- Start
- Dec 26, 200490% CONFIDENCEfrom the source
The Indian Ocean Tsunami Kills Across Fourteen Countries
- The Mw 9.2-9.3 undersea megathrust earthquake struck at 07:58:53 local time on 26 December 2004, with its epicentre off the west coast of Aceh in northern Sumatra. [S]
- It was caused by a rupture along the fault boundary between the Burma plate and the Indian plate and reached a maximum Mercalli intensity in the extreme range. [S]
- The USGS catalogue lists it at magnitude 9.1 with an epicentre at 3.295N, 95.982E and a depth of 30 km. [2]
- The USGS ranks it among the largest earthquakes instrumentally recorded anywhere since 1900. [1]
References 393% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake_and_tsunamien.wikipedia.org· Posted Sep 21, 2026· Starts Dec 26, 2004 ✓· 33% of score
The source gives "26 December 2004, at 07:58:53 local time (UTC+7)", which is 00:58:53 UTC; the USGS[2][3] catalogue records 00:58:53.450Z for event official20041226005853450_30.
- [2]95%20 Largest Earthquakes in the World Since 1900 | U.S. Geological Surveyusgs.gov· Added Sep 21, 2026· 33% of score
The USGS's[3] own ranking of the largest recorded earthquakes, which places this event among them.
- [3]95%M 9.1 - 2004 Sumatra - Andaman Islands Earthquakeearthquake.usgs.gov· Added Sep 21, 2026· 33% of score
The USGS[2] catalogue entry for this event, the authority for its magnitude, origin time, depth and epicentre.
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