1918 Celebes Sea earthquake

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1918 Celebes Sea earthquake
1918 Celebes Sea earthquake is located in Mindanao
Cotabato Trench
Cotabato Trench
1918 Celebes Sea earthquake is located in Philippines
1918 Celebes Sea earthquake
UTC time1918-08-15 12:18:21
ISC event913230
Local dateAugust 15, 1918 (1918-08-15)
Local time20:18
Magnitude8.3 Mw[1]
Depth20 km (12 mi)[1]
Epicenter5°58′01″N 124°22′37″E / 5.967°N 124.377°E / 5.967; 124.377Coordinates: 5°58′01″N 124°22′37″E / 5.967°N 124.377°E / 5.967; 124.377[1]
Max. intensityX (Extreme)
The Cotabato Trench in southern Mindanao and the Philippine Mobile Belt.
Earthquakes in Mindanao
Near the Cotabato Trench, two of the largest 20th century Philippine earthquakes: the 1918 Celebes Sea earthquake (8.3 Mw) and the 1976 Moro Gulf earthquake (8.0 Mw). Also included is the recent 2002 Mindanao earthquake (7.5 Mw). The Moro Gulf, part of the Celebes Sea, is labeled for context.

The 1918 Celebes Sea earthquake occurred on 15 August at 12:18 UTC.[2] It had a magnitude of 8.3 on the moment magnitude scale[3] and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale.

This event in the southern Philippines triggered a large tsunami, with a maximum run-up of 7.2 m,[4] which affected the coasts of the Celebes Sea, causing widespread damage. The combined effects of the earthquake and the tsunami caused 52 casualties. This is considered as one of the most destructive earthquake in the country.[citation needed]

See also[edit]


  1. ^ a b c "M 8.3 - Mindanao, Philippines". United States Geological Survey. August 15, 1918. Retrieved August 27, 2017.
  2. ^ "Comments for the Significant Earthquake". Significant Earthquake Database. National Geophysical Data Center. Retrieved 27 June 2015.
  3. ^ ISC (27 June 2015), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 2.0, International Seismological Centre
  4. ^ "Comments for the Tsunami Event". NGDC/WDS Tsunami Event Database. National Geophysical Data Center. Retrieved 27 June 2015.

External links[edit]