List of earthquakes in the United States explained

The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in italics were not part of the United States when the event occurred.

List of earthquakes

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Further information
	Aleutian Islands, Alaska	9.2	Unknown	1585 Aleutian Islands earthquake
	Washington, Oregon, California	8.7–9.2	Unknown	1700 Cascadia earthquake
	Massachusetts	5.9	0	1755 Cape Ann earthquake
	Alaska	8.0	Unknown	[1]
	Alaska	8.0	Unknown
	Missouri	7.5–8.0	−500	1811–1812 New Madrid earthquakes
	California	6.9, 7.5	40+	1812 San Juan Capistrano earthquake
	California	7.1–7.5	1	1812 Ventura earthquake
	Hawaii	7.0	0	[2]
	California	6.8–7.2	0	1838 San Andreas earthquake
	Arkansas	6.3	0
	California	7.9		1857 Fort Tejon earthquake
	Kansas	5.1		1867 Manhattan, Kansas earthquake
	Hawaii	7.9		1868 Hawaii earthquake
	California	6.3–6.7		1868 Hayward earthquake
	Hawaii	6.8	0	1871 Lānaʻi earthquake
	California	7.4–7.9		1872 Owens Valley earthquake[3]
	Washington	6.5–7.0		1872 North Cascades earthquake
	California-Oregon	7.3	0	1873 Oregon-California earthquake
	Alaska	7.0	0
	New York	4.9–5.5
	South Carolina	6.9–7.3		1886 Charleston earthquake
	California	6.4	1	1892 Vacaville–Winters earthquakes
	California	6.4	0	1892 Vacaville–Winters earthquakes
	Missouri	6.6	0	1895 Charleston earthquake
	Alaska	8.2	0	1899 Yakutat Bay earthquakes
	Alaska	8.2	0	1899 Yakutat Bay earthquakes
	California	6.4	6	1899 San Jacinto earthquake
	Alaska	7.9	0	[4]
	Utah	7.0	0	1901 Richfield earthquake
	Alaska	7.8	0
	Alaska	7.8	0
	Alaska	7.3	0
	California	7.9	+	1906 San Francisco earthquake
	Alaska	8.4	0	1906 Aleutian Islands earthquake
	Indiana	5.1		1909 Wabash River earthquake
	California	6.2	6	1915 Imperial Valley earthquakes
	Nevada	6.8		1915 Pleasant Valley earthquake
	California	6.8	0	1918 San Jacinto earthquake
	Utah	6.3	0	1921 Sevier Valley earthquake
	California	7.6	0
	California	7.2	0
	Montana	6.6	0	1925 Montana earthquake
	California	6.5–6.8		1925 Santa Barbara earthquake
	Alaska	7.3	0	[5]
	California	7.3	0	1927 Lompoc earthquake
	Alaska	7.8	0	[6]
	Texas	6.5		1931 Valentine earthquake
	Nevada	7.2	0	1932 Cedar Mountain earthquake
	California	6.4		1933 Long Beach earthquake
	California	7.1	0
	Utah	6.6	2	1934 Hansel Valley earthquake[7]
	Montana	6.2		1935 Helena earthquake
	Oregon, Washington	5.8		1936 State Line earthquake
	Alaska	7.3	0	1937 Alaska earthquake
	Alaska	8.2	0	[8]
	California	6.9		1940 El Centro earthquake
	New Hampshire	5.3		1940 New Hampshire earthquakes
	New Hampshire	5.5		1940 New Hampshire earthquakes
	Alaska	7.6	0	[9]
	New York	5.8		1944 Cornwall–Massena earthquake
	Alaska	8.6		1946 Aleutian Islands earthquake
	Alaska	7.2	0
	California	6.4		1948 Desert Hot Springs earthquake
	Washington	6.7		1949 Olympia earthquake
	California	7.3		1952 Kern County earthquake
	Nevada	6.6	0	1954 Rainbow Mountain earthquake
	Nevada	6.8	0	1954 Stillwater earthquake
	Nevada	7.1	0	1954 Fairview Peak earthquake
	Nevada	6.8	0	1954 Dixie Valley earthquake
	Alaska	8.6		1957 Andreanof Islands earthquake
	Alaska	7.3	0	1958 Huslia earthquake
	Alaska	7.8	(tsunami)	1958 Lituya Bay earthquake and megatsunami
	Montana, Wyoming, Idaho	7.2	+	1959 Hebgen Lake earthquake
	Alaska	9.2		1964 Alaska earthquake
	Alaska	8.7		1965 Rat Islands earthquake
