Tonga earthquakes

M4.5 earthquake 141 km SSW of Hihifo, Tonga

A magnitude 4.5 earthquake struck 141 km SSW of Hihifo, Tonga on Sun, Aug 2, 2020, 6:43 PM GMT-12 (06:43 UTC), 151 km (94 mi) below the surface.

A larger quake followed: M4.6 78 km SSW of Hihifo, Tonga. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
2020-08-03 06:43:48 UTC
Depth
150.5 km (93.5 mi), intermediate-depth
Epicenter
17.119° S, 174.355° 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 9.7 km horizontally, 5.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
97°
Stations used
32

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.678 km SSW of Hihifo, Tonga · 2243 days ago · 81 km deep · 64 km away
  2. 4.6153 km NNE of Neiafu, Tonga · 2225 days ago · 10 km deep · 93 km away
  3. 4.546 km SSW of Hihifo, Tonga · 2218 days ago · 59 km deep · 96 km away
  4. 4.5145 km N of Neiafu, Tonga · 2215 days ago · 74 km deep · 45 km away
  5. 4.4143 km SSW of Hihifo, Tonga · 2205 days ago · 131 km deep · 9 km away
  6. 4.462 km SSW of Hihifo, Tonga · 2200 days ago · 77 km deep · 80 km away
  7. 4.4138 km SW of Hihifo, Tonga · 2197 days ago · 213 km deep · 35 km away

Before

  1. 5.2148 km N of Neiafu, Tonga · 2250 days ago · 92 km deep · 26 km away
  2. 4.3112 km SSW of Hihifo, Tonga · 2255 days ago · 135 km deep · 42 km away
  3. 4.3180 km NW of Neiafu, Tonga · 2264 days ago · 262 km deep · 73 km away
  4. 4.3158 km NW of Neiafu, Tonga · 2267 days ago · 233 km deep · 93 km away
  5. 5.1144 km S of Hihifo, Tonga · 2273 days ago · 10 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000b8ly. Read Wed, Sep 30, 2026, 11:48 PM UTC.