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Argentina · San Juan

M2.5 Earthquake near Ullúm, San Juan (Argentina)

UTC time: 2026-09-16 19:40:42 UTC Local time: —

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About this earthquake

A magnitude M2.5 earthquake was recorded near Ullúm, San Juan (Argentina) on September 16, 2026 at 19:40 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by EMSC. Argentina: 17 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

ID
448fd8c74117bd97f8c5da7acd4d8bc52f63b7f6
Magnitude
M2.5
Depth
10.0 km
UTC time
2026-09-16 19:40:42 UTC
Local time
—
Country
Argentina
State
San Juan
City
Ullúm
County
Ullúm
Source
emsc
Coordinates
-31.07000, -68.50000
Temperature
22.7°C

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — shallower than the regional average (142.1 km)
Regional average: 142.1 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Tupungatito
    Distance: 289 km ·Stratovolcano ·Elevation: 5'660 m ·Last eruption: 1987 ·Chile-Argentina
  • San Jose
    Distance: 329 km ·Stratovolcano(es) ·Elevation: 6'070 m ·Last eruption: 1960 ·Chile-Argentina
  • Maipo
    Distance: 366 km ·Caldera ·Elevation: 5'323 m ·Last eruption: 1912 ·Chile-Argentina
  • Atuel, Caldera del
    Distance: 414 km ·Caldera ·Elevation: 5'189 m ·Argentina
  • Palomo
    Distance: 428 km ·Stratovolcano ·Elevation: 4'860 m ·Chile
  • Tipas
    Distance: 431 km ·Complex ·Elevation: 6'658 m ·Argentina

San Juan

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 1,007 Catalogue entries

Of 1,006 other entries for this area and period, 875 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Argentina

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