M5.0 earthquake 129 km N of Caluula, Somalia
A magnitude 5.0 earthquake struck 129 km N of Caluula, Somalia on Sun, Dec 18, 1977, 2:57 AM GMT+3 (23:57 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.3 134 km N of Caluula, Somalia. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1977-12-17 23:57:54 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 13.125° N, 50.943° E
- Region
- Somalia
- 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
- 61
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.9154 km NNE of Caluula, Somalia · 17768 days ago · 33 km deep · 33 km away
- 5.3134 km N of Caluula, Somalia · 17755 days ago · 33 km deep · 4 km away
Before
Earthquakes todaySomalia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000s4e (also filed as gcmtb121777d, gcmt19771217235754, iscgem689227). Read Tue, Sep 22, 2026, 7:26 AM UTC.