Strong mag. 6.2 earthquake - Tonga Islands (Samoa) on Saturday, 18 July 2020 - information

Forte terremoto magnitudine 6.2 - 238 km southwest da Apia, Tuamasaga, Samoa, sabato, 18 luglio 2020

- Forte terremoto magnitudine 6.2 - 238 km southwest da Apia, Tuamasaga, Samoa, sabato, 18 luglio 2020

Strong magnitude 6.2 earthquake at 34 km depth

18 Jul 15:42 UTC: Primo a segnalare: GFZ dopo 9 minuti.
Jul 18 15:44: Magnitudine ricalcolata da 5.8 a 5.9.
Jul 18 15:46: Magnitudine ricalcolata da 5.9 a 6.0.
Jul 18 15:53: Magnitudine ricalcolata da 6.0 a 6.1.
Profondità ricalcolata da 10.0 a 34.0 km.
Jul 18 16:44: Magnitudine ricalcolata da 6.1 a 6.2.
Data & ora: 18 Jul 2020 03:32:42 UTC -
Magnitudine: 6.2
Profondità: 34.0 km
Epicentro latitudine / longitudine: 15,54°S / 173,1°W (Samoa)
Vulcano più vicino: Curacoa (81 km / 50 mi)
Nearby towns and cities:
88 km ENE da Hihifo (Tonga) (pop: 815)
216 km SSW da Vailoa (pop: 769)
222 km SSW da Mulifanua (pop: 4,510)
230 km SSW da Asau (pop: 6,640)
236 km SW da Afega (Malie) (pop: 1,900)
238 km SW da Apia (pop: 40,400)
244 km SSW da Safotu (pop: 1,210)
246 km SW da Lufilufi (pop: 1,070)
Fonte dati primaria: GFZ
Stima dell'energia sismica liberata: 1,3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1,9 atomic bombs!) More info
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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.
MagnitudineProfonditàUbicazioneFonte
M 6.234 kmTonga Islands (Samoa)GFZ
M 6.210 kmTonga (Samoa)EMSC
M 6.114 km144 km ENE of Hihifo, Tonga (Samoa)USGS
M 6.158 kmTonga Islands (Samoa)GeoAu
M 6.320 kmTonga [Sea] (Samoa)INGV
M 5.6171 kmTonga Islands (Samoa)BMKG

User reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Send your own user report!
8361.8 km NE of epicenter [Map] / not felt
Barstow / Violent shaking (MMI IX)
Apia, Samoa / Weak shaking (MMI III) : I felt it. To me it wasn't strong
Viti / Violent shaking (MMI IX) : Many many suffering
Salt lake city, 84104 / Very weak shaking (MMI II)
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Aftershocks of the 6.2 quake 238 km southwest of Apia, Tuamasaga, Samoa, 18 July 15:32 UTC

More info
Recorded aftershocks, latest first (13 quakes):
  • 16 Nov 2020 07:51 UTC
    | M 4.6 |
    110.3 km (68.5 mi) depth
    |
    70 km (44 mi) distance
    | USGS | Details
  • 25 Oct 2020 11:47 UTC
    | M 5.9 |
    42 km (26.1 mi) depth
    |
    60 km (38 mi) distance
    | GFZ | Details
  • 18 Oct 2020 02:33 UTC
    | M 4.6 |
    63.5 km (39.5 mi) depth
    |
    71 km (44 mi) distance
    | USGS | Details
  • 14 Sep 2020 19:53 UTC
    | M 4.7 |
    10 km (6.2 mi) depth
    |
    41 km (25 mi) distance
    | USGS | Details
  • 08 Sep 2020 08:28 UTC
    | M 5.4 |
    10 km (6.2 mi) depth
    |
    50 km (31 mi) distance
    | GFZ | Details
  • 30 Aug 2020 10:52 UTC
    | M 4.7 |
    10 km (6.2 mi) depth
    |
    64 km (40 mi) distance
    | USGS | Details
  • 25 Aug 2020 00:08 UTC
    | M 4.5 |
    10 km (6.2 mi) depth
    |
    72 km (45 mi) distance
    | USGS | Details
  • 15 Aug 2020 04:58 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 15 Aug 2020 04:58 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    43 km (27 mi) distance
    | USGS | Details
  • 14 Aug 2020 11:50 UTC
    | M 5.0 |
    104.4 km (64.9 mi) depth
    |
    29 km (18 mi) distance
    | GeoAu | Details
  • 01 Aug 2020 08:37 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    44 km (27 mi) distance
    | USGS | Details
  • 22 Jul 2020 17:50 UTC
    | M 4.6 |
    9.2 km (5.7 mi) depth
    |
    49 km (31 mi) distance
    | USGS | Details
  • 21 Jul 2020 14:43 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    70 km (44 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.2 earthquake - 238 km southwest of Apia, Tuamasaga, Samoa, on Saturday, 18 July 2020 at 15:32 (GMT)
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