EARTHQUAKEM4.7

M4.7 earthquake near Mazha, China

Map: the earthquake near Mazha, China, with plate boundaries

A magnitude 4.7 earthquake struck 81 km (50 mi) east-northeast of Mazha, China on Wednesday, October 28, 2026 at 15:40 UTC, at a depth of 10 km (6 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 Urumqi, about 384 km (239 mi) away.

MagnitudeM4.7
Depth10 km (6 mi)
Time (UTC)Oct 28 15:40
Location44.24°N 82.80°E
Nearest townMazha · 81 km
Energy169 tons TNT
Tsunami flagNo
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Why here?

This earthquake struck about 1,319 km (820 mi) from the nearest major plate boundary, which makes it an intraplate earthquake. These happen on old faults inside a plate, where stress from the plate’s slow movement is released. They are less common, but can surprise areas that rarely feel quakes.

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 4.7 released roughly the energy of 169 tons of TNT. That is about 11 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 16,000,000 times more than this one.

Earthquake history here

Before this earthquake, USGS had recorded 18 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 28, 2026 or earthquakes by day.

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