M 6.4 - TONGA - 2008-10-22 12:55 UTC

Why is your contribution important?

Your observations can help improve earthquake response and also contribute to scientific knowledge. Observations (including questionnaires, pictures, etc.) can provide valuable in-situ constraints on earthquake effects and, in the long term, improve the performance of our models of earthquake impact.

Magnitude Mw 6.4 Region TONGA Date time 2008-10-22 12:55:57.6 UTC Location 18.38 S ; 175.38 W Depth 232 km Distances 654 km E Suva (pop 199,455 ; local time 00:55 2008-10-23) 307 km NW Nuku'alofa (pop 23,611 ; local time 01:55 2008-10-23) 149 km W Neiafu (pop 4,320 ; local time 01:55 2008-10-23)

Source parameters reviewed by a seismologist

More information at:  USGS/NEIC Denver, USA

Earthquake View	Google Maps View	Intensity Map	Contribution Map
Seismicity	Regional Moment tensors	Quick MT solutions	PGA/PGV/Population

Global view	Regional view	Local view

References for tectonic plate boundaries:
Bird, P. (2003) An updated digital model of plate boundaries,
Geochemistry Geophysics Geosystems, 4(3), 1027.

Maps view: Seismicity from the previous 7 days in the area .

 Regional instrumental seismicity

This seismicity maps have been generated by concatenating the ISC catalogue (since 1964), the EMSC Euro-Med Bulletin catalogue and the EMSC Real Time catalogue. Therefore, they show the seismicity from 1964 until the earthquake occurrence.

Intensity map created with the results of the macroseismic questionnaires (click the map to enlarge).If you have experienced this event, please report it by filling our online questionnaire.

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