Oklahoma earthquakes

M2.5 earthquake 6 km WSW of Helena, Oklahoma

A magnitude 2.5 earthquake struck 6 km WSW of Helena, Oklahoma on Wed, Mar 17, 2021, 5:59 PM CDT (22:59 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.3 11 km W of Hennessey, Oklahoma. This one was a foreshock.

Helena 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
2.5 (ml), micro
Local time
UTC
2021-03-17 22:59:49 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
36.515° N, 98.337° 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
±0.27
Depth from
Operator assigned
Station coverage gap
95°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 67 in the 60 days after this one and 117 in the 30 days before it.

After

  1. 2.15 km N of Ames, Oklahoma · 2013 days ago · 8 km deep · 28 km away
  2. 1.914 km SSE of Waynoka, Oklahoma · 2013 days ago · 6 km deep · 42 km away
  3. 1.66 km SW of Manchester, Oklahoma · 2013 days ago · 5 km deep · 54 km away
  4. 1.811 km S of Ames, Oklahoma · 2013 days ago · 5 km deep · 44 km away
  5. 1.74 km N of Ames, Oklahoma · 2012 days ago · 8 km deep · 29 km away
  6. 1.68 km NW of Perry, Oklahoma · 2012 days ago · 8 km deep · 90 km away
  7. 2.49 km WSW of Isabella, Oklahoma · 2012 days ago · 7 km deep · 37 km away
  8. 2.36 km W of Mutual, Oklahoma · 2012 days ago · 13 km deep · 87 km away
  9. 1.95 km NNE of Ames, Oklahoma · 2011 days ago · 8 km deep · 29 km away
  10. 1.59 km NNE of Quinlan, Oklahoma · 2011 days ago · 8 km deep · 59 km away
  11. 1.75 km NW of Bison, Oklahoma · 2011 days ago · 5 km deep · 48 km away
  12. 3.311 km W of Hennessey, Oklahoma · 2011 days ago · 6 km deep · 53 km away · felt by 7
  13. 1.54 km N of Breckinridge, Oklahoma · 2010 days ago · 7 km deep · 54 km away
  14. 2.4Oklahoma · 2005 days ago · 5 km deep · 62 km away · felt by 1
  15. 1.710 km ESE of Jefferson, Oklahoma · 2005 days ago · 7 km deep · 62 km away
  16. 1.96 km N of Nardin, Oklahoma · 2004 days ago · 4 km deep · 88 km away
  17. 2.07 km N of Ames, Oklahoma · 2004 days ago · 7 km deep · 27 km away
  18. 2.15 km N of Ames, Oklahoma · 2004 days ago · 8 km deep · 28 km away
  19. 1.76 km NNE of Loyal, Oklahoma · 2000 days ago · 6 km deep · 58 km away
  20. 1.83 km SE of Marshall, Oklahoma · 1999 days ago · 6 km deep · 79 km away
  21. 1.74 km S of Avard, Oklahoma · 1997 days ago · 6 km deep · 44 km away
  22. 1.611 km NNW of Medford, Oklahoma · 1997 days ago · 8 km deep · 64 km away · felt by 1
  23. 1.69 km NNE of Quinlan, Oklahoma · 1995 days ago · 8 km deep · 58 km away
  24. 1.810 km NNE of Quinlan, Oklahoma · 1995 days ago · 8 km deep · 58 km away
  25. 2.65 km N of Ames, Oklahoma · 1989 days ago · 8 km deep · 28 km away
  26. 2.610 km NW of Perry, Oklahoma · 1988 days ago · 7 km deep · 89 km away · felt by 3
  27. 1.910 km ESE of Jefferson, Oklahoma · 1988 days ago · 7 km deep · 62 km away
