M4.8 earthquake 200 km SSW of ‘Ohonua, Tonga
A magnitude 4.8 earthquake struck 200 km SSW of ‘Ohonua, Tonga on Mon, Mar 19, 2018, 11:36 AM GMT+13 (22:36 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.3 150 km SSE 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
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-03-18 22:36:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 23.086° S, 175.423° 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 15.0 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- Operator assigned
- Station coverage gap
- 132°
- Stations used
- 100
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 3 in the 30 days before it.
After
- 4.9269 km SSW of ‘Ohonua, Tonga · 3115 days ago · 35 km deep · 70 km away
- 5.2175 km S of ‘Ohonua, Tonga · 3113 days ago · 13 km deep · 54 km away
- 4.6284 km S of ‘Ohonua, Tonga · 3113 days ago · 10 km deep · 92 km away
- 5.2265 km S of ‘Ohonua, Tonga · 3092 days ago · 10 km deep · 73 km away
- 5.3150 km SSE of ‘Ohonua, Tonga · 3088 days ago · 10 km deep · 99 km away
- 4.6178 km SSW of ‘Ohonua, Tonga · 3078 days ago · 10 km deep · 57 km away
- 5.0242 km S of ‘Ohonua, Tonga · 3073 days ago · 10 km deep · 56 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000d69b. Read Fri, Oct 2, 2026, 11:41 AM UTC.