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Argentina

M3.9 Earthquake near SAN JUAN, ARGENTINA (Argentina)

UTC time: 2025-12-18 21:28:53 UTC Local time: —

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About this earthquake

On December 18, 2025 at 21:28 UTC, a magnitude M3.9 earthquake occurred near SAN JUAN, ARGENTINA (Argentina). At around 101 km, the focal depth places this among intermediate-depth events. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks. Argentina: 12 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Details

ID
17a8e483794d55e230b51857118d7530f5769d73
Magnitude
M3.9
Depth
101.0 km
UTC time
2025-12-18 21:28:53 UTC
Local time
—
Country
Argentina
City
San Juan
Source
emsc
Coordinates
-31.14000, -68.38000
Temperature
31.4°C

Depth profile

Depth profile Depth: 101 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 101 km
Intermediate
101 km
101 km — shallower than the regional average (143.1 km)
Regional average: 143.1 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Tupungatito
    Distance: 287 km ·Stratovolcano ·Elevation: 5'660 m ·Last eruption: 1987 ·Chile-Argentina
  • San Jose
    Distance: 327 km ·Stratovolcano(es) ·Elevation: 6'070 m ·Last eruption: 1960 ·Chile-Argentina
  • Maipo
    Distance: 363 km ·Caldera ·Elevation: 5'323 m ·Last eruption: 1912 ·Chile-Argentina
  • Atuel, Caldera del
    Distance: 410 km ·Caldera ·Elevation: 5'189 m ·Argentina
  • Palomo
    Distance: 425 km ·Stratovolcano ·Elevation: 4'860 m ·Chile
  • Tipas
    Distance: 439 km ·Complex ·Elevation: 6'658 m ·Argentina

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Domingo Faustino Sarmiento AirportArgentina · UAQ · SANU
    48.1 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-06

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

San Juan

Context for this earthquake

06 Sep 2025 – 06 Sep 2026 · M ≥ 3.0 · 394 Catalogue entries

Of 393 other entries for this area and period, 53 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Argentina

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Argentina

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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