1965 Puget Sound earthquake

1965 Puget Sound earthquake
1965 Puget Sound earthquake is located in Washington (state)
Olympia
Olympia
Seattle
Seattle
1965 Puget Sound earthquake
UTC time1965-04-29 15:28:45
ISC event858143
USGS-ANSSComCat
Local dateApril 29, 1965 (1965-04-29)
Local time08:28:45 PDT
Magnitude6.7 Mw[1]
Depth59 km (37 mi)[2]
Epicenter47°24′N 122°18′W / 47.4°N 122.3°W / 47.4; -122.3
TypeDip-slip
Areas affectedPuget Sound region
Washington
United States
Total damage$12.5–28 million[2]
Max. intensityMMI VIII (Severe)
Peak acceleration0.204 g at Olympia
AftershocksNone
Casualties7 dead

The 1965 Puget Sound earthquake occurred at 08:28 AM PDT (15:28 UTC) on April 29 within the Puget Sound region of Washington state. It had a magnitude of 6.7 on the moment magnitude scale and a maximum perceived intensity of VIII (Severe) on the Mercalli intensity scale. It caused the deaths of seven people and about $12.5–28 million in damage.[2][3] There were no recorded aftershocks.[4]

  1. ^ Cite error: The named reference Dewey was invoked but never defined (see the help page).
  2. ^ a b c National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information. "Significant Earthquake Information". doi:10.7289/V5TD9V7K. Retrieved March 22, 2024.
  3. ^ "Puget Sound area, Washington 1965 04 29 15:28:43.7 UTC Magnitude 6.5 Intensity VIII". Historic Earthquakes. United States Geological Survey. October 21, 2009. Retrieved January 8, 2012.
  4. ^ Oakeshott, G.B. (July 1965). "The Seattle Earthquake" (PDF). Mineral Information Service. 18 (7): 140–141. Archived from the original (PDF) on March 12, 2020. Retrieved January 8, 2012.