M4.5 earthquake 187 km NW of Neiafu, Tonga
A magnitude 4.5 earthquake struck 187 km NW of Neiafu, Tonga on Wed, Jul 21, 2021, 3:58 PM GMT-12 (03:58 UTC), 261 km (162 mi) below the surface.
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
- 2021-07-22 03:58:29 UTC
- Depth
- 261.5 km (162.5 mi), intermediate-depth
- Epicenter
- 17.300° S, 175.047° 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 15.3 km horizontally, 9.3 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 136°
- Stations used
- 27
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.3185 km SW of Hihifo, Tonga · 1886 days ago · 245 km deep · 15 km away
- 4.5122 km N of Neiafu, Tonga · 1880 days ago · 104 km deep · 95 km away
- 4.3138 km SSW of Hihifo, Tonga · 1868 days ago · 110 km deep · 88 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ezrs. Read Wed, Sep 30, 2026, 11:31 AM UTC.