1816 Guatemala earthquake

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1816 Guatemala earthquake
1816 Guatemala earthquake is located in Guatemala
1816 Guatemala earthquake
Guatemala City
Guatemala City
Quetzaltenango
Quetzaltenango
San Marcos
San Marcos
UTC time 1816-07-22 15:30
Local date July 22, 1816 (1816-07-22)
Local time 09:30
Magnitude ~7.5 Mw (est.)
Depth 30.0 km (18.6 mi)
Epicenter 15°30′N 91°30′W / 15.5°N 91.5°W / 15.5; -91.5Coordinates: 15°30′N 91°30′W / 15.5°N 91.5°W / 15.5; -91.5
Areas affected Guatemala
Max. intensity IX (Violent)
Casualties 23 killed

The 1816 Guatemala earthquake occurred at 15:30 UTC on 22 July, it had an estimated magnitude of 7.5 to 7.75 on the Mw and a maximum perceived intensity of IX (Violent) on the Mercalli intensity scale. It was caused by movement on the Chixoy-Polochic Fault, the area affected by shaking up to intensity VII (Very strong) was at least 13,000 km2. At least 23 deaths were reported,[1] the discovery of this earthquake 175 years after it occurred was based on study of historical documents, and is notable for showing that this portion of Guatemala, previously believed by many planners to be of low seismic risk, has experienced, and is at further risk of, very large earthquakes.

See also[edit]

References[edit]

  1. ^ White, RA (1985). "The Guatemala earthquake of 1816 on the Chixoy-Polochic fault" (PDF). Bulletin of the Seismological Society of America. Seismological Society of America. 75 (2): 455–73.