La Rioja, Argentina – Earthquakes

This page summarizes earthquakes in La Rioja (Argentina). The most recently recorded event was a magnitude M3.9 earthquake near Departamento Vinchina on 2026-09-17 23:28:47 UTC. All event lists and map markers are limited to the last 30 days.

Seismic profile ↓
Earthquakes (last 30 days)
31
Max magnitude (last 30 days)
M3.9
Avg magnitude (last 30 days)
M2.85
Avg depth (last 30 days)
91 km

Seismic profile

Analysis period18 Sep 2025 – 18 Sep 2026Data as of: 18 Sep 2026 · 10:00 UTC
Minimum magnitude

What the data show

La Rioja · M ≥ 3.0

After source reconciliation, the catalogue contains 80 event entries of M3.0 or above for this area and period, spread over 67 days.

Catalogue entries8018 Sep 2025 – 18 Sep 2026
Strongest recorded earthquakeM5.7La Rioja ↗
Depth · median115.5 km80 events with valid depth
Last 30 days10Previous 30 days: 5

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

18 Sep 2025 – 18 Sep 2026

Earthquakes by month

M ≥ 3.0

Each bar counts events within the selected period. Hatched months are only partially included.

View data table
MonthAnalysis periodCatalogue entries
September 2025 · Partial month18 Sep 2025 – 30 Sep 20250
October 202501 Oct 2025 – 31 Oct 20255
November 202501 Nov 2025 – 30 Nov 20251
December 202501 Dec 2025 – 31 Dec 20253
January 202601 Jan 2026 – 31 Jan 20268
February 202601 Feb 2026 – 28 Feb 202613
March 202601 Mar 2026 – 31 Mar 20262
April 202601 Apr 2026 – 30 Apr 20267
May 202601 May 2026 – 31 May 20265
June 202601 Jun 2026 – 30 Jun 20267
July 202601 Jul 2026 – 31 Jul 202615
August 202601 Aug 2026 – 31 Aug 20266
September 2026 · Partial month01 Sep 2026 – 18 Sep 20268

How strong were the earthquakes?

Catalogue entries · 80

M 3.0 – < 4.068
M 4.0 – < 5.09
M 5.0 – < 6.03
M ≥ 6.00

At what depth did they occur?

80 events with valid depth

0 – < 30 km22
30 – < 70 km2
70 – < 300 km54
300 – 750 km2

0 events without valid depth are excluded here.

Depth · median

Half of the available values lie on either side of the median; ties are possible.

Current period in context

Last 30 days10
Previous 30 days5
Median of the eleven previous 30-day periods6

Same magnitude threshold, separate periods. Differences may also reflect changes in recording. No hazard level or forecast is inferred.

Where were earthquakes recorded?

Events assigned to La Rioja in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

The interactive map complements the event links on this page.

Marker size and colour indicate magnitude.

Strongest recorded earthquake

18 Sep 2025 – 18 Sep 2026 · M ≥ 3.0

Data and methodology

Analysis period: 18 Sep 2025 10:00 – 18 Sep 2026 10:00 UTC

Data and methodology

Reports are first reconciled using existing event associations. Additional reports from different sources are consolidated only when every pair is within 5 seconds, 10 km and 0.5 magnitude units, source groups do not overlap and exactly one group matches. Ambiguous cases remain separate. The preferred report determines magnitude, time and area; period and magnitude filters are applied afterwards. The start is included and the end excluded (UTC).

4 additional source reports were consolidated during source reconciliation.

Events assigned to La Rioja in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

Source reports used

The preferred report of each group is counted. Source priority follows the earthquake list. Different magnitude types and recording gaps limit comparability.

  • EMSC73
  • GFZ4
  • USGS3

The profile is recalculated hourly from the earthquake catalogue. Later source revisions may also change historical values.

Data as of: 18 Sep 2026 · 10:32 UTC

Map (last 30 days)

< 2 2–4 4–5 ≥ 5

About La Rioja

La Rioja, officially Province of La Rioja is a province of Argentina located in the west of the country. The landscape of the province consists of a series of arid to semi-arid mountain ranges and agricultural valleys in between.

Seismic activity in 2026

In 2026, La Rioja recorded 204 earthquakes within Argentina. The average magnitude was M2.95. The strongest event reached M5.3.

Based on the number of recorded earthquakes in 2026, La Rioja is currently among the Top 5 most active regions in Argentina (rank #4 by count).

Considering the strongest recorded event in 2026, La Rioja is among the Top 5 strongest regions in Argentina (rank #4 by max magnitude).

Located on the South America Plate.

Earthquakes in La Rioja (last 30 days)

M3.9
Departamento Vinchina
2026-09-17 · 23:28 UTC · 109 km
›
M2.8
General Lamadrid
2026-09-17 · 03:21 UTC · 104 km
›
M2.8
La Rioja
2026-09-17 · 03:14 UTC · 10 km
›
M2.5
Departamento Famatina
2026-09-15 · 20:02 UTC · 137 km
›
M3.3
Departamento Capital
2026-09-15 · 13:23 UTC · 10 km
›
M2.7
General Lamadrid
2026-09-12 · 08:46 UTC · 112 km
›
M2.7
Departamento Independencia
2026-09-12 · 00:06 UTC · 97 km
›
M2.6
General Lamadrid
2026-09-11 · 20:30 UTC · 131 km
›
M2.7
General Lamadrid
2026-09-10 · 14:52 UTC · 10 km
›
M3.0
Departamento Vinchina
2026-09-10 · 07:35 UTC · 107 km
›
M3.0
Departamento Famatina
2026-09-10 · 01:41 UTC · 123 km
›
M2.5
Departamento Rosario Vera Peñaloza
2026-09-09 · 18:18 UTC · 142 km
›
M2.5
Departamento Famatina
2026-09-08 · 20:18 UTC · 126 km
›
M2.6
Departamento Famatina
2026-09-06 · 18:03 UTC · 120 km
›
M3.2
General Lamadrid
2026-09-06 · 07:30 UTC · 105 km
›
M2.9
Departamento Famatina
2026-09-06 · 04:49 UTC · 109 km
›
M2.7
Departamento San Blas de los Sauces
2026-09-05 · 05:41 UTC · 139 km
›
M2.7
Departamento Chilecito
2026-09-04 · 22:09 UTC · 111 km
›
M3.2
Departamento General Ocampo
2026-09-04 · 01:00 UTC · 10 km
›
M3.2
Departamento General Ocampo
2026-09-04 · 00:40 UTC · 10 km
›
M3.4
Departamento Vinchina
2026-09-02 · 12:54 UTC · 119 km
›
M2.7
General Lamadrid
2026-09-02 · 09:21 UTC · 91 km
›
M2.5
Departamento Vinchina
2026-08-29 · 11:42 UTC · 10 km
›
M2.6
Pituil
2026-08-28 · 11:39 UTC · 129 km
›
M2.8
Departamento General San Martín
2026-08-27 · 08:43 UTC · 138 km
›
M2.9
Departamento Famatina
2026-08-26 · 02:06 UTC · 134 km
›
M2.5
Departamento Chilecito
2026-08-24 · 00:47 UTC · 10 km
›
M3.1
Departamento Capital
2026-08-23 · 19:03 UTC · 10 km
›
M2.6
Departamento Chilecito
2026-08-21 · 20:59 UTC · 115 km
›
M3.1
Departamento Famatina
2026-08-20 · 13:13 UTC · 125 km
›
M2.5
Departamento Famatina
2026-08-20 · 00:46 UTC · 118 km
›