M4.9 earthquake 133 km ESE of Neiafu, Tonga
A magnitude 4.9 earthquake struck 133 km ESE of Neiafu, Tonga on Sat, Oct 17, 2020, 6:19 PM GMT+13 (05:19 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.9 189 km ESE of Neiafu, 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), light
- Local time
- UTC
- 2020-10-17 05:19:04 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 19.053° S, 172.793° 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 8.9 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 128°
- Stations used
- 25
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.9189 km ESE of Neiafu, Tonga · 2169 days ago · 10 km deep · 57 km away
- 4.3188 km ESE of Neiafu, Tonga · 2169 days ago · 10 km deep · 56 km away
- 4.391 km ESE of Neiafu, Tonga · 2159 days ago · 10 km deep · 45 km away
- 4.478 km ESE of Neiafu, Tonga · 2140 days ago · 10 km deep · 56 km away
- 5.4125 km E of Neiafu, Tonga · 2124 days ago · 10 km deep · 20 km away
- 5.2111 km ESE of Neiafu, Tonga · 2123 days ago · 10 km deep · 22 km away
- 4.6122 km E of Neiafu, Tonga · 2118 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 us6000c8x9. Read Tue, Sep 29, 2026, 10:46 AM UTC.