	Washington	6.7		1965 Puget Sound earthquake
	Alaska	7.8	0	[10]
	Colorado	5.3		Rocky Mountain Arsenal#Deep injection well
	Colorado	5.2		Rocky Mountain Arsenal#Deep injection well
	California	6.6	0	1968 Borrego Mountain earthquake
	Illinois	5.4		1968 Illinois earthquake
	California	5.6, 5.7		1969 Santa Rosa earthquakes	Doublet
	California	6.5–6.7	–65	1971 San Fernando earthquake
	Alaska	7.6	0	[11]
	Alaska	7.6		1975 Near Islands earthquake
	Hawaii	7.7		1975 Hawaii earthquake[12]
	California	7.2	5	1980 Eureka earthquake[13]
	California	6.5		1983 Coalinga earthquake
	Hawaii	6.7	0	1983 Kaoiki earthquake
	Idaho	7.3		1983 Borah Peak earthquake
	California	6.2		1984 Morgan Hill earthquake
	Alaska	8.0	0	[14] [15]
	California	6.0	0	1986 North Palm Springs earthquake
	California	6.4	0	1986 Chalfant Valley earthquake[16]
	California	5.9		1987 Whittier Narrows earthquake
	California	6.2	0	1987 Superstition Hills earthquakes
	California	6.6	2	1987 Superstition Hills earthquakes
	Alaska	7.9	0	[17]
	Alaska	7.8	0	[18]
	California	6.9		1989 Loma Prieta earthquake
	Alaska	7.1	0	[19]
	Alaska	7.0	0	[20]
	California	5.6		1991 Sierra Madre earthquake
	Oregon	7.0	0	[21]
	California	6.3	0	1992 Joshua Tree earthquake
–26, 1992	California	6.5–7.2		1992 Cape Mendocino earthquakes
	California	7.3		1992 Landers earthquake
	California	6.5		1992 Big Bear earthquake
	Utah	5.8	0	1992 St. George earthquake[22]
	Oregon	5.6		1993 Scotts Mills earthquake
	Oregon	6.0		1993 Klamath Falls earthquakes
	California	6.7		1994 Northridge earthquake
	California	7.0	0	1994 Northern California earthquake[23]
	Texas	5.7		1995 Marathon earthquake
	Alaska	7.9	0	[24]
	Pennsylvania	5.2		1998 Pymatuning earthquake
	California	7.1		1999 Hector Mine earthquake
	Alaska	7.0	0	[25]
	Alaska	7.0	0	[26]
	Washington	6.8		2001 Nisqually earthquake
	Alaska	7.9		2002 Denali earthquake
	Alaska	7.8	0	2003 Alaska earthquake[27]
	California	6.5		2003 San Simeon earthquake
	California	7.2	0	[28]
	Florida	5.9		2006 Gulf of Mexico earthquake
	Hawaii	6.7		2006 Kiholo Bay earthquake
	California	5.5		2007 Alum Rock earthquake
	Nevada	5.9		2008 Wells earthquake
	Illinois	5.2		2008 Illinois earthquake
	California	5.4		2008 Chino Hills earthquake
	California	6.5		2010 Eureka earthquake
	California	7.2		2010 Baja California earthquake
	Colorado	5.3		2011 Colorado earthquake
	Virginia	5.8		2011 Virginia earthquake
	Oklahoma	5.7		2011 Oklahoma earthquake
	Alaska	7.5	0	2013 Craig, Alaska earthquake[29]
	California	5.1	0	2014 La Habra earthquake
	Alaska	7.9		2014 Aleutian Islands earthquake
	Alaska	6.0		2014 Palma Bay earthquake
	California	6.0		2014 South Napa earthquake
	Alaska	7.1		2016 Old Iliamna earthquake
	Oklahoma	5.8		2016 Oklahoma earthquake
	Alaska	7.9		2018 Gulf of Alaska earthquake
	Hawaii	6.9	0	2018 Hawaii earthquake
	Alaska	7.1		2018 Anchorage earthquake
	California	6.4	1	2019 Ridgecrest earthquakes
	California	7.1	0	2019 Ridgecrest earthquakes
	Utah	5.7	0	2020 Salt Lake City earthquake
	Idaho	6.5	0	2020 Central Idaho earthquake
	Nevada	6.5	0	2020 Monte Cristo Range earthquake[30]
	Alaska	7.8	0	2020 Alaska Peninsula earthquake[31]
	North Carolina	5.1	0	2020 Sparta earthquake[32]
	Alaska	7.6	0	[33]
	Alaska	8.2	0	2021 Chignik earthquake[34]
	California	6.4 Mw	2	2022 Ferndale earthquake[35]
	New Jersey	4.8 Mw	0	2024 New Jersey earthquake[36]

