows, rockfalls, and other volcanic hazards. Phivolcs warned the public to be cautious of PDCs, lahars, and sediment-laden stream flows along channels draining the volcano edifice. It pointed out that heavy rainfall could cause channel-confined lahars and sediment-laden stream flows on channels where PDC deposits were emplaced. Likewise, it said that ash fall events may “most likely” occur on the south side of the volcano, based on the current wind pattern. Phivolcs advised civil aviation authorities to ask pilots to avoid flying close to the volcano because ash from sudden eruption may pose hazards to aircraft.

Related Tags

volcanic eruption Mayon Volcano PAGASA Alert Level 3
ADVERTISEMENT
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1561_widget.title }}

{{ item.title }}
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1562_widget.title }}

{{ item.title }}
.most-popular .layout-ratio{ padding-bottom: 79.13%; } @media (min-width: 768px) and (max-width: 1024px) { .widget-title { font-size: 15px !important; } }

{{ articles_filter_1563_widget.title }}

{{ item.title }}

{{ articles_filter_1564_widget.title }}

{{ item.title }}
.mb-article-details { position: relative; } .mb-article-details .article-body-preview, .mb-article-details .article-body-summary{ font-size: 17px; line-height: 30px; font-family: "Libre Caslon Text", serif; color: #000; } .mb-article-details .article-body-preview iframe , .mb-article-details .article-body-summary iframe{ width: 100%; margin: auto; } .read-more-background { background: linear-gradient(180deg, color(display-p3 1.000 1.000 1.000 / 0) 13.75%, color(display-p3 1.000 1.000 1.000 / 0.8) 30.79%, color(display-p3 1.000 1.000 1.000) 72.5%); position: absolute; height: 200px; width: 100%; bottom: 0; display: flex; justify-content: center; align-items: center; padding: 0; } .read-more-background a{ color: #000; } .read-more-btn { padding: 17px 45px; font-family: Inter; font-weight: 700; font-size: 18px; line-height: 16px; text-align: center; vertical-align: middle; border: 1px solid black; background-color: white; } .hidden { display: none; }
function initializeAllSwipers() { // Get all hidden inputs with cms_article_id document.querySelectorAll('[id^="cms_article_id_"]').forEach(function (input) { const cmsArticleId = input.value; const articleSelector = '#article-' + cmsArticleId + ' .body_images'; const swiperElement = document.querySelector(articleSelector); if (swiperElement && !swiperElement.classList.contains('swiper-initialized')) { new Swiper(articleSelector, { loop: true, pagination: false, navigation: { nextEl: '#article-' + cmsArticleId + ' .swiper-button-next', prevEl: '#article-' + cmsArticleId + ' .swiper-button-prev', }, }); } }); } setTimeout(initializeAllSwipers, 3000); const intersectionObserver = new IntersectionObserver( (entries) => { entries.forEach((entry) => { if (entry.isIntersecting) { const newUrl = entry.target.getAttribute("data-url"); if (newUrl) { history.pushState(null, null, newUrl); let article = entry.target; // Extract metadata const author = article.querySelector('.author-section').textContent.replace('By', '').trim(); const section = article.querySelector('.section-info ').textContent.replace(' ', ' '); const title = article.querySelector('.article-title h1').textContent; // Parse URL for Chartbeat path format const parsedUrl = new URL(newUrl, window.location.origin); const cleanUrl = parsedUrl.host + parsedUrl.pathname; // Update Chartbeat configuration if (typeof window._sf_async_config !== 'undefined') { window._sf_async_config.path = cleanUrl; window._sf_async_config.sections = section; window._sf_async_config.authors = author; } // Track virtual page view with Chartbeat if (typeof pSUPERFLY !== 'undefined' && typeof pSUPERFLY.virtualPage === 'function') { try { pSUPERFLY.virtualPage({ path: cleanUrl, title: title, sections: section, authors: author }); } catch (error) { console.error('ping error', error); } } // Optional: Update document title if (title && title !== document.title) { document.title = title; } } } }); }, { threshold: 0.1 } ); function showArticleBody(button) { const article = button.closest("article"); const summary = article.querySelector(".article-body-summary"); const body = article.querySelector(".article-body-preview"); const readMoreSection = article.querySelector(".read-more-background"); // Hide summary and read-more section summary.style.display = "none"; readMoreSection.style.display = "none"; // Show the full article body body.classList.remove("hidden"); } document.addEventListener("DOMContentLoaded", () => { let loadCount = 0; // Track how many times articles are loaded const offset = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // Offset values const currentUrl = window.location.pathname.substring(1); let isLoading = false; // Prevent multiple calls if (!currentUrl) { console.log("Current URL is invalid."); return; } const sentinel = document.getElementById("load-more-sentinel"); if (!sentinel) { console.log("Sentinel element not found."); return; } function isSentinelVisible() { const rect = sentinel.getBoundingClientRect(); return ( rect.top < window.innerHeight && rect.bottom >= 0 ); } function onScroll() { if (isLoading) return; if (isSentinelVisible()) { if (loadCount >= offset.length) { console.log("Maximum load attempts reached."); window.removeEventListener("scroll", onScroll); return; } isLoading = true; const currentOffset = offset[loadCount]; window.loadMoreItems().then(() => { let article = document.querySelector('#widget_1690 > div:nth-last-of-type(2) article'); intersectionObserver.observe(article) loadCount++; }).catch(error => { console.error("Error loading more items:", error); }).finally(() => { isLoading = false; }); } } window.addEventListener("scroll", onScroll); });
Join Our Newsletters

Sign up by email to receive news.

© 2025 Manila Bulletin The Nation's Leading Newspaper. All Rights Reserved.