- Type:
- Earthquake
- Date:
- June 28, 1925 CE
- Location:
- The 1925 Clarkston Valley, Montana Earthquake
- Magnitude:
- 6.6 Mw
- Intensity (MMI):
- 8.462
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: Mw 6.6
- NOAA_SIGEQ: Ms 6.7
- USGS_COMCAT: Mfa 6.4
- USGS_COMCAT: Mfa 5.5
- USGS_COMCAT: Mfa 5.5
- USGS_COMCAT: Mfa 5.5
Other earthquake records of 1925 CE
- China, Yunnan Province: Talifu · Mw 6.9 · 5,800 deaths
- Iran, Bajestan · M 5.5 · 500 deaths
- Japan, Honshu: Tajima · Ms 6.8 · 395 deaths
- Turkey, Ardahan · Ms 5.8 · 200 deaths
- W. Luzon Island, Philippines · Ms 6.8 · 17 deaths
- California, Santa Barbara · Mw 6.8 · 13 deaths
Press of the period
Archive newspaper issues published within a few days of this event. These issues may not report the event itself; they offer a direct window onto the press of the period.
- Dziennik Białostocki R.3June 28, 1925open in archive ↗
- Victoria Daily TimesJune 30, 1925open in archive ↗
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 6.6 - The 1925 Clarkston Valley, Montana Earthquake (1925 CE) happen?
- June 28, 1925 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.
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