Tonga earthquakes

M4.7 earthquake 197 km SSW of ‘Ohonua, Tonga

A magnitude 4.7 earthquake struck 197 km SSW of ‘Ohonua, Tonga on Thu, Jun 30, 1977, 3:44 PM GMT+13 (02:44 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 125 km S of ‘Ohonua, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1977-06-30 02:44:23 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
22.883° S, 175.891° 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.

Depth from
OPERATOR_ASSIGNED
Stations used
13

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 5.5125 km S of ‘Ohonua, Tonga · 17972 days ago · 33 km deep · 94 km away
  2. 5.1215 km SSW of ‘Ohonua, Tonga · 17971 days ago · 42 km deep · 43 km away
  3. 5.0214 km S of ‘Ohonua, Tonga · 17968 days ago · 63 km deep · 72 km away
  4. 4.5161 km SSW of ‘Ohonua, Tonga · 17951 days ago · 123 km deep · 52 km away
  5. 4.8234 km SW of ‘Ohonua, Tonga · 17947 days ago · 115 km deep · 45 km away
  6. 5.1141 km SW of Vaini, Tonga · 17945 days ago · 122 km deep · 74 km away
  7. 5.0186 km S of ‘Ohonua, Tonga · 17943 days ago · 33 km deep · 91 km away
  8. 4.5144 km SW of Vaini, Tonga · 17939 days ago · 170 km deep · 83 km away
  9. 4.9160 km SW of ‘Ohonua, Tonga · 17938 days ago · 33 km deep · 43 km away
  10. 5.3224 km SSW of ‘Ohonua, Tonga · 17936 days ago · 33 km deep · 72 km away

Before

  1. 4.9142 km SSW of ‘Ohonua, Tonga · 17982 days ago · 33 km deep · 66 km away
  2. 4.7236 km S of ‘Ohonua, Tonga · 17982 days ago · 33 km deep · 89 km away
  3. 5.2204 km S of ‘Ohonua, Tonga · 17983 days ago · 38 km deep · 77 km away
  4. 4.8244 km S of ‘Ohonua, Tonga · 17984 days ago · 33 km deep · 88 km away
  5. 4.7243 km S of ‘Ohonua, Tonga · 17984 days ago · 47 km deep · 92 km away
  6. 5.0137 km SSW of Vaini, Tonga · 17985 days ago · 33 km deep · 68 km away
  7. 5.4160 km SSW of ‘Ohonua, Tonga · 17986 days ago · 51 km deep · 48 km away
  8. 4.7146 km SSW of ‘Ohonua, Tonga · 17986 days ago · 33 km deep · 52 km away
  9. 5.5200 km SSW of ‘Ohonua, Tonga · 17988 days ago · 33 km deep · 6 km away
  10. 4.8200 km SW of ‘Ohonua, Tonga · 17988 days ago · 98 km deep · 18 km away
  11. 4.5190 km SSW of Vaini, Tonga · 17988 days ago · 138 km deep · 31 km away
  12. 4.6140 km SSW of Vaini, Tonga · 17988 days ago · 128 km deep · 68 km away
  13. 6.8Tonga region · 17989 days ago · 65 km deep · 1 km away
  14. 4.7231 km SW of ‘Ohonua, Tonga · 17999 days ago · 123 km deep · 39 km away

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000pj4. Read Tue, Sep 22, 2026, 8:43 PM UTC.