Credit: Philipson Bani, IRD volcanologist, Laboratoire Magmas Volcans.
New footage from Manaro Voui on Ambae Island shows an eruption that is far more intense than a routine volcanic pulse. A thick ash column rises violently from the centre of the crater and builds in heavy stacked clouds that push upward in repeated bursts. The colour of the plume shifts from pale grey to darker tones as fresh ash and debris surge through it. At the base of the eruption column a deep red glow is visible through the haze, which confirms that incandescent material is being ejected from within the crater. The scene is dominated by a sustained rise of ash, gas, and heated rock fragments that climb rapidly above the rim of the caldera. Nothing about the behaviour in the video suggests a stable system. The eruption is forceful, noisy, and visibly driven by strong pressure cycling from below the crater lake.
The crater walls around the vent are coated in old ash that has settled into deep channels carved by previous activity. The landscape looks raw and unstable, with steep slopes that have been shaped by repeated eruptions over the years. In the new footage those slopes are partly obscured by drifting ash and steam that roll across the caldera floor as each new burst rises. The plume forms dense cauliflower shaped clouds that billow outward before thinning into the wind. The consistency of the ash column shows that fresh material is being supplied constantly and not in isolated events. The eruption is active, coherent, and maintaining strength with each new pulse.
The audio captured in the footage adds another dimension to the threat. Beneath the wind and the ambient noise there is a deep, heavy rumble that repeats in slow cycles. The sound carries the weight of a pressurised vent system that is releasing energy in intervals. It is not a soft venting noise. It is the kind of sub-surface vibration that suggests the magma water interaction inside the crater lake is intense and ongoing. When the plume expands the rumble deepens, and the caldera walls echo the sound across the basin. It creates the impression of a confined space under strain, with each cycle pushing up a new wave of ash and glowing ejecta.
Credit: Philipson Bani, IRD volcanologist, Laboratoire Magmas Volcans.
Light ash drift is visible around the rim as smaller particles detach from the main column and move laterally before falling out of view. These thinner veils of ash are often early signs of instability in the upper column. When the base of the plume glows with red light it is clear that fresh hot material is being thrown upward. That glow is unmistakable in multiple frames of the video. It is a mark of direct ejection from the vent rather than simple steam flashes. The colour is consistent with lava fragments or superheated ejecta forced through water in explosive contact.
The three kilometre summit exclusion zone remains justified by what the footage shows. The crater lake is a proven driver of sudden transitions in behaviour when heat rises from below. The interaction between rising material and lake water can produce violent explosions without warning. The video captures moments where the base of the plume expands in fast surges that push ash outward before the column stabilises again. These bursts represent high risk events for anyone too close to the rim. Even at distance the rising plume demonstrates the potential for ash fall depending on wind shifts around Ambae.
The crater floor is hidden behind the rising plume, but the turbulence inside the column tells the story of what is happening below. The plume does not drift upward gently. It shakes, rolls, and sends fast moving pockets of ash upward through the column. These pulses reveal internal fragmentation of material as it meets water and then rises toward the surface. The structure of the eruption column matches what would be expected from an active shallow vent beneath a lake where pressure differences are sharp and constantly changing. The red glow confirms that the heat source is strong. The ash density confirms that fragmentation is efficient. The sound confirms that cycles are continuing.
The surrounding slopes are grey and scored by past eruptions. The new ash falling across parts of the ridge suggests that the current phase may intensify. When the plume rises at the speed seen in the video the system is operating under strong thermal lift that can sustain high altitude ash movement. This affects visibility, air quality, and aviation routing, but the immediate concern is the behaviour inside the caldera itself. The footage shows a volcano with a live pulse, a hot core, and an active interaction zone at the lake surface.
In recent years Manaro Voui has produced both steady periods and sharp escalations. The video from this eruption fits the latter pattern. The energy is clear. The pressure cycles are clear. The glowing base of the plume is clear. The eruption is not small in appearance even if the alert level technically describes it as minor. The term does not reflect the raw visual force of the event. The new footage gives the closest view yet of the current eruption phase, and everything visible in the plume points to a system that is running hot and moving through cycles that warrant close observation.
Credit: Philipson Bani, IRD volcanologist, Laboratoire Magmas Volcans.
