4.7

M4.7 Earthquake 14 km WNW of Machachi, Ecuador — October 27, 2020

2020-10-27 11:59:18 UTC (2020-10-27) · approx. 6:59 AM UTC-5 local

Felt by 6 people across nearby locations.

MagnitudeM4.7(mb)
Time11:59 UTC≈ 6:59 AM UTC-5
Depth7.7 kmshallow crustal
Coordinates-0.479°, -78.693°
Felt by6DYFI responses
Status✓ Reviewed by USGS

On October 27, 2020 at 11:59 UTC, a magnitude 4.7 shallow crustal earthquake struck 14 km WNW of Machachi, Ecuador, at a depth of 7.7 km and coordinates -0.4788°, -78.6928°.

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 -0.48°, -78.69°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 6 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 14 km WNW of Machachi, Ecuador

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

Earthquake Details

Magnitude
4.7 mb
Depth
7.7 km
shallow crustal
Location
-0.4788°N
-78.6928°E
Felt Reports
6
DYFI responses
Community Intensity
3.1
CDI from reports

Technical Information

Event ID
us6000cdq4
Event Type
earthquake
Status
✓ Reviewed
Significance
342
Azimuthal Gap
146.0°
Min Station Distance
0.317°
RMS Residual
1.04 sec
Last Updated
2021-01-09 20:05:30 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Machachi, Ecuador?

The magnitude 4.7 earthquake that struck 14 km WNW of Machachi, Ecuador on October 27, 2020 at 11:59 UTC had a depth of 7.7 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -0.4788°, -78.6928°, which is 14 km WNW of Machachi, Ecuador.

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: us6000cdq4). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, October 27, 2020). M4.7 Earthquake 14 km WNW of Machachi, Ecuador — October 27, 2020. Retrieved January 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000cdq4/