M4.5 earthquake 50 km SW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 50 km SW of Hihifo, Tonga on Sun, Aug 2, 2020, 10:31 AM GMT+13 (21:31 UTC), 116 km (72 mi) below the surface.
A larger quake followed: M4.8 31 km NNE 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
- 4.5 (mb), light
- Local time
- UTC
- 2020-08-01 21:31:47 UTC
- Depth
- 116.3 km (72.3 mi), intermediate-depth
- Epicenter
- 16.211° S, 174.181° 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 9.3 km horizontally, 7.1 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 69°
- Stations used
- 39
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.678 km SSW of Hihifo, Tonga · 2243 days ago · 81 km deep · 48 km away
- 4.5Tonga · 2241 days ago · 104 km deep · 95 km away
- 4.831 km NNE of Hihifo, Tonga · 2239 days ago · 38 km deep · 78 km away · felt by 1
- 4.546 km SSW of Hihifo, Tonga · 2218 days ago · 59 km deep · 23 km away
- 4.462 km SSW of Hihifo, Tonga · 2200 days ago · 77 km deep · 29 km away
- 4.4138 km SW of Hihifo, Tonga · 2197 days ago · 213 km deep · 92 km away
Before
- 4.2107 km WNW of Hihifo, Tonga · 2255 days ago · 277 km deep · 91 km away
- 4.3112 km SSW of Hihifo, Tonga · 2255 days ago · 135 km deep · 85 km away
- 4.424 km ESE of Hihifo, Tonga · 2262 days ago · 115 km deep · 66 km away
- 4.556 km N of Hihifo, Tonga · 2275 days ago · 121 km deep · 93 km away
- 4.810 km NW of Hihifo, Tonga · 2278 days ago · 108 km deep · 51 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ba4r. Read Wed, Sep 30, 2026, 11:54 PM UTC.