Very strong mag. 6.1 earthquake - South Pacific Ocean, 199 km south of Apia, Tuamasaga, Samoa, on Thursday, 19 March 1964 at 21:44 (GMT)

Very strong mag. 6.1 earthquake - South Pacific Ocean, 199 km south of Apia, Tuamasaga, Samoa, on Thursday, 19 March 1964 at 21:44 (GMT)

Tremblement de terre très fort magnitude 6.1 at 12 km depth

Date & time: 19 Mar 1964 21:44:03 UTC
Magnitude: 6.1
Profondeur: 11.7 km
Epicenter latitude / longitude: 15.595°S / 172.094°W (South Pacific Ocean, Samoa)
Volcan le plus près: Curacoa (169 km / 105 mi)
Nearby towns and cities:
194 km SSO de Samamea (pop: 89) --> Voir les séismes à proximité!
196 km S de Mulifanua (pop: 4,510) --> Voir les séismes à proximité!
199 km S de Fasito‘outa (pop: 2,100) --> Voir les séismes à proximité!
199 km S de Apia (pop: 40,400) --> Voir les séismes à proximité!
203 km SO de Tāfuna (Tualauta, Samoa américaines) (pop: 11,000) --> Voir les séismes à proximité!
209 km SO de Pago Pago (Ma'Oputasi, Samoa américaines) (pop: 11,500) --> Voir les séismes à proximité!
238 km SSE de Asau (pop: 6,640) --> Voir les séismes à proximité!
241 km S de Safotu (pop: 1,210) --> Voir les séismes à proximité!
449 km NNO de Alofi (Niue) (pop: 624) --> Voir les séismes à proximité!
509 km ESE de Mata-Utu (Hahake, Wallis-et-Futuna) (pop: 1,200) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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.
MagnitudeProfondeurLocationSource
M 6.112 kmSamoa Islands 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 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

More info
Recorded aftershocks, latest first (1 quakes):
  • 22 Jun 1964 00:16 UTC
    | M 5.8 |
    15 km (9.3 mi) depth
    |
    66 km (41 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Very strong mag. 6.1 earthquake - South Pacific Ocean, 199 km south of Apia, Tuamasaga, Samoa, on Thursday, 19 March 1964 at 21:44 (GMT)
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