Earthquake swarms which affected the United States:

• 1962–71 Denver earthquake swarm^[37]
• Enola earthquake swarm
• 2008 Reno earthquakes
• Guy-Greenbrier earthquake swarm
• Oklahoma earthquake swarms (2009–present)

Earthquakes which affected the United States but whose epicenters were outside the United States borders:

• 1925 Charlevoix–Kamouraska earthquake – magnitude 6.2 earthquake, no injuries or fatalities anywhere
• 1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US)
• 2010 Baja California earthquake (Mexico near S California) – magnitude 7.2 earthquake, 4 fatalities and 100 injuries, none in the United States

Earthquakes which did not affect the United States directly, but caused tsunamis which did:

• 1960 Valdivia earthquake and tsunami – magnitude 9.5 earthquake, between 2200 and 6000 fatalities, including 61 in Hilo, HI
• 2006 Kuril Islands earthquake and tsunami – magnitude 8.3 earthquake, no injuries or fatalities anywhere
• 2009 Samoa earthquake and tsunami – magnitude 8.0 earthquake with an epicenter southwest of American Samoa generated tsunami waves up to 5m (16feet), killing 34 people in American Samoa and causing extensive damage^[38]
• 2010 Chile earthquake and tsunami – magnitude 8.8 earthquake, ~525 fatalities and unknown number of injuries, none in the United States
• 2011 Tohoku earthquake and tsunami – magnitude 9.0 earthquake, 15,850–28,000 fatalities and 6,011 injured, one fatality and unknown number of injuries in the United States
• 2012 Haida Gwaii earthquake – magnitude 7.8 earthquake with an epicenter on Moresby Island in British Columbia, the second largest Canadian earthquake ever recorded by a seismometer, over 100,000 people were evacuated to higher ground in the state of Hawai'i

List of strongest earthquakes by states and territories

• Noted, magnitudes are reported on the Moment magnitude scale (M_w).

