Qualla: 1955 Lanao Earthquake https://qualla.com/1955-lanao-earthquake en-us © 2026 Bendyline Mon, 20 Jul 2026 10:21:37 GMT Qualla serial false Qualla support@bendyline.com yes https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/hero-small.webp Qualla: 1955 Lanao Earthquake https://qualla.com/1955-lanao-earthquake 1955 Lanao Earthquake: Introduction https://qualla.com/1955-lanao-earthquake/ Photo credit Mikenorton, CC BY-SA 3.0. At 2:17 in the morning on April 1, 1955, the ground beneath Lanao del Sur began to move. There was no warning anyone could act on -- only a series of foreshocks, the largest a magnitude 6.3 tremor six hours earlier, that had already set nerves on edge across western Mindanao. When the mainshock arrived, it registered 7.4 on the moment magnitude scale, making it one of the most powerful earthquakes ever recorded in the Philippine archipelago. In the darkness, mosques crumbled. Houses collapsed onto sleeping families. Along the southwestern shore of Lake Lanao, the ground itself shifted several meters southward, sending water surging over towns that would remain submerged for years to come.

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Image: Mikenorton | CC BY-SA 3.0

]]> Thu, 09 Apr 2026 00:00:00 GMT https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/w9re-1955-lanao-earthquake-intro.mp3 0:06 1 full 1955 Lanao Earthquake: Where Plates Collide https://qualla.com/1955-lanao-earthquake/ Photo credit Mikenorton, CC BY-SA 3.0. The geology that produced the 1955 earthquake is written in the landscape itself. Lanao del Sur and Lanao del Norte straddle two major fault systems: the western extension of the Mindanao Fault and the northern segment of the Cotabato Trench, both formed by the slow-motion collis...

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Image: Mikenorton | CC BY-SA 3.0

]]> Thu, 09 Apr 2026 00:00:00 GMT https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/w9re-1955-lanao-earthquake-where-plates-collide.mp3 0:06 2 full 1955 Lanao Earthquake: A City Called Dansalan https://qualla.com/1955-lanao-earthquake/ Photo credit Mikenorton, CC BY-SA 3.0. The worst destruction centered on the shores of Lake Lanao, the largest lake in Mindanao. The city of Dansalan -- known today as Marawi -- bore the brunt. Mosques that had served as gathering places for the region's large Muslim population were damaged or destroyed outright. Resi...

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Image: Mikenorton | CC BY-SA 3.0

]]> Thu, 09 Apr 2026 00:00:00 GMT https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/w9re-1955-lanao-earthquake-a-city-called-dansalan.mp3 0:06 3 full 1955 Lanao Earthquake: Faith in the Aftershocks https://qualla.com/1955-lanao-earthquake/ Photo credit Mikenorton, CC BY-SA 3.0. In a region where Muslim and Christian communities lived side by side, the earthquake was interpreted through the lens of faith. Preachers cited the Bible and the Quran. Locals repeated scripture in the trembling hours after the mainshock, as aftershocks continued to rattle throu...

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Image: Mikenorton | CC BY-SA 3.0

]]> Thu, 09 Apr 2026 00:00:00 GMT https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/w9re-1955-lanao-earthquake-faith-in-the-aftershocks.mp3 0:06 4 full 1955 Lanao Earthquake: A President Responds https://qualla.com/1955-lanao-earthquake/ Photo credit Mikenorton, CC BY-SA 3.0. President Ramon Magsaysay declared a state of calamity across four provinces: Misamis Occidental, Misamis Oriental, Lanao, and Surigao. The proclamation, issued on the same day as the earthquake, mobilized government resources to a region that was already among the most remote an...

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Image: Mikenorton | CC BY-SA 3.0

]]> Thu, 09 Apr 2026 00:00:00 GMT https://qualla.com/_m/w/9/r/e/1955-lanao-earthquake-wp/w9re-1955-lanao-earthquake-a-president-responds.mp3 0:06 5 full