The Eruption of Mayon Volcano is a Warning to the World

Añadido: 2026-05-11

[00:00:00]The Mayon volcano in northeast Albbe province has been showing signs of volcanic activity since last week.

[00:00:07]>> Mayon volcano is erupting again and the morning briefings are not telling you what the scientists at Lingan Hill are actually seeing. Lava past the halfway mark of the danger zone. Pyrolastic flows in three gullies. Over 3,000 metric tons of sulfur dioxide a day.

[00:00:23]Numbers the public has heard before. But the deformation pattern climbing across the observatory monitors does not match any previous Mayon eruption on file. It matches something else.

[00:00:33]>> A 7 km danger zone has been established around the volcano.

[00:00:37]>> Something the volcanologists have started quietly cross referencing against monitoring stations on the other side of the Pacific. And that comparison is the warning.

[00:00:47]The mountain never sleeps.

[00:00:50]Ed Laguerta has been watching Mayon since 1993. By now, he has personally lived through more eruptions of this volcano than most volcanologists anywhere on the planet have witnessed in their careers. His office at the Lingan Hill Observatory sits on the southeastern flank of the very thing he is studying. There is a panoramic window. Mayon fills it. Every morning, he walks past computer monitors where his team interprets graphs, tables, and software readouts of what is happening kilome below his feet. Different specialists handle different layers, including the gases mixing inside the chamber, the magma collecting and migrating, and the small earthquakes that signal new magma breaking through the crust.

[00:01:31]>> Nearly 15,000 people in the Philippines have been evacuated from their homes since a volcano began spewing hot lava.

[00:01:38]>> When Mayon stirs, the central Fivolk's office in Dilimon sends in additional experts. The room fills up. The panoramic window keeps doing what it always does. Luerta has said in interviews that what makes the job hard is that everything you are studying is happening below ground far from human senses. You are guessing what the volcano is doing using the instruments that detect what you cannot see. That is the part most people never think about.

[00:02:02]The volcanologist standing in front of the camera is not actually looking at the volcano. He is looking at numbers that describe what is happening inside it. And those numbers on this eruption are doing something a little strange.

[00:02:14]Here is what the surface looks like even before the data starts to misbehave.

[00:02:19]Mayon is an Andesitic strat volcano in the Bol volcanic ark nearperfect in its symmetry rising 2,463 m above the coastal plane of Albay province. It has erupted more than 50 times since 1616. On average, it goes off every 3 to 10 years. The towns of Legazby, Duraga, Kamalague, Guinobatan, Liao, Tobacco, Malipo, and Sto. Domingo divide its base like slices of a pie.

[00:02:47]Almost 50,000 people live within 10 km of the summit. The fertile volcanic soil is exactly why they live there. The same eruptions that built the soil are the eruptions they have to evacuate from.

[00:02:58]The geology is straightforward and outline. The Philippine Sea plate is being driven beneath the Eurasian plate as the descending slab sinks into the mantle. Mayon is the Philippines's most active volcano with its last eruption occurring in 2018.

[00:03:12]>> Water and gases trapped inside it are released, lowering the melting point of the surrounding rock and generating magma that is less dense than the material above it. That magma rises through fractures, finds a pathway of least resistance, and over thousands of years carves a vertical conduit straight up to the summit. Each eruption deposits another layer on the cone. Lava on the inside, ash on the outside. The shape becomes more symmetrical with every cycle. People look at Mayon and see a perfect mountain. Volcanologists look at the same shape and see a record of repetition. The cleaner the cone, the more times this volcano has reached the breaking point and reset itself the same way. The chemistry is where it gets dangerous. Andic to dacidic magma carries high silica content which makes it viscous. Viscous magma traps gas.

[00:04:00]Trapped gas builds pressure. When the pressure exceeds what the surrounding rock can hold, the system fails violently. Ash columns punch into the stratosphere. Pyrolastic flows race down the slopes faster than any human can outrun. This is why the 6 km danger zone exists. And it is why Atlantis keeps repeating the same sentence at every briefing. Under alert level 3, the volcano is in a state of magmatic unrest and the threat of moderatesized explosions persists. But under alert level three, with the eruption running into its fifth week, the deformation data Atlantis and his team are seeing has started to drift away from the patterns they have on file from previous Mayon eruptions. It is not wildly different. It is just enough to make them check the calibration twice and then check it again.