! State(s)! Magnitude ! Date! Further information

	5.1	October 18, 1916	1916 Irondale earthquake
	9.2	March 27, 1964	1964 Alaska earthquake
American Samoa	8.3–8.5	June 26, 1917	1917 Samoa earthquake
	7.6	May 3, 1887	1887 Sonora earthquake
	7.6–7.9	December 16, 1811	1811–1812 New Madrid earthquakes
	7.9	January 9, 1857	1857 Fort Tejon earthquake
	6.6	November 8, 1882	[39]
	4.4–5.0	May 16, 1791	[40]
	4.1	November 30, 2017	[41]
	5.8	August 23, 2011	2011 Virginia earthquake
	4.4	January 12, 1879	[42]
	4.5	March 5, 1914	[43]
Guam	8.1	September 22, 1902
	7.9	April 2, 1868	1868 Hawaii earthquake
	6.9	October 28, 1983	1983 Borah Peak earthquake
	5.3	November 9, 1968	1968 Illinois earthquake
	5.1	September 27, 1909	1909 Wabash River earthquake
	5.0–5.1	November 12, 1934	[44]
	5.1	April 24, 1867	1867 Manhattan, Kansas earthquake
	7.6–7.9	December 16, 1811	1811–1812 New Madrid earthquakes
	4.2	October 19, 1930	[45]
	5.9	March 21, 1904	[46]
	5.8	August 23, 2011	2011 Virginia earthquake
	5.9	November 18, 1755	1755 Cape Ann earthquake
	4.6	August 10, 1947	[47]
	4.6	July 9, 1975	1975 Morris earthquake
	7.6–7.9	December 16, 1811	1811–1812 New Madrid earthquakes
	7.6–7.9	December 16, 1811	1811–1812 New Madrid earthquakes
	7.2	August 17, 1959	1959 Hebgen Lake earthquake
	7.0	November 15, 1877	[48]
	7.3	December 16, 1954	1954 Fairview earthquake
	6.5	June 1, 1638	1638 New Hampshire earthquake
	5.3	November 29, 1783	1783 New Jersey earthquake
	6.2	November 15, 1906	[49]
	5.8	September 5, 1944	1944 Cornwall–Massena earthquake
	5.2	February 21, 1916	[50]
	4.4	July 8, 1968	[51]
	5.4	March 9, 1937	[52]
	5.8	September 3, 2016	2016 Oklahoma earthquake
	8.7–9.2	January 26, 1700	1700 Cascadia earthquake
	5.2	September 25, 1998	1998 Pymatuning earthquake
Puerto Rico	8.0–8.3	May 2, 1787	1787 Boricua earthquake
	4.7	June 10, 1951	[53]
	6.9–7.3	August 31, 1886	1886 Charleston earthquake
	4.5	June 2, 1911	[54]
	7.6–7.9	December 16, 1811	1811–1812 New Madrid earthquakes
	6.5	August 16, 1931	1931 Valentine earthquake
	7.0	November 13, 1901	1901 Richfield earthquake
	7.5	November 18, 1867	1867 Virgin Islands earthquake and tsunami
	4.0	March 31, 1953	[55]
	5.8	August 23, 2011	2011 Virginia earthquake
	8.7–9.2	January 26, 1700	1700 Cascadia earthquake
	5.8	August 23, 2011	2011 Virginia earthquake
	unk.	May 6, 1947	1947 Wisconsin earthquake
	7.2	August 17, 1959	1959 Hebgen Lake earthquake

See also

• Geology of North America
• Geology of the United States
• List of tsunamis
• Lists of earthquakes
  • List of earthquakes in Alaska
  • List of earthquakes in California
  • List of earthquakes in Hawaii
  • List of earthquakes in Illinois
  • List of earthquakes in Kansas
  • List of earthquakes in Montana
  • List of earthquakes in Nevada
  • List of earthquakes in Puerto Rico
  • List of earthquakes in Texas
  • List of earthquakes in Utah
  • List of earthquakes in Virginia
  • List of earthquakes in Washington

External links

• Lists, Maps, and Statistics at United States Geological Survey (USGS)
• Earthquake history of the United States through 1970 at USGS
• Earthquake Data and Information at National Centers for Environmental Information (NCEI)
• News: Buildings Can Be Designed to Withstand Earthquakes. Why Doesn't the U.S. Build More of Them?. Thomas Fuller. Anjali Singhvi. Mika Gröndahl. Derek Watkins. The New York Times. June 4, 2019. June 5, 2019.

