- Type:
- Earthquake
- Date:
- July 29, 2021 CE
- Location:
- 2021 Chignik, Alaska Earthquake
- Magnitude:
- 8.2 Mww
- Depth:
- 35 km
- Intensity (MMI):
- 7.355
Cross-catalog records
This event is recorded in 6 separate scientific catalogs, each of which may give a different magnitude (the disagreement between catalogs is itself valuable for research):
- USGS_COMCAT: Mww 8.2
- NOAA_SIGEQ: Mw 8.2
- USGS_COMCAT: ML 5.5
- USGS_COMCAT: ML 5.1
- USGS_COMCAT: mb 5.7
- USGS_COMCAT: ML 5.9
Other earthquake records of 2021 CE
- Haiti · Mw 7.2 · 2,248 deaths
- Indonesia, Sulawesi: Mamuju, Majene · Mw 6.2 · 105 deaths
- Pakistan, Balochistan Province · Mw 5.9 · 42 deaths
- Rwanda, Rubavu, Congo · Mb 4.7 · 32 deaths
- China, Qinghai Province · Mw 7.3 · 20 deaths
- Indonesia, Java: Lumajang, Malang · Mw 6 · 10 deaths
Source: U.S. Geological Survey, Advanced National Seismic System (ANSS) Comprehensive Catalog (ComCat) · License: U.S. Public Domain (USGS) · institutional record ↗
Frequently asked questions
- When did M 8.2 - 2021 Chignik, Alaska Earthquake (2021 CE) happen?
- July 29, 2021 CE.
- Where does this information come from?
- This record comes from U.S. Geological Survey, Advanced National Seismic System (ANSS) Comprehensive Catalog (ComCat); it was not hand-authored and is stored together with its source.