[00:04:48]The bell tower of Kagsawa.

[00:04:51]40 minutes by car from the observatory.

[00:04:53]In the municipality of Deraga, the bell tower of Kagsawa church rises out of the ground at a strange angle. There is no church around it. The church is buried somewhere underneath the field. On the 1st of February 1814, Mayon erupted with a violence that ranks as the most lethal in its recorded history. Lava and ash buried the town of Kagsawa in terra deep enough to swallow entire buildings whole. About 1,200 people died.

[00:05:19]Witnesses who survived described volcanic mud accumulating to a depth of 30 ft. When the ash settled and the survivors came back, the only thing left visible above the debris was the upper portion of the bell tower. A single weathered stone finger pointing at the sky. It is still there two centuries later. Tourists pose in front of it for photos. School groups walk through the surrounding park. Vendors sell Halo Halo and souvenirs in the parking lot. On clear days, you can stand at the base of the half-bburied tower and look up to see Mayon framed perfectly behind it like the volcano is posing with its own evidence. Every resident of Alb Province knows what the tower means. They grew up with the story. Children are taken there on field trips before they can read.

[00:06:02]Grandparents point up at the cone and tell them what is buried under the grass they are standing on. The stones at the base of the tower are dark and pitted, eaten by two centuries of rain and ash.

[00:06:12]A coconut tree leans over the ruins.

[00:06:15]Cattle graze in the distance. The volcano sits behind it all, watching.

[00:06:19]The tower is what the mountain is capable of when its internal pressure finally releases. And it is also what survives when everything else does not.

[00:06:27]If you have ever wondered why coastal Filipinos rebuild on the same slopes that have already destroyed their towns, the bell tower is part of the answer.

[00:06:35]The soil here is some of the most fertile in the country precisely because of how often Mayon has erupted on top of it. Every catastrophe is also a deposit.

[00:06:43]Every eruption is also a future harvest.

[00:06:45]This is the bargain. People who live in Albay province are not unaware of the risk. They are negotiating with it. The 1,814 eruption is the reason scientists have been so careful with this volcano ever since. It is also the reason a small detail buried inside the historical record matters more than people realize.

[00:07:06]The atmospheric ash from Mayon's 1,814 eruption is believed to have combined with the much larger 1,815 eruption of Mount Tambora in Indonesia to contribute to what came afterward, a global atmospheric disturbance that earned its own name, the year without a summer. That is one of the connections Alanis cannot stop thinking about right now.

[00:07:30]what the instruments show.

[00:07:33]If you want to understand why a routine eruption is being treated differently this time, you have to understand what modern volcano monitoring actually looks like. Forget the cinematic image of a single scientist staring into a crater.

[00:07:45]The reality is a network of instruments distributed around the volcano, each picking up a different signal, all feeding into the observatory in real time. There are three telemetric units mounted on Mayon's slopes, sending data to seven seismometers spread around the volcano. There are electronic distance meters that measure the precise distance between fixed points on the ground, watching for the millimeter scale changes that happen when the mountain inflates from below. There are GPS stations doing the same job from a different angle. There is satellite-based interferometric radar tracking the deformation of the entire cone from orbit. There are gas spectrometers reading the sulfur dioxide flux every day. There are thermal cameras and webcams pointed at the summit 24 hours a day. All of it converges into the Lingan Hill Observatory and the central Fivolks headquarters at the University of the Philippines Dillamin campus. When Alanis steps in front of the cameras at the Yugnian Sabol briefing every morning, he is reporting summaries. In a recent 72 2-hour window, the volcano registered 598 volcanic earthquakes, 814 rockfall events, and 230 pyrolastic density currents. In 1 2 4hour period, it emitted 3,59 metric tons of sulfur dioxide. Plumes rose 100 m above the summit, classified as moderate emission, drifting northwest and west northwest. Lava flows have advanced 3.7 km down one gully, just past half the radius of the 6 km permanent danger zone. These are big numbers, but by Mayon standards, they are not unprecedented. The volcano has produced larger eruptions, denser ash columns, more violent explosions. What is unusual is not the magnitude, it is the shape of the curve. Quick interruption because this is the part where the story stops being just about Mayon. If you want to keep going, hit subscribe and turn on the bell because the next part is what we are not getting from the morning briefings. All right, back to it. When magma rises inside a volcano, the surface above it inflates, sometimes by only a few millime. That inflation can be measured from space.

