M4.9 earthquake 183 km SSE of ‘Ohonua, Tonga
A magnitude 4.9 earthquake struck 183 km SSE of ‘Ohonua, Tonga on Mon, Mar 5, 2018, 2:45 AM GMT+13 (13:45 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
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-03-04 13:45:05 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 22.958° S, 174.601° 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 6.5 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 116°
- Stations used
- 45
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6167 km SSE of ‘Ohonua, Tonga · 3121 days ago · 10 km deep · 19 km away
- 4.8200 km SSW of ‘Ohonua, Tonga · 3120 days ago · 10 km deep · 85 km away
- 5.2175 km S of ‘Ohonua, Tonga · 3114 days ago · 13 km deep · 34 km away
- 5.3150 km SSE of ‘Ohonua, Tonga · 3088 days ago · 10 km deep · 34 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000dc1w. Read Fri, Oct 2, 2026, 1:30 PM UTC.