M4.8 earthquake 220 km SSW of ‘Ohonua, Tonga
A magnitude 4.8 earthquake struck 220 km SSW of ‘Ohonua, Tonga on Fri, Dec 28, 2018, 6:41 AM GMT+13 (17:41 UTC), 46 km (28 mi) below the surface.
A larger quake followed: M4.9 Tonga region. 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), light
- Local time
- UTC
- 2018-12-27 17:41:23 UTC
- Depth
- 45.9 km (28.5 mi), shallow
- Epicenter
- 23.135° S, 175.870° 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 11.0 km horizontally, 5.8 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 111°
- Stations used
- 35
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.8184 km SW of Vaini, Tonga · 2831 days ago · 97 km deep · 75 km away
- 4.6192 km SW of Vaini, Tonga · 2828 days ago · 83 km deep · 92 km away
- 4.5140 km SSW of ‘Ohonua, Tonga · 2820 days ago · 35 km deep · 83 km away
- 4.9Tonga region · 2820 days ago · 35 km deep · 95 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000j452. Read Wed, Sep 30, 2026, 6:26 PM UTC.