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Argentina · San Juan

M3.7 Earthquake near Ullúm, San Juan (Argentina)

UTC time: 2026-05-21 01:37:22 UTC Local time: —

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About this earthquake

On May 21, 2026 at 01:37 UTC, a magnitude M3.7 earthquake occurred near Ullúm, San Juan (Argentina). At around 97 km, the focal depth places this among intermediate-depth events. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by EMSC. Argentina: 10 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

ID
4f9757f97e0eaec87e817d31c937836ab4962107
Magnitude
M3.7
Depth
97.0 km
UTC time
2026-05-21 01:37:22 UTC
Local time
—
Country
Argentina
State
San Juan
City
Ullúm
County
Ullúm
Source
emsc
Coordinates
-31.21000, -68.95000
Temperature
1.1°C

Depth profile

Depth profile Depth: 97 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 97 km
Intermediate
97 km
97 km — shallower 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: 259 km ·Stratovolcano ·Elevation: 5'660 m ·Last eruption: 1987 ·Chile-Argentina
  • San Jose
    Distance: 300 km ·Stratovolcano(es) ·Elevation: 6'070 m ·Last eruption: 1960 ·Chile-Argentina
  • Maipo
    Distance: 339 km ·Caldera ·Elevation: 5'323 m ·Last eruption: 1912 ·Chile-Argentina
  • Atuel, Caldera del
    Distance: 387 km ·Caldera ·Elevation: 5'189 m ·Argentina
  • Palomo
    Distance: 398 km ·Stratovolcano ·Elevation: 4'860 m ·Chile
  • Tinguiririca
    Distance: 422 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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Country statistics · Argentina

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

Stats (last 24h)

Global (24h)
591
Country (24h)
Argentina
10
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