5.1

M5.1 Earthquake near Southern Qinghai, China — May 22, 2021

2021-05-22 02:38:45 UTC (2021-05-22) · approx. 9:38 AM UTC+7 local

Felt by 1 person across nearby locations.

MagnitudeM5.1(mb)
Time02:38 UTC≈ 9:38 AM UTC+7
Depth10.0 kmshallow crustal
Coordinates34.548°, 98.938°
Felt by1DYFI response
Status✓ Reviewed by USGS

On May 22, 2021 at 02:38 UTC, a magnitude 5.1 shallow crustal earthquake struck near Southern Qinghai, China, at a depth of 10.0 km and coordinates 34.5476°, 98.9375°.

Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 34.55°, 98.94°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M5.1 earthquake near Southern Qinghai, China

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
5.1 mb
Depth
10.0 km
shallow crustal
Location
34.5476°N
98.9375°E
Felt Reports
1
DYFI responses
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
us7000e587
Event Type
earthquake
Status
✓ Reviewed
Significance
400
Azimuthal Gap
30.0°
Min Station Distance
4.139°
RMS Residual
0.99 sec
Last Updated
2025-12-22 19:00:50 UTC

Common Questions

How strong was the magnitude 5.1 earthquake near Southern Qinghai, China?

The magnitude 5.1 earthquake that struck near Southern Qinghai, China on May 22, 2021 at 02:38 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at 34.5476°, 98.9375°, which is near Southern Qinghai, China.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000e587). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, May 22, 2021). M5.1 Earthquake near Southern Qinghai, China — May 22, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000e587/