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Argentina · San Juan

M4.2 Earthquake near Ullúm, San Juan (Argentina)

UTC time: 2026-02-28 23:05:30 UTC Local time: —

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About this earthquake

A magnitude M4.2 earthquake was recorded near Ullúm, San Juan (Argentina) on February 28, 2026 at 23:05 UTC. At around 190 km, the focal depth places this among intermediate-depth events. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The data is provided by GFZ and cross-checked across seismological networks. Argentina: over the past 24 hours, QuakeMap24 logged 6 earthquakes, the strongest at M3.7.

Details

ID
66c6974e2980773eb9fd3ba62783bd97df8a0951
Magnitude
M4.2
Depth
190.0 km
UTC time
2026-02-28 23:05:30 UTC
Local time
—
Country
Argentina
State
San Juan
City
Ullúm
County
Ullúm
Source
gfz
Coordinates
-31.14000, -69.06000
Temperature
11.3°C

Depth profile

Depth profile Depth: 190 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 190 km
Intermediate
190 km
190 km — deeper than the regional average (140.6 km)
Regional average: 140.6 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: 263 km ·Stratovolcano ·Elevation: 5'660 m ·Last eruption: 1987 ·Chile-Argentina
  • San Jose
    Distance: 305 km ·Stratovolcano(es) ·Elevation: 6'070 m ·Last eruption: 1960 ·Chile-Argentina
  • Maipo
    Distance: 344 km ·Caldera ·Elevation: 5'323 m ·Last eruption: 1912 ·Chile-Argentina
  • Atuel, Caldera del
    Distance: 392 km ·Caldera ·Elevation: 5'189 m ·Argentina
  • Palomo
    Distance: 402 km ·Stratovolcano ·Elevation: 4'860 m ·Chile
  • Tinguiririca
    Distance: 426 km ·Stratovolcano ·Elevation: 4'280 m ·Last eruption: 1917 ·Chile

San Juan

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 413 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · Argentina

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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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