| Event code | GE-VAC/05425/CHL |
|---|---|
| Main category | Geological Event |
| Sub category | volcano activity |
| Event date (UTC) | Thu, 21 Sep 2023 06:05:53 +0000 |
| Last update (UTC) | Mon, 02 Oct 2023 04:41:04 +0000 |
| Continent | South-America |
|---|---|
| Country | Chile |
| Administration area | Province of Araucanía |
| Settlement | |
| Exact location | Volcán Villarrica |
| Open Location Code: | 47GCH3GX+8H |
| Size of affected area | County-level |
| Additional events |
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| Urgency | Past |
|---|---|
| Certainty | Observed |
| Severity | Extreme |
| Category | Geo |
The volcano remains active. At about 09:14 local time yesterday, a low-level grey-to-brown bursting of ash and gas emissions occurred at the summit vent. Emissions were confined to the crater and rose to only approx. 50 meters above the vent.
The Argentine Volcanic Surveillance Observatory (OAVV) recorded a long-period earthquake during the eruption.
The elevated activity at the volcano continues. Fine ash emissions have increased over the past 48 hours, generating tephra covering the upper-to-middle snowy part of the edifice. A continuous small ash column rose about 110 meters above the crater. Near-constant strombolian eruptions continue to take place from the summit vent, characterized by ejecting glowing scoria bombs thrown at approx. height of 60 meters above the vent, some lava jets surpassed 80 meters. Two pit lava-filled craters (approx. 80 meters deep) continue to be active at stable conditions, suggesting a delicate equilibrium between heat and magma supply and loss (through cooling and mild emissions during degassing). Seismic recordings of the volcano observatory Servicio Nacional de Geología y Minería (SERNAGEOMIN) continue to monitor ongoing ground vibrations (so-called tremor), indicating shifting of a new batch of magma inside the volcano's feeder pipe. The latest RSAM value decreased from 1.2 um/sec. to 0.2 3 um/sec over the past 24 hours. In addition, monitoring stations recorded two volcano-tectonic and 484 low-frequency earthquakes on 1 October. The warning bulletin states that pyroclastic flows, lahars, and/or debris avalanches may occur if the activity increases rapidly and could affect an area of about 8 km distance from the main crater. The Volcanic Alert Level remains at Orange.
The activity of the volcano remains elevated. The seismic instrument continues to monitor the sustained ground vibration (so-called tremor), hinting at a constant arrival of magma into the system, a tell-tale sign of delicate equilibrium between heat and magma supply and loss. The recently recorded tremor lasted approx. 6,5 hours with mean RSAM values of 1.7 µm/s. Given the current activity at the volcano, strombolian-sized explosions appear to be stronger-than-usual ones, characterized by occasional vigorous spattering and persisting ash emissions. From the latest satellite image of the volcano, the northern and southern flanks seem to be affected by fresh ash deposits on the snow cover. The warning bulletin states that pyroclastic flows, lahars, and/or debris avalanches may occur if the activity increases rapidly and could affect an area of about 8 km distance from the main crater. The Volcanic Alert Level remains at Orange.
The activity of the volcano remains elevated. The seismic instrument continues to monitor the sustained ground vibration (so-called tremor), hinting at a constant arriving of magma into the system, a tell-tale sign of delicate equilibrium between heat and magma supply and loss. The recently recorded tremor lasted approx. 6,5 hours with mean RSAM values of 1.7 µm/s. Given the current activity at the volcano, strombolian-sized explosions appear to be stronger-than-usual ones, characterized by occasional vigorous spattering and persisting ash emissions. From the latest satellite image of the volcano, the northern and southern flanks seem to be affected by fresh ash deposits on the snow cover. The warning bulletin states that pyroclastic flows, lahars, and/or debris avalanches may occur if the activity increases rapidly and could affect an area of about 8 km distance from the main crater. The Volcanic Alert Level remains at Orange.
The heightened levels at the volcano persist. Seismic recordings of the volcano observatory Servicio Nacional de Geología y Minería (SERNAGEOMIN) continue to monitor ongoing ground vibrations (so-called tremor), indicating shifting of a new batch of magma inside the volcano's feeder pipe. The average value of RSAM reached a maximum value of 1.85 um/sec. In addition, monitoring stations recorded two volcano-tectonic and 181 low-frequency earthquakes between 25-26 September. During 25-26 overnight, sporadic spattering activity was observed from the summit vent, represented by glowing, juvenile lapilli-to-bomb-sized scoria fragments that rose about 80 meters above the vent. Sustained black-colored ash emissions continued yesterday morning, ranging between 06:39 and 08:20 local time. The Volcanic Alert Level remains at Orange with a 500-meter exclusion zone around the main crater in place.
| Number of dead: | 0 person(s) |
|---|---|
| Number of injured: | 0 person(s) |
| Number of Affected: | 0 person(s) |
| Number of Rescued/evacuated: | 0 person(s) |
| Number of Missing: | 0 person(s) |
| Number of Infected: | 0 person(s) |
| Code2 | CL |
|---|---|
| Code | CHL |
| Name | Chile |
| LocalName | Chile |
| GovernmentForm | Republic |
| Continent | South America |
| Region | South America |
| SurfaceArea | 756626.00 |
| IndepYear | 1810 |
| Population | 15211000 |
| LifeExpectancy | 75.7 |
| GNP | 72949.00 |
| GNPOld | 75780.00 |
| Capital | 554 |