[00:09:54]Sulfur dioxide emissions can be detected days before any visible eruption. The pattern of small earthquakes around a volcano can reveal the depth of the magma below and the speed at which it is moving. All of these signals converge before an eruption and they have a characteristic shape. Volcanologists call it a precursor signature. Each volcano has its own signature refined by decades of monitoring its individual behavior. Mayon's precursor signature is one of the best documented in the world.

[00:10:25]Luerta has been calibrating it personally for more than 30 years.

[00:10:30]Alanis works inside the framework and his predecessors built. The signature is the reason fees can usually tell days in advance whether a Mayion eruption is going to escalate or settle. This time the signature has a feature that does not match. The deformationation curve is not behaving the way the chamber model predicts. The gas readings are oscillating in a rhythm that is slightly off. The seismicity is concentrated at depths that do not line up with what scientists thought they understood about Mayon's plumbing. None of these anomalies are catastrophic on their own.

[00:11:04]Any one of them could be a calibration issue, a sensor drift, a local artifact.

[00:11:09]All of them together in the same eruption are worth a second look. The second look is what led the team to start comparing notes with stations that are not in the Philippines. Ash in the sky cooling on the ground. This is the part of the story where you have to zoom out because what comes out of a volcano does not stay near the volcano. When Mayon erupts, magma, ash, and gas are transferred directly from the lithosphere into the atmosphere. That sudden injection bypasses every slow natural cycle that normally regulates Earth's heat exchange. Atmospheric chemistry shifts, solar radiation balance shifts, regional climate behavior shifts. The eruption becomes a coupling point between the deep earth and the upper atmosphere, fusing two systems that are normally separated. The mechanism that matters most is sulfur dioxide. When so reaches the stratosphere, it converts into sulfate aerosols. Sulfate aerosols reflect incoming sunlight back into space. The reflection reduces how much solar energy reaches the surface. The result is global cooling, not cooling in the climatological trend sense. Cooling in the someone in Iowa reaches for a jacket in July sense. History has a few moments where this becomes vivid. On the 6th of June 1816, a year after Mount Tambora erupted in Indonesia in the largest volcanic event in recorded human history, snow began falling across Vermont, New Hampshire, and northern New York. It was June. Crops froze. A second frost came on July 9. By the end of August, frost had killed harvests across most of New England. Connecticut and Massachusetts farmers watched their corn turn brown in the fields. People called it 1800 and froze to death. In the Vermont Highlands, families who had been planting for 30 years walked out into their fields in early summer and saw their breath. They had never seen their breath in June. They did not yet know that the cause of it was a mountain on the other side of the world that had finished erupting 14 months earlier.

[00:13:16]across the Atlantic. That same year, the Tambbora aerosol cloud drove down temperatures across Europe, ruined harvests, triggered famine across the continent, and produced sunsets so unnatural that the painter JMW Turner started capturing them on canvas. The skies were chemically altered, the artists could see it, the farmers were starving from it, and the eruption that caused it had ended the previous year.

[00:13:43]On the other side of the planet, the Kagsawa bell tower in Deraga is part of that story. Mayon's eruption in 1814, one year before Tambora, contributed to the atmospheric loading that made 1,816 what it became. A village buried under ash on Luzon. Snow falling on Vermont fields 14 months later. Two events, one sky. Crakatoa's eruption in 1883 produced sunsets so vivid across the northern hemisphere that observers in London and New York wrote letters to newspapers asking if the world was on fire. Mount Pinatubo's eruption in 1991 only a few hundred km from Mayon lowered global average temperatures by approximately 0.5° C for two full years afterward. None of these events were predicted. They simply happened. the planet adjusted around them. Mayon is not in Tambora's magnitude class. Mayon is not even in Pinatubo's magnitude class. Nobody at the Lingan Hill Observatory is suggesting that this eruption will reshape the global climate. That is not the warning. The warning is something different. And it is the part of the conversation that has been building inside the observatory for weeks. Signals across the ring. The Pacific Ring of Fire is not a metaphor.

