M7.4 Earthquake 41 km ESE of San Pedro de Atacama, Chile — July 19, 2024
2024-07-19 01:50:48 UTC (2024-07-19) · approx. 8:50 PM UTC-5 local
Felt by 216 people across surrounding communities. Maximum shaking intensity MMI 6.7 (very strong).
On July 19, 2024 at 01:50 UTC, a magnitude 7.4 intermediate depth earthquake struck 41 km ESE of San Pedro de Atacama, Chile, at a depth of 127.3 km and coordinates -23.0791°, -67.8404°. The earthquake was reported felt by 216 peopleacross surrounding communities, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 6.7 (very strong). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 119 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 998, making it one of the more significant events of the week. The nearest populated place is Calama (population 143,084).
Physical scale: An earthquake of magnitude 7.4 releases seismic energy equivalent to roughly 1.9 megatons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 77 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Chile, a region characterized by the Peru-Chile Trench, where the Nazca Plate subducts beneath South America at 65-80 mm per year. The nearest mapped fault system is the Peru-Chile Trench. View all earthquakes in Chile.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
What the Shaking Felt Like
At MMI 6.7 (very strong), people in the most strongly affected areas would have experienced: Strong shaking felt by everyone. Heavy furniture may move. Books fall from shelves. Plaster and chimneys may crack. Damage is generally slight in well-built structures.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 216 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 11,898 |
| MMI 4 | light | 1,962,227 |
| MMI 5 | moderate | 1,240,076 |
| MMI 6 | strong | 208,252 |
| MMI 7 | very strong | 208 |
Earthquake Details
-67.8404°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 7.4 earthquake near San Pedro de Atacama, Chile?
The magnitude 7.4 earthquake that struck 41 km ESE of San Pedro de Atacama, Chile on July 19, 2024 at 01:50 UTC had a depth of 127.3 km. It was felt by 216 people with maximum shaking intensity of MMI 6.7 (very strong). For context, this was a strong earthquake capable of causing significant damage.
Where did the earthquake occur?
The earthquake epicenter was located at -23.0791°, -67.8404°, which is 41 km ESE of San Pedro de Atacama, Chile. The nearest populated place is Calama (population 143,084). View all earthquakes in Chile.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 7.4 earthquakes can continue for months to years and gradually diminish over time.
Has Chile had earthquakes this big before?
The largest recorded earthquake in Chile was the M9.5 Great Chilean earthquake of May 22, 1960. Today's magnitude 7.4 event is significantly smaller than that historical record.
Actions
Location
Authoritative source: USGS event page (event ID: us7000n05d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, July 19, 2024). M7.4 Earthquake 41 km ESE of San Pedro de Atacama, Chile — July 19, 2024. Retrieved September 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000n05d/