M4.6 earthquake 27 km WNW of Macas, Ecuador
A magnitude 4.6 earthquake struck 27 km WNW of Macas, Ecuador on Fri, Feb 23, 1973, 6:10 PM GMT-5 (23:10 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.9 27 km NNW of Macas, Ecuador. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1973-02-23 23:10:51 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 2.255° S, 78.349° W
- Region
- Ecuador
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 27
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayEcuador earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00000p6. Read Tue, Sep 22, 2026, 3:30 PM UTC.