[00:15:04]It is a vast horseshoe-shaped belt of volcanic arcs and seismic faults encircling the Pacific Ocean where multiple tectonic plates collide, subduct, and slide past one another.

[00:15:15]Mayan sits on it. So does Pinatubo. So does Mount Fuji. So does the entire Illutian Ark. So does the Cascade Range in the Western United States. So do the volcanoes of Indonesia, including Tambora. So does the New Zealand volcanic zone. The ring of fire is the surface expression of where Earth's interior most actively releases energy.

[00:15:38]For decades, the dominant scientific picture was that each volcano on the ring operates relatively independently.

[00:15:44]Local stress builds locally. Local pressure releases locally. The neighbors might feel a small effect, but the system as a whole was not understood as deeply coupled. That picture is now being revised. Networks of monitoring stations across the ring have in recent years begun to record patterns that are difficult to explain. If every volcano is acting alone, anomalies in one region appear to correlate with anomalies thousands of kilome away. Stress migration along subduction boundaries appears more interconnected than anyone expected. This is the partis pulling up at his desk while the cameras are off.

[00:16:22]The deformation pattern at Mayon, the off rhythm signal he could not initially explain, looks similar in shape to precursor signatures being reported at monitoring stations elsewhere in the Western Pacific. Not in a way that proves anything. Not in a way that any responsible scientist would yet announce in a public briefing, but in a way that a 30-year veteran like does not ignore.

[00:16:44]There it is. That is the warning. The eruption of Mayon in itself is not the warning. Mayon erupts. That is what Mayon does. The warning is that the precursor signature of this particular eruption shares features with anomalous readings being recorded at stations distributed across the ring of fire. If Mayon's behavior were happening in isolation, it would be a routine entry in five's logs. Because it is happening alongside similar anomalies at other points on the same tectonic belt, it raises a question that is bigger than any single volcano. The question is whether the ring of fire is going through a coordinated adjustment. A coordinated adjustment does not mean a synchronized catastrophe. Plates move at rates of only a few cm per year. Stress redistributes slowly. The kind of systemwide rebalancing being discussed inside observatories like Lingon Hill plays out across years and decades, not weeks. But the early signature of a systemwide rebalancing is exactly what looks like a series of unusual local anomalies scattered across enormous distances occurring inside the same multi-year window, which is what is being recorded now. The world's volcanic monitoring community is having a quiet conversation about it. The morning briefings in Legospi City do not, not yet. Life under the cone in Camealig on the western flank of the volcano. a farmer who has lived in Mayon's shadow her entire life finished loading her family's belongings into the back of a pickup truck for the third time this year. She has rebuilt this house twice.

[00:18:20]Her parents rebuilt it once before that.

[00:18:23]The cycle is part of the local rhythm.

[00:18:25]The evacuation orders go up. The trucks roll out. The eruption runs its course.

[00:18:30]The lava cools. The ash settles into the soil. The harvests come back better than before. This is the bargain. This is why the towns at the base of the volcano have not moved in 200 years. When she walks out to the road in the morning, the air carries a faint mineral edge.

[00:18:47]Ash has been drifting on the wind for weeks. It coats the leaves of her vegetable garden in a fine gray layer that has to be rinsed off before harvest. Cars parked outside overnight come out looking older than they are.

[00:19:00]Children are kept indoors during heavy fall. The smell when the wind shifts toward the volcano is the smell of a struck match held too long. At night, when the cloud cover breaks, the summit glows orange against the dark. Her grandmother used to call that glow the lady breathing. The local name for the volcano, Daragang Magayon, means beautiful lady. And the legends here treat the mountain as a presence, not a hazard. The lady is breathing again.