Notes and References

1. Web site: Significant Earthquakes Search, country=USA. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database . 1972 . NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K.
2. Web site: Preferred Magnitudes of Selected Significant Earthquakes. June 24, 2013. United States Geological Survey. May 5, 2020. August 31, 2020. https://web.archive.org/web/20200831120010/https://earthquake.usgs.gov/data/sign_eqs.pdf. live.
3. Web site: M 6.8 – Owens Valley, California. United States Geological Survey. January 23, 2020. August 3, 2020. https://web.archive.org/web/20200803052805/https://earthquake.usgs.gov/earthquakes/eventpage/cdmg18720326140600000/executive. live.
4. Web site: M 7.9 – Kodiak Island region, Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232233/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem16957718/executive. live.
5. Web site: M 7.3 – Southeastern Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232236/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem909582/executive. live.
6. Web site: M 7.8 – south of the Aleutian Islands. United States Geological Survey. August 13, 2019. December 31, 2019. https://web.archive.org/web/20191231164824/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem907930/executive. live.
7. Web site: M 6.6 – Utah. United States Geological Survey. January 23, 2020. August 3, 2020. https://web.archive.org/web/20200803084751/https://earthquake.usgs.gov/earthquakes/eventpage/ushis1041/executive. live.
8. Web site: M 8.2 – Alaska Peninsula. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232315/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem902774/executive. live.
9. Web site: M 7.6 – Southern Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232235/https://earthquake.usgs.gov/earthquakes/eventpage/iscgemsup900071/executive. live.
10. Web site: M 7.8 – Fox Islands, Aleutian Islands, Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232239/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem855112/executive. live.
11. Web site: M 7.6 – Southeastern Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232338/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem772060/executive. live.
12. Web site: M 7.7 – Kalapana Earthquake. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232346/https://earthquake.usgs.gov/earthquakes/eventpage/usp0000dsc/executive. live.
13. Web site: M 7.2 – offshore Northern California. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232313/https://earthquake.usgs.gov/earthquakes/eventpage/usp0001aq1/executive. live.
14. Web site: M 8.0 – Andreanof Islands, Aleutian Islands, Alaska. United States Geological Survey. August 13, 2019. August 13, 2019. https://web.archive.org/web/20190813232237/https://earthquake.usgs.gov/earthquakes/eventpage/usp0002tmu/executive. live.
15. Das. Shamita. Shamita Das. Kostrov. B. V.. 1990. Inversion for seismic slip rate history and distribution with stabilizing constraints: Application to the 1986 Andreanof Islands Earthquake. Journal of Geophysical Research: Solid Earth. en. 95. B5. 6899–6913. 10.1029/JB095iB05p06899. 1990JGR....95.6899D. 2156-2202. 2021-06-15. 2021-06-15. https://web.archive.org/web/20210615020642/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/JB095iB05p06899. live.
16. Web site: M 6.4 – Central California. United States Geological Survey. 2020-01-23. 2020-08-03. https://web.archive.org/web/20200803091424/https://earthquake.usgs.gov/earthquakes/eventpage/nc10085763/executive. live.
17. Web site: M 7.9 – Gulf of Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232311/https://earthquake.usgs.gov/earthquakes/eventpage/usp0003aq8/executive. live.
18. Web site: M 7.8 – Gulf of Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232236/https://earthquake.usgs.gov/earthquakes/eventpage/usp0003dnb/executive. live.
19. Web site: M 7.1 – south of Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232233/https://earthquake.usgs.gov/earthquakes/eventpage/usp0003z7h/executive. live.
20. Web site: M 7.0 – Alaska Peninsula. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232241/https://earthquake.usgs.gov/earthquakes/eventpage/usp0004s9h/executive. live.
21. Web site: M 7.0 – 136 km WSW of Brookings, Oregon. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232314/https://earthquake.usgs.gov/earthquakes/eventpage/usp0004vh7/executive. live.
22. Web site: 1992 – St. George, UT – M 5.8 . quake.utah.edu . Intermountain Seismic Belt Historical Earthquake Project . 2020-03-18 . 2020-03-18 . https://web.archive.org/web/20200318220809/https://quake.utah.edu/isbhep/1992-st-george-ut-m-5-8 . live .
23. Web site: M 7.0 – off the coast of Northern California. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232234/https://earthquake.usgs.gov/earthquakes/eventpage/ci3182936/executive. live.
24. Web site: M 7.9 – Andreanof Islands, Aleutian Islands, Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232234/https://earthquake.usgs.gov/earthquakes/eventpage/usp0007jcu/executive. live.
