M4.2 earthquake 107 km WNW of Hihifo, Tonga
A magnitude 4.2 earthquake struck 107 km WNW of Hihifo, Tonga on Wed, Jul 29, 2020, 9:52 AM GMT+13 (20:52 UTC), 277 km (172 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
- 4.2 (mb), light
- Local time
- UTC
- 2020-07-28 20:52:17 UTC
- Depth
- 276.6 km (171.9 mi), intermediate-depth
- Epicenter
- 15.574° S, 174.722° 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 9.9 km horizontally, 4.5 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 54°
- Stations used
- 57
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.550 km SW of Hihifo, Tonga · 2251 days ago · 116 km deep · 91 km away
- 4.5142 km NNW of Hihifo, Tonga · 2247 days ago · 268 km deep · 81 km away
- 4.5Tonga · 2241 days ago · 104 km deep · 89 km away
- 4.5108 km NW of Hihifo, Tonga · 2228 days ago · 10 km deep · 61 km away
- 5.679 km NNW of Hihifo, Tonga · 2228 days ago · 10 km deep · 75 km away
Before
- 4.8124 km NW of Hihifo, Tonga · 2263 days ago · 10 km deep · 44 km away
- 4.8165 km WNW of Hihifo, Tonga · 2263 days ago · 10 km deep · 58 km away
- 4.6134 km NW of Hihifo, Tonga · 2264 days ago · 10 km deep · 63 km away
- 4.9116 km NW of Hihifo, Tonga · 2264 days ago · 10 km deep · 52 km away
- 4.556 km N of Hihifo, Tonga · 2275 days ago · 121 km deep · 97 km away
- 4.810 km NW of Hihifo, Tonga · 2278 days ago · 108 km deep · 99 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000b8sh. Read Wed, Sep 30, 2026, 11:15 PM UTC.