M4.7 earthquake 96 km E of ‘Ohonua, Tonga
A magnitude 4.7 earthquake struck 96 km E of ‘Ohonua, Tonga on Mon, May 21, 2018, 10:50 AM GMT+13 (21:50 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M5.2 66 km ESE of ‘Ohonua, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-05-20 21:50:14 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 21.335° S, 174.016° W
- Region
- Tonga
- 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.
- Location uncertainty
- About 10.1 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- Operator assigned
- Station coverage gap
- 88°
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.6125 km E of ‘Ohonua, Tonga · 3047 days ago · 10 km deep · 31 km away
- 4.9104 km SSE of Pangai, Tonga · 3010 days ago · 10 km deep · 83 km away
- 5.266 km ESE of ‘Ohonua, Tonga · 3004 days ago · 10 km deep · 36 km away
Before
- 5.0118 km ENE of ‘Ohonua, Tonga · 3058 days ago · 10 km deep · 42 km away
- 5.6104 km ENE of ‘Ohonua, Tonga · 3058 days ago · 10 km deep · 30 km away
- 5.5121 km E of ‘Ohonua, Tonga · 3065 days ago · 10 km deep · 30 km away
- 5.0120 km ENE of ‘Ohonua, Tonga · 3071 days ago · 10 km deep · 56 km away
- 4.3101 km E of ‘Ohonua, Tonga · 3072 days ago · 10 km deep · 9 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000eb3x. Read Sat, Oct 3, 2026, 10:12 AM UTC.