Forte terremoto magnitudine 6.0 - Tonga, venerdì, 19 ottobre 1984

Forte terremoto magnitudine 6.0 - Tonga, venerdì, 19 ottobre 1984

Strong magnitude 6.0 earthquake at 121 km depth

Data & ora: 19 Oct 1984 14:37:50 UTC
Magnitudine: 6
Profondità: 121.1 km
Epicentro latitudine / longitudine: 15.888°S / 173.95°W (Tonga)
Vulcano più vicino: Tafahi (25 km / 16 mi)
Nearby towns and cities:
18 km ONO da Hihifo (pop: 815) --> Vedi sismi vicini
299 km SSO da Asau (Samoa) (pop: 6,640) --> Vedi sismi vicini
307 km N da Neiafu (pop: 4,320) --> Vedi sismi vicini
308 km SO da Mulifanua (Samoa) (pop: 4,510) --> Vedi sismi vicini
316 km SO da Fasito‘outa (Samoa) (pop: 2,100) --> Vedi sismi vicini
328 km SO da Apia (Samoa) (pop: 40,400) --> Vedi sismi vicini
387 km OSO da Tāfuna (Tualauta, Samoa americane) (pop: 11,000) --> Vedi sismi vicini
392 km OSO da Pago Pago (Ma'Oputasi, Samoa americane) (pop: 11,500) --> Vedi sismi vicini
439 km N da Pangai (pop: 1,740) --> Vedi sismi vicini
599 km NNE da Nuku'alofa (pop: 22,400) --> Vedi sismi vicini
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 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 6.0121 kmTongaUSGS
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 Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks of the 6.0 quake Tonga 19 October 1984 14:37 GMT

More info
Recorded aftershocks, latest first (2 quakes):
  • 19 Feb 1985 15:49 UTC
    | M 4.3 |
    33 km (20.5 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 30 Oct 1984 08:47 UTC
    | M 4.6 |
    121.7 km (75.6 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Strong mag. 6.0 earthquake - Tonga on Friday, 19 October 1984 at 14:37 (GMT)
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