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Major mag. 7.0 earthquake - Tonga Region on Saturday, 17 June 1978

Major mag. 7.0 earthquake  - Tonga Region on Saturday, 17 June 1978
Date & time: Saturday, 17 June 1978 15:11 UTC
Magnitude: 7.0
Depth: 33.0 km
Epicenter latitude / longitude: 17.098°S / 172.264°W (Tonga)
Nearest volcano: Tafahi (208 km / 129 mi)
Primary data source: USGS
Estimated released energy: 2 x 1015 joules (554 gigawatt hours, equivalent to 4.8 x 105 tons of TNT or 29.8 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
TimeMag. / DepthLocationSource
Sat, 17 Jun 15:11 UTCM 7.0 / 33 kmTonga RegionUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.

Aftershocks of the 7.0 quake: Tonga Region, 17 Jun 1978 15h11

Show info about this
List of recorded aftershocks, latest first (46 quakes):
  • 11 Apr 1980 00:50 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    87 km (54 mi) distance
    | USGS | Details
  • 21 Mar 1980 16:32 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    64 km (40 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 03 Feb 1980 11:58 UTC
    | M 6.4 |
    33 km (20.5 mi) depth
    |
    130 km (81 mi) distance
    | USGS | Strong mag. 6.4 earthquake - Tonga Region (Niue) on Sunday, 3 February 1980
  • 27 Dec 1979 11:03 UTC
    | M 5.3 |
    33 km (20.5 mi) depth
    |
    136 km (85 mi) distance
    | USGS | Details
  • 19 Nov 1979 07:40 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    119 km (74 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 18 Nov 1979 21:39 UTC
    | M 4.5 |
    33 km (20.5 mi) depth
    |
    119 km (74 mi) distance
    | USGS | Details
  • 18 Nov 1979 21:37 UTC
    | M 4.0 |
    33 km (20.5 mi) depth
    |
    122 km (76 mi) distance
    | USGS | Details
  • 04 Nov 1979 14:27 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    110 km (68 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    17939 km (11147 mi) distance
    | | Details
  • 26 Oct 1979 04:40 UTC
    | M 5.1 |
    22 km (13.7 mi) depth
    |
    115 km (72 mi) distance
    | USGS | Details
  • 18 Oct 1979 05:57 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    97 km (60 mi) distance
    | USGS | Details
  • Show all

Map of aftershocks

Significant earthquakes in the same area since 1900

Major mag. 7.0 earthquake - Tonga Region on Saturday, 17 June 1978

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