M6.5 earthquake 42 km SE of Cayambe, Ecuador
A magnitude 6.5 earthquake struck 42 km SE of Cayambe, Ecuador on Wed, May 11, 1955, 6:04 AM GMT-5 (11:04 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.5 (mw), strong
- Local time
- UTC
- 1955-05-11 11:04:04 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 0.230° S, 77.878° W
- Region
- Ecuador
- Strongest shaking
- VII, very strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VII, very strong shaking
- Peak ground acceleration
- 28.2% of gravity
- Peak ground velocity
- 3.4 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±1.03
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgemsup889513. Read Wed, Sep 30, 2026, 3:15 AM UTC.