What kind of volcano is San Miguel (Chaparrastique)?

San Miguel (Chaparrastique) is classified as a Stratovolcano in El Salvador. Its tectonic setting is Subduction zone / Continental crust (> 25 km).

How is seismicity near San Miguel (Chaparrastique) monitored here?

Earthquakes within 50 km of the crater are aggregated from 18 seismic networks and checked against a swarm rule that compares the current rate with this volcano's own 30-day background. Ash advisories come from the VAAC centres that are connected.

Symmetrical cone of San Miguel (Chaparrastique) volcano, El Salvador

Photo:Carlos Pullingervia Smithsonian GVP

Volcano Dossier•GVP #343100

13.43°N, 88.27°W

Erupted since 2000

Volcano San Miguel (Chaparrastique)

Der von Einheimischen Chaparrastique genannte, ebenmäßige Kegel erhebt sich über der salvadorianischen Stadt San Miguel und zählt mit seit dem 16. Jahrhundert belegten Lavaströmen zu den aktivsten Vulkanen Mittelamerikas. Eine plötzliche Explosion im Dezember 2013 zwang Tausende Menschen zur Evakuierung, kleinere Ascheausbrüche folgten, zuletzt 2023.

Last Eruption

2023

Erupted since 2000

Summit Elevation

2.1 km

Stratovulkan · Andesit / Basaltandesit

Seismic State

Normal Baseline

0 events (1.0x rate)

Interactive Volcano & Seismicity Map

Seismicity within 50 km radius, active VAAC ash plumes, and tectonic plate boundaries.

Recent seismicity within 50 km

0 events in the last 12 h within 25 km of the crater.

Zeit	Magnitude	Epizentrum / Ort	Entfernung	Tiefe
25d ago	M3.5	79 km östlich von San Salvador (El Salvador)	27 km	5 km
25d ago	M3.1	79 km östlich von San Salvador (El Salvador)	27 km	1.7 km
25d ago	M3.1	78 km östlich von San Salvador (El Salvador)	28 km	2 km

Geological & Tectonic Profile

Stratovulkan

San Miguel (Chaparrastique) is an active Stratovolcano formed in an active Subduction zone / Continental crust (> 25 km). Dominant lithology: Andesite / Basaltic Andesite.

Edifice TypeStratovulkan

Major RockAndesit / Basaltandesit

Tectonic SettingSubduktionszone

Volcanic ArcVulkanbogen Mittelamerikas

Volcanic Dossier

VN #343100

Official catalogue parameters, coordinates, elevation and geotectonic classification.

LandEl Salvador

Koordinaten des Kraters13.434°, -88.269°

Summit Elevation2.1 km

SubregionVulkanbogen Mittelamerikas

Catalog SourceSmithsonian GVP (#343100)

Authoritative Monitoring Infrastructure

All 18 Networks & VAAC →

Seismic ObservatoryGSN / FDSN

Global Seismographic Network & Regional Centers

Official Portal

ICAO Aviation Ash Center

ICAO Volcanic Ash Advisory Network

International Civil Aviation Organization

VAAC Advisory Desk

Swarm telemetry correlated across 18 networks against a 30-day baseline.Read Science & Physics →

Häufig gestellte Fragen (FAQ)

Geprüfte wissenschaftliche, operative und Notfallprotokolle

The most recent eruption of San Miguel (Chaparrastique) recorded by the Smithsonian Global Volcanism Program was in 2023.

Catalogue: Smithsonian Institution, Global Volcanism Program.Smithsonian GVP profile