25. Web site: M 7.0 – Kodiak Island region, Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232344/https://earthquake.usgs.gov/earthquakes/eventpage/usp0009jj1/executive. live.
26. Web site: M 6.9 – Kodiak Island region, Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232238/https://earthquake.usgs.gov/earthquakes/eventpage/usp000a7f2/executive. live.
27. Web site: M 7.8 – Rat Islands, Aleutian Islands, Alaska. United States Geological Survey. 2020-01-23. 2020-08-03. https://web.archive.org/web/20200803072948/https://earthquake.usgs.gov/earthquakes/eventpage/usp000cd1n/executive. live.
28. Web site: M 7.2 – off the coast of Northern California. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232315/https://earthquake.usgs.gov/earthquakes/eventpage/iscgem7143782/executive. live.
29. Web site: M 7.5 – Southeastern Alaska. United States Geological Survey. 2019-08-13. 2019-08-13. https://web.archive.org/web/20190813232237/https://earthquake.usgs.gov/earthquakes/eventpage/usp000jxum/executive. live.
30. Web site: M 6.5 – 56 km W of Tonopah, Nevada . United States Geological Survey . 2020-05-15 . 2020-12-11 . https://web.archive.org/web/20201211182404/https://earthquake.usgs.gov/earthquakes/eventpage/nn00725272/executive . live .
31. Web site: M 7.8 – 99 km SSE of Perryville, Alaska. 12 May 2024. United States Geological Survey. 2020-07-22. https://web.archive.org/web/20200722073036/https://earthquake.usgs.gov/earthquakes/eventpage/us7000asvb/executive. live.
32. Web site: M 5.1 – 4 km SE of Sparta, North Carolina. 2020-08-12. United States Geological Survey. 2020-08-09. https://web.archive.org/web/20200809201234/https://earthquake.usgs.gov/earthquakes/eventpage/se60324281. live.
33. Web site: M 7.6 – 99 km SE of Sand Point, Alaska. 2020-10-19. United States Geological Survey. 2020-11-01. https://web.archive.org/web/20201101011323/https://earthquake.usgs.gov/earthquakes/eventpage/us6000c9hg/executive. live.
34. Web site: M 8.2 – Alaska Peninsula . 2021-07-29. United States Geological Survey. 2021-07-29. https://web.archive.org/web/20210729064015/https://earthquake.usgs.gov/earthquakes/eventpage/us6000f02w/executive. live.
35. Web site: M 6.4 – 15 km WSW of Ferndale, CA . 2022-12-28 . United States Geological Survey.
36. Web site: M 6.4 – 15 km WSW of Lebanon, NJ . 2022-12-28 . United States Geological Survey.
37. Healy. Rubey. Griggs. Raleigh. J.H.. W.W.. D.T.. C.B.. The Denver Earthquakes: disposal of waste fluids by injection into a deep well has triggered earthquakes near Denver, Colorado. Science. 161. 3848. 1301–1310. 27 September 1968. 13 July 2015. 10.1126/science.161.3848.1301. 17831340. 25 April 2015. https://web.archive.org/web/20150425201833/http://earthquake.usgs.gov/research/induced/pdf/Healy-et-al-1968-Science-(New-York-NY).pdf. live.
38. Web site: Gibbons. Helen. USGS Scientists Respond to Deadly Samoa Tsunami. United States Geological Survey. 5 May 2015. November 2009. 5 May 2015. https://web.archive.org/web/20150505102848/http://soundwaves.usgs.gov/2009/11/fieldwork2.html. live.
39. Web site: M 6.6 – Front Range, west of Fort Collins, Colorado. United States Geological Survey.
40. Web site: Largest Earthquake in Connecticut – Today in History: May 16. connecticuthistory.org. May 16, 2020 . April 16, 2022.
41. Web site: M 4.1 – 3 km NNE of Little Creek, Delaware. United States Geological Survey. April 16, 2022.
42. Web site: Bridges . C.A. . What was Florida's largest earthquake? . The Daytona Beach News Journal . January 1, 2024.
43. Web site: M 4.5 – 11 km SSW of Madison, Georgia. United States Geological Survey. April 16, 2022.
44. Web site: Wiser . Mike . Quakes rare, but Iowa has shaken . IowaNews.com . March 22, 2011 . January 1, 2024.
45. Web site: Despite Lack of Headlines, Louisiana in Earthquake Zone. wafb.com. March 6, 2010 . April 18, 2022.
46. Web site: History of Maine Earthquakes . The Northeast States Emergency Consortium . January 1, 2024.
47. Web site: Today in Earthquake History: August 10th . United States Geological Survey . November 8, 2023.
48. Web site: NEBRASKA EARTHQUAKE HAZARDS. Shakeout.org. April 16, 2022.
49. Web site: Jochems . Andy . Love . Dave . Earthquakes in New Mexico . New Mexico Bureau of Geology & Mineral Resources . January 1, 2024.
50. Web site: M 5.2 – 3 km NNE of Royal Pines, North Carolina. United States Geological Survey. April 16, 2022.
51. Web site: Anderson . Fred J . North Dakota Earthquake Catalog (1870-2015) . November 8, 2023.
52. Web site: Largest earthquakes in Ohio. ohiohistorycentral.org. April 16, 2022.
53. Web site: Heim . RJ . The deeper long history of mostly minor earthquakes in Southern New England . Turnto10.com . May 15, 2022 . NBC 10 . January 1, 2024.
54. Web site: Earth-shaking information about South Dakota earthquakes. keloland.com. June 18, 2021 . April 16, 2022.
55. Web site: History of Earthquakes in Vermont . The Northeast States Emergency Consortium . January 1, 2024.