EARTHQUAKEM4.9

M4.9 earthquake near La Tirana, Chile

Map: the earthquake near La Tirana, Chile, with plate boundaries

A magnitude 4.9 earthquake struck 16 km (10 mi) west-southwest of La Tirana, Chile on Wednesday, October 14, 2026 at 03:11 UTC, at a depth of 45 km (28 mi), according to the U.S. Geological Survey. Shallow quakes like this one shake the surface hardest. The nearest city of a million or more people is La Paz, Bolivia, about 484 km (301 mi) away.

22 people reported feeling it to USGS “Did You Feel It?”.

MagnitudeM4.9
Depth45 km (28 mi)
Time (UTC)Oct 14 03:11
Location20.36°S 70.27°W
Nearest townLa Tirana · 16 km
Energy338 tons TNT
Aftershocks M2.5+2
Tsunami flagNo
Felt reports22
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Why here?

This earthquake struck about 114 km (71 mi) from the boundary between the South American and Nazca plates. Most earthquakes happen along plate boundaries like this one, where the pieces of Earth’s outer shell collide, pull apart or grind past each other. Stress builds up over years until the rock suddenly slips.

The red lines on the map are plate boundaries.

How strong was it?

Magnitude is logarithmic: each whole step releases about 32 times more energy. This magnitude 4.9 released roughly the energy of 338 tons of TNT. That is about 22 times the energy of a magnitude 4.0, a quake people nearby feel but that rarely causes damage. The strongest earthquake ever recorded, magnitude 9.5 in Chile in 1960, released about 7,900,000 times more than this one.

Aftershocks

In the first 12 days after it, USGS recorded 2 smaller earthquakes of magnitude 2.5 or more within 100 km (62 mi). The largest was a magnitude 4.3 on October 15 at 20:25 UTC.

Outside the United States, USGS mainly lists quakes of about magnitude 4 and up, so smaller aftershocks there are undercounted.

Earthquake history here

Before this earthquake, USGS had recorded 96 earthquakes of magnitude 6 or larger within 300 km (186 mi) since 1900. The strongest:

Official details, updates and the shaking map: USGS event page.

See every earthquake on October 14, 2026 or earthquakes by day.

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