4.9

M4.9 Earthquake 34 km N of Guiyang, ChinaNovember 24, 2021

2021-11-24 09:16:39 UTC (2021-11-24) · approx. 4:16 PM UTC+7 local

Felt by 2 people across nearby locations.

MagnitudeM4.9(mb)
Time09:16 UTC4:16 PM UTC+7
Depth10.0 kmshallow crustal
Coordinates26.895°, 106.686°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On November 24, 2021 at 09:16 UTC, a magnitude 4.9 shallow crustal earthquake struck 34 km N of Guiyang, China, at a depth of 10.0 km and coordinates 26.8946°, 106.6865°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 26.89°, 106.69°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 2 citizen responses 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 M4.9 earthquake near 34 km N of Guiyang, China

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

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
26.8946°N
106.6865°E
Felt Reports
2
DYFI responses
Community Intensity
4.3
CDI from reports

Technical Information

Event ID
us7000fwns
Event Type
earthquake
Status
✓ Reviewed
Significance
370
Azimuthal Gap
83.0°
Min Station Distance
4.176°
RMS Residual
0.56 sec
Last Updated
2022-01-29 22:55:39 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Guiyang, China?

The magnitude 4.9 earthquake that struck 34 km N of Guiyang, China on November 24, 2021 at 09:16 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 26.8946°, 106.6865°, which is 34 km N of Guiyang, China.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000fwns). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, November 24, 2021). M4.9 Earthquake 34 km N of Guiyang, ChinaNovember 24, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fwns/