Forte terremoto magnitudine 6.2 - Tonga, sabato, 24 febbraio 1990

Forte terremoto magnitudine 6.2 - Tonga, sabato, 24 febbraio 1990

Strong magnitude 6.2 earthquake at 33 km depth

Data & ora: 24 Feb 1990 19:13:14 UTC
Magnitudine: 6.2
Profondità: 33.0 km
Epicentro latitudine / longitudine: 15.523°S / 175.236°W (Tonga)
Vulcano più vicino: Niuafo'ou (43 km / 27 mi)
Nearby towns and cities:
161 km ONO da Hihifo (pop: 815) --> Vedi sismi vicini
269 km SSE da Mata-Utu (Hahake, Wallis e Futuna) (pop: 1,200) --> Vedi sismi vicini
358 km SO da Asau (Samoa) (pop: 6,640) --> Vedi sismi vicini
372 km NNO da Neiafu (pop: 4,320) --> Vedi sismi vicini
382 km SO da Safotu (Samoa) (pop: 1,210) --> Vedi sismi vicini
392 km OSO da Mulifanua (Samoa) (pop: 4,510) --> Vedi sismi vicini
402 km OSO da Fasito‘outa (Samoa) (pop: 2,100) --> Vedi sismi vicini
418 km OSO da Apia (Samoa) (pop: 40,400) --> Vedi sismi vicini
432 km OSO da Lufilufi (Samoa) (pop: 1,070) --> Vedi sismi vicini
625 km N da Nuku'alofa (pop: 22,400) --> Vedi sismi vicini
Fonte dati primaria: USGS (United States Geological Survey)
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.
M 6.233 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.
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Aftershocks of the 6.2 quake Tonga 24 February 1990 19:13 GMT

More info
Recorded aftershocks, latest first (3 quakes):
  • 13 Aug 1990 13:30 UTC
    | M 5.2 |
    33 km (20.5 mi) depth
    73 km (46 mi) distance
    | USGS | Details
  • 25 Jul 1990 13:37 UTC
    | M 5.1 |
    280.4 km (174.2 mi) depth
    56 km (35 mi) distance
    | USGS | Details
  • 08 Mar 1990 01:06 UTC
    | M 4.9 |
    309.4 km (192.3 mi) depth
    36 km (23 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.2 earthquake - Tonga on Saturday, 24 February 1990 at 19:13 (GMT)
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