M4.8 earthquake 37 km SW of Montecristi, Ecuador
A magnitude 4.8 earthquake struck 37 km SW of Montecristi, Ecuador on Sun, May 8, 1977, 11:48 PM GMT-5 (04:48 UTC), 41 km (25 mi) below the surface.
A larger quake followed: M5.1 48 km NW of Salinas, Ecuador. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1977-05-09 04:48:46 UTC
- Depth
- 41.0 km (25.5 mi), shallow
- Epicenter
- 1.254° S, 80.924° 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.
- Stations used
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.937 km WSW of Manta, Ecuador · 18041 days ago · 52 km deep · 16 km away
- 4.729 km WSW of Montecristi, Ecuador · 18037 days ago · 33 km deep · 8 km away
- 4.739 km WSW of Jipijapa, Ecuador · 18030 days ago · 33 km deep · 27 km away
- 5.045 km SW of Jipijapa, Ecuador · 18030 days ago · 48 km deep · 38 km away
- 4.351 km WSW of Jipijapa, Ecuador · 18030 days ago · 37 km deep · 38 km away
- 4.432 km WSW of Jipijapa, Ecuador · 18029 days ago · 65 km deep · 28 km away
- 5.148 km NW of Salinas, Ecuador · 18026 days ago · 10 km deep · 73 km away
Before
Earthquakes todayEcuador earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000ntg. Read Thu, Oct 1, 2026, 8:01 PM UTC.