[00:19:28]That is what she would have said. What has changed is the conversation she hears at the evacuation centers. The volunteers and emergency officials who run those centers have been doing this work for decades. Many of them like the special operations officer Abundio Nunees at the Albay Public Safety and Emergency Management Office have personally lived through more than half a dozen Mayon eruptions. They know how this is supposed to feel. They know the rhythm of escalation, the language the volcanologists use when an eruption is winding down versus when it is not. The people who run these centers are not panicking. But the questions they are asking each other are slightly different than the questions they would ask in a normal eruption year. They are asking how long this one is going to last. They are asking what the team at Lingon Hill is seeing. Around 40 km away, the Kagsawa bell tower is still standing in its field. Tour groups still walk past it. The soft volcanic ash that has been drifting on the wind for weeks, lands on the tower the same way it lands on everything else in Albay. A thin gray film, gritty if you run your finger across it, faintly sulfurous if you stand close enough to smell it. The tower is not a metaphor anymore. It is two centuries of warning, half buried, refusing to go away.

[00:20:42]The warning in the data.

[00:20:45]A title that says the eruption of Mayan volcano is a warning to the world has to deliver an actual warning. And here it is stripped of any romance. The warning is not about Mayan. The warning is about the network Mayan belongs to scientists who monitor the Pacific Ring of Fire are detecting precursor patterns at multiple geographically distributed stations that taken together are difficult to explain as coincidence. Mayon's current eruption is one node in that pattern. The other nodes are the part that has not made the news yet. This is not a prediction of immediate global catastrophe. Nobody at five and nobody at any of the other monitoring agencies whose data is being quietly cross-referenced is making that claim. What they are noticing is more careful and more important. A possible longduration tectonic adjustment along the ring of fire, manifesting as anomalous local signals at stations separated by thousands of kilometers occurring close enough in time to be worth comparing. If that interpretation holds up under further analysis, it would mean that volcanic and seismic activity around the Pacific basin should be expected to remain elevated for a while, years possibly, maybe longer.

[00:21:54]That is the warning the title promises.

[00:21:56]Not that Mayon will explode. Not that civilization is about to end. The warning is that Mayon is showing the world what one node in a slowly rebalancing tectonic system looks like.

[00:22:07]And that the people watching it are already seeing similar shapes on the screens at other observatories on the same belt. The warning is in the shape of the curve, not the size of the eruption. For most of recorded history, humans treated volcanoes as local threats. A village evacuated, a region recovered, the world moved on. That model does not fit anymore. The atmosphere above Mayon is the same atmosphere that surrounds every other city on Earth. The tectonic boundary that produced this eruption stretches across entire ocean basins. The economic systems built on top of these geological structures are interlin across continents. Aviation networks shut down when ash drifts. Supply chains stutter when ports close. A volcano on a Philippine island does not stay on that island anymore. Neither does the data it produces. Back at Lingan Hill, the panoramic window still frames Mayon.

[00:23:00]Alanis is still giving his morning briefing. Leguerta is still walking past the row of monitors. The deformation graph is still climbing and the comparison data sets from the rest of the Ring of Fire are still on the desk, still open, still waiting for the next reading. The fluorescent light hums. The coffee in the corner of the office has gone cold for the third time this week.

[00:23:21]Outside the window, the volcano releases another small plume into the morning sky, and the seismometers register it before anyone in the room looks up.

[00:23:29]Someone in the hallway is on the phone with the central office in Dillaman. The conversation is quiet. Nobody is in a hurry. Nobody needs to be. The Kagsawa bell tower is still half buried. The farmers in Camealig are still living with the bargain. The eruption is still running. The warning has already been issued. It is in the data. The only thing the world has not yet done is read it. If something in this story shifted the way you think about the ground under your feet, drop one word in the comments. The moment that hit you the hardest. The next investigation in this series goes inside what is happening at one of those other Ring of Fire monitoring stations. The one whose readings Alantis has on his desk.

[00:24:09]Subscribe so you do not miss it. Because if Mayon is the warning, the next one is what the warning was about.