M4.6 earthquake 134 km NW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 134 km NW of Hihifo, Tonga on Mon, Jul 20, 2020, 10:18 PM GMT+13 (09:18 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.6 79 km NNW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 2020-07-20 09:18:24 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.023° S, 174.605° 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 4.7 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 64°
- Stations used
- 48
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.8165 km WNW of Hihifo, Tonga · 2263 days ago · 10 km deep · 80 km away
- 4.8124 km NW of Hihifo, Tonga · 2263 days ago · 10 km deep · 18 km away
- 4.2107 km WNW of Hihifo, Tonga · 2255 days ago · 277 km deep · 63 km away
- 4.5142 km NNW of Hihifo, Tonga · 2247 days ago · 268 km deep · 19 km away
- 4.5Tonga · 2241 days ago · 104 km deep · 85 km away
- 4.5108 km NW of Hihifo, Tonga · 2228 days ago · 10 km deep · 29 km away
- 5.679 km NNW of Hihifo, Tonga · 2228 days ago · 10 km deep · 63 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000arhr (also filed as iscgem618687322). Read Wed, Sep 30, 2026, 10:22 PM UTC.