Major mag. 7.4 earthquake - South Sandwich Islands Region on Tuesday, 11 December 2018 - information

Molto forte terremoto magnitudine 7.4 - South Atlantic Ocean, Georgia del Sud e Sandwich australi, martedì, 11 dicembre 2018

Molto forte terremoto magnitudine 7.4 - South Atlantic Ocean, Georgia del Sud e Sandwich australi, martedì, 11 dicembre 2018

Major magnitude 7.4 earthquake at 10 km depth

11 Dec 02:34 UTC: Primo a segnalare: GFZ dopo 8 minuti.
Dec 11 02:35: Magnitudine ricalcolata da 7.4 a 7.5.
Dec 11 02:38: Magnitudine ricalcolata da 7.5 a 7.4.
Data & ora: 11 Dec 2018 02:26:17 UTC
Magnitudine: 7.4
Profondità: 10.0 km
Epicentro latitudine / longitudine: 58.22°S / 26.32°W (South Atlantic Ocean, Georgia del Sud e Sandwich australi)
Vulcano più vicino: Montagu Island (22 km / 14 mi)
Nearby towns and cities:
22 km N da Montagu Island --> Vedi sismi vicini
148 km NNE da Thule Island --> Vedi sismi vicini
226 km SSE da Zavodovski Island --> Vedi sismi vicini
Fonte dati primaria: GFZ (German Research Centre for Geosciences)
Stima dell'energia sismica liberata: 7.9 x 1015 joules (2206 gigawatt hours, equivalent to 1.9 x 106 tons of TNT or 118.7 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 7.410 kmSouth Sandwich Islands RegionGFZ
M 7.1150 km SOUTH SANDWICH ISLANDS REGIONEMSC
M 7.3176 km- 61km NNE of Bristol Island, South Sandwich IslandsUSGS
M 7.1165 km- 48km N of Bristol Island, South Sandwich IslandsUSGS

User reports for this quake (13)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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13764.7 km WNW of epicenter [Map] / Very strong shaking (MMI VII)
atlanta, ga / Very weak shaking (MMI II)
san diego california / not felt
Düsseldorf / not felt
Cincinnati, OH / not felt : I didn't feel this earthquake
Sorocaba / not felt
Santa Cruz da Serra, Duque de Caxias, RJ, Brasil / not felt
Lisbon / not felt
4234.8 km WNW of epicenter [Map] / not felt : Estamos lejos.... (reported through our app)
jogjakarta / Violent shaking (MMI IX) : Sampe roboh kandang jangkrik saya
animales inquietos (4047.8 km NW of epicenter) [Map] / not felt (reported through our app)
Russia. Sankt-Peterburg.not felt. / not felt : Frim.Russia.from Sankt-Peterburg_!!! not felt_!!! Всё спокойно, тихо
Russia. Sankt-Peterburg.not felt. / not felt : From Russia, from Sankt-Peterburg.not felt_!!! Всё
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Aftershocks of the 7.4 quake South Atlantic Ocean, South Georgia & South Sandwich Islands, 11 December 2018 02:26 GMT

More info
Recorded aftershocks, latest first (154 quakes):
  • 09 Dec 2020 23:02 UTC
    | M 5.1 |
    10 km (6.2 mi) depth
    |
    203 km (126 mi) distance
    | EMSC | Details
  • 01 Dec 2020 17:39 UTC
    | M 5.0 |
    28.2 km (17.5 mi) depth
    |
    188 km (117 mi) distance
    | GeoAu | Details
  • 04 Nov 2020 01:35 UTC
    | M 5.2 |
    39.4 km (24.5 mi) depth
    |
    263 km (164 mi) distance
    | USGS | Details
  • 31 Oct 2020 21:04 UTC
    | M 5.1 |
    38 km (23.6 mi) depth
    |
    279 km (173 mi) distance
    | EMSC | Details
  • 29 Oct 2020 04:44 UTC
    | M 4.9 |
    35 km (21.7 mi) depth
    |
    65 km (40 mi) distance
    | USGS | Details
  • 24 Oct 2020 14:54 UTC
    | M 4.7 |
    34 km (21.1 mi) depth
    |
    229 km (142 mi) distance
    | USGS | Details
  • 20 Oct 2020 16:29 UTC
    | M 4.7 |
    72.1 km (44.8 mi) depth
    |
    150 km (93 mi) distance
    | USGS | Details
  • 16 Oct 2020 01:31 UTC
    | M 4.6 |
    54.5 km (33.9 mi) depth
    |
    146 km (91 mi) distance
    | USGS | Details
  • 14 Oct 2020 15:27 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    177 km (110 mi) distance
    | USGS | Details
  • 08 Oct 2020 15:48 UTC
    | M 5.2 |
    79.3 km (49.3 mi) depth
    |
    90 km (56 mi) distance
    | USGS | Details
  • 28 Sep 2020 08:46 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    |
    279 km (174 mi) distance
    | GFZ | Details
  • 25 Sep 2020 03:54 UTC
    | M 5.1 |
    100 km (62.1 mi) depth
    |
    279 km (173 mi) distance
    | EMSC | Details
  • 15 Sep 2020 14:03 UTC
    | M 4.5 |
    36.4 km (22.6 mi) depth
    |
    163 km (102 mi) distance
    | USGS | Details
  • 13 Sep 2020 20:45 UTC
    | M 4.7 |
    84.1 km (52.3 mi) depth
    |
    162 km (101 mi) distance
    | USGS | Details
  • 13 Sep 2020 01:00 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • 03 Sep 2020 22:52 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    242 km (150 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area since 1900

Major magnitude. 7.4 earthquake - South Atlantic Ocean, South Georgia & South Sandwich Islands, on Tuesday, 11 December 2018 at 02:26 (GMT)

Map of earlier quakes

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