Oklahoma earthquakes

M1.8 earthquake 12 km SSW of Bradley, Oklahoma

A magnitude 1.8 earthquake struck 12 km SSW of Bradley, Oklahoma on Tue, May 11, 2021, 5:15 AM CDT (10:15 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.0 12 km SE of Ratliff City, Oklahoma. This one was a foreshock.

Bray forecastMore in Oklahoma

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2021-05-11 10:15:27 UTC
Depth
18.2 km (11.3 mi), shallow
Epicenter
34.773° N, 97.769° W
Region
Oklahoma
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.24
Station coverage gap
63°
Stations used
87

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 66 in the 30 days before it.

After

  1. 2.012 km SE of Ratliff City, Oklahoma · 1960 days ago · 5 km deep · 55 km away
  2. 2.211 km SE of Ratliff City, Oklahoma · 1960 days ago · 5 km deep · 54 km away
  3. 1.810 km SE of Ratliff City, Oklahoma · 1960 days ago · 5 km deep · 53 km away
  4. 2.012 km SE of Ratliff City, Oklahoma · 1957 days ago · 5 km deep · 55 km away
  5. 2.010 km SE of Ratliff City, Oklahoma · 1956 days ago · 5 km deep · 53 km away
  6. 1.65 km SW of Dibble, Oklahoma · 1954 days ago · 9 km deep · 26 km away
  7. 2.76 km SW of Dibble, Oklahoma · 1954 days ago · 11 km deep · 25 km away · felt by 7
  8. 1.86 km SSW of Tuttle, Oklahoma · 1952 days ago · 6 km deep · 53 km away
  9. 1.88 km SE of Ratliff City, Oklahoma · 1946 days ago · 5 km deep · 52 km away
  10. 2.09 km ESE of Chickasha, Oklahoma · 1942 days ago · 8 km deep · 30 km away · felt by 1
  11. 1.67 km SW of Dibble, Oklahoma · 1942 days ago · 7 km deep · 25 km away
  12. 3.37 km SW of Dibble, Oklahoma · 1938 days ago · 12 km deep · 24 km away · felt by 27
  13. 1.54 km SSE of Mill Creek, Oklahoma · 1936 days ago · 3 km deep · 98 km away
  14. 1.87 km SW of Dibble, Oklahoma · 1933 days ago · 10 km deep · 25 km away
  15. 1.82 km SSW of Blanchard, Oklahoma · 1928 days ago · 5 km deep · 40 km away
  16. 1.72 km SSW of Blanchard, Oklahoma · 1928 days ago · 7 km deep · 40 km away
  17. 1.52 km SSW of Blanchard, Oklahoma · 1927 days ago · 7 km deep · 39 km away · felt by 1
  18. 2.110 km SE of Ratliff City, Oklahoma · 1925 days ago · 5 km deep · 54 km away
  19. 1.612 km SE of Ratliff City, Oklahoma · 1921 days ago · 5 km deep · 55 km away
  20. 1.713 km SE of Ratliff City, Oklahoma · 1918 days ago · 6 km deep · 56 km away
  21. 2.16 km NNW of Lindsay, Oklahoma · 1915 days ago · 10 km deep · 19 km away · felt by 3
  22. 1.713 km SE of Ratliff City, Oklahoma · 1913 days ago · 5 km deep · 57 km away
  23. 1.612 km SE of Ratliff City, Oklahoma · 1913 days ago · 4 km deep · 55 km away
  24. 2.011 km SE of Ratliff City, Oklahoma · 1913 days ago · 5 km deep · 55 km away
  25. 1.912 km SE of Ratliff City, Oklahoma · 1913 days ago · 6 km deep · 55 km away
  26. 1.89 km E of Chickasha, Oklahoma · 1911 days ago · 8 km deep · 30 km away · felt by 1
  27. 1.92 km SSW of Blanchard, Oklahoma · 1905 days ago · 7 km deep · 39 km away · felt by 2
  28. 1.92 km N of Ada, Oklahoma · 1905 days ago · 5 km deep · 100 km away
  29. 1.61 km SSE of Union City, Oklahoma · 1905 days ago · 5 km deep · 69 km away
  30. 1.52 km SE of Union City, Oklahoma · 1904 days ago · 4 km deep · 68 km away

Before

  1. 2.59 km ESE of Chickasha, Oklahoma · 1961 days ago · 9 km deep · 30 km away · felt by 6
  2. 2.69 km ESE of Chickasha, Oklahoma · 1961 days ago · 9 km deep · 30 km away · felt by 6
  3. 2.014 km NE of Leon, Oklahoma · 1962 days ago · 11 km deep · 99 km away · felt by 2
  4. 1.94 km S of Ratliff City, Oklahoma · 1967 days ago · 7 km deep · 47 km away
  5. 2.18 km SW of Erin Springs, Oklahoma · 1969 days ago · 14 km deep · 8 km away
  6. 2.28 km SW of Erin Springs, Oklahoma · 1969 days ago · 13 km deep · 9 km away · felt by 3
  7. 1.98 km SW of Erin Springs, Oklahoma · 1969 days ago · 5 km deep · 8 km away
  8. 1.68 km SW of Erin Springs, Oklahoma · 1969 days ago · 11 km deep · 9 km away
  9. 1.78 km SW of Erin Springs, Oklahoma · 1969 days ago · 14 km deep · 8 km away
  10. 2.08 km SW of Erin Springs, Oklahoma · 1969 days ago · 11 km deep · 8 km away
  11. 1.59 km SE of Tatums, Oklahoma · 1969 days ago · 4 km deep · 52 km away
  12. 1.913 km SW of Erin Springs, Oklahoma · 1970 days ago · 14 km deep · 6 km away
  13. 1.69 km SW of Erin Springs, Oklahoma · 1970 days ago · 14 km deep · 8 km away
  14. 2.15 km ESE of Ratliff City, Oklahoma · 1971 days ago · 7 km deep · 48 km away
  15. 2.09 km SE of Ratliff City, Oklahoma · 1971 days ago · 5 km deep · 52 km away
  16. 1.65 km SE of Ratliff City, Oklahoma · 1972 days ago · 6 km deep · 49 km away
  17. 1.54 km ESE of Ratliff City, Oklahoma · 1972 days ago · 5 km deep · 46 km away
  18. 1.55 km ESE of Ratliff City, Oklahoma · 1972 days ago · 5 km deep · 48 km away
  19. 1.76 km ESE of Ratliff City, Oklahoma · 1972 days ago · 7 km deep · 50 km away
  20. 2.414 km WNW of Union City, Oklahoma · 1973 days ago · 7 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ok2021jehs. Read Wed, Sep 23, 2026, 12:52 AM UTC.