M5.1 earthquake 228 km SE of Hihifo, Tonga
A magnitude 5.1 earthquake struck 228 km SE of Hihifo, Tonga on Wed, Jul 21, 2021, 10:19 AM GMT+13 (21:19 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 2021-07-20 21:19:51 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.331° S, 172.198° 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 10.9 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 165°
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.8208 km SE of Hihifo, Tonga · 1894 days ago · 10 km deep · 29 km away
- 4.8189 km NE of Neiafu, Tonga · 1883 days ago · 10 km deep · 51 km away
- 4.7232 km SE of Hihifo, Tonga · 1856 days ago · 10 km deep · 8 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ezex. Read Wed, Sep 30, 2026, 5:31 AM UTC.