4.7

M4.7 Earthquake 12 km ENE of Laela, TanzaniaOctober 15, 2021

2021-10-15 05:49:29 UTC (2021-10-15) · approx. 7:49 AM UTC+2 local

Felt by 2 people across nearby locations.

MagnitudeM4.7(mb)
Time05:49 UTC7:49 AM UTC+2
Depth10.0 kmshallow crustal
Coordinates-8.533°, 32.159°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On October 15, 2021 at 05:49 UTC, a magnitude 4.7 shallow crustal earthquake struck 12 km ENE of Laela, Tanzania, at a depth of 10.0 km and coordinates -8.5332°, 32.1593°.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -8.53°, 32.16°

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 M4.7 earthquake near 12 km ENE of Laela, Tanzania

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

Earthquake Details

Magnitude
4.7 mb
Depth
10.0 km
shallow crustal
Location
-8.5332°N
32.1593°E
Felt Reports
2
DYFI responses
Community Intensity
4.1
CDI from reports

Technical Information

Event ID
us6000fute
Event Type
earthquake
Status
✓ Reviewed
Significance
341
Azimuthal Gap
100.0°
Min Station Distance
8.005°
RMS Residual
0.81 sec
Last Updated
2021-12-25 22:58:35 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Laela, Tanzania?

The magnitude 4.7 earthquake that struck 12 km ENE of Laela, Tanzania on October 15, 2021 at 05:49 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 -8.5332°, 32.1593°, which is 12 km ENE of Laela, Tanzania.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000fute). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, October 15, 2021). M4.7 Earthquake 12 km ENE of Laela, TanzaniaOctober 15, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fute/