  28. 1.616 km SE of Waynoka, Oklahoma · 1988 days ago · 9 km deep · 39 km away
  29. 3.05 km SW of Manchester, Oklahoma · 1987 days ago · 9 km deep · 54 km away
  30. 1.86 km NW of Lamont, Oklahoma · 1987 days ago · 8 km deep · 69 km away
  31. 1.59 km NNE of Quinlan, Oklahoma · 1986 days ago · 8 km deep · 58 km away
  32. 1.56 km SW of Manchester, Oklahoma · 1985 days ago · 5 km deep · 54 km away
  33. 2.010 km ESE of Jefferson, Oklahoma · 1985 days ago · 5 km deep · 62 km away
  34. 1.510 km ESE of Jefferson, Oklahoma · 1985 days ago · 7 km deep · 62 km away
  35. 1.910 km W of Lamont, Oklahoma · 1985 days ago · 6 km deep · 62 km away
  36. 1.910 km W of Lamont, Oklahoma · 1985 days ago · 5 km deep · 63 km away
  37. 1.910 km ESE of Jefferson, Oklahoma · 1984 days ago · 8 km deep · 62 km away
  38. 2.17 km S of Byron, Oklahoma · 1984 days ago · 5 km deep · 36 km away
  39. 1.711 km SE of Kingfisher, Oklahoma · 1982 days ago · 21 km deep · 91 km away
  40. 1.65 km SW of Manchester, Oklahoma · 1979 days ago · 7 km deep · 55 km away
  41. 1.810 km NW of Perry, Oklahoma · 1979 days ago · 7 km deep · 89 km away
  42. 2.09 km W of Mulhall, Oklahoma · 1979 days ago · 5 km deep · 89 km away
  43. 1.89 km NNW of Perry, Oklahoma · 1977 days ago · 6 km deep · 90 km away
  44. 2.010 km NNW of Perry, Oklahoma · 1976 days ago · 6 km deep · 90 km away
  45. 2.39 km NNW of Perry, Oklahoma · 1976 days ago · 6 km deep · 91 km away
  46. 1.617 km SE of Waynoka, Oklahoma · 1975 days ago · 8 km deep · 35 km away
  47. 1.517 km SE of Waynoka, Oklahoma · 1975 days ago · 9 km deep · 35 km away
  48. 2.310 km NW of Perry, Oklahoma · 1973 days ago · 8 km deep · 89 km away
  49. 2.010 km SW of Hardtner, Kansas · 1971 days ago · 7 km deep · 58 km away
  50. 2.34 km W of Lucien, Oklahoma · 1969 days ago · 8 km deep · 79 km away
  51. 1.64 km W of Lucien, Oklahoma · 1969 days ago · 7 km deep · 79 km away
  52. 2.310 km W of Lamont, Oklahoma · 1967 days ago · 8 km deep · 63 km away
  53. 1.54 km WNW of Dover, Oklahoma · 1966 days ago · 5 km deep · 68 km away
  54. 1.64 km W of Dover, Oklahoma · 1966 days ago · 5 km deep · 68 km away · felt by 1
  55. 1.84 km W of Dover, Oklahoma · 1965 days ago · 4 km deep · 68 km away
  56. 2.23 km SE of Meno, Oklahoma · 1965 days ago · 7 km deep · 24 km away
  57. 1.84 km W of Dover, Oklahoma · 1965 days ago · 5 km deep · 68 km away
  58. 2.14 km W of Dover, Oklahoma · 1965 days ago · 5 km deep · 68 km away · felt by 1
  59. 1.74 km W of Dover, Oklahoma · 1965 days ago · 5 km deep · 68 km away
  60. 1.95 km W of Lucien, Oklahoma · 1965 days ago · 7 km deep · 78 km away

The first 60 of 67.

Before

  1. 1.57 km ENE of Nescatunga, Oklahoma · 2016 days ago · 6 km deep · 37 km away
  2. 2.05 km N of Ames, Oklahoma · 2017 days ago · 8 km deep · 28 km away · felt by 1
  3. 2.48 km SE of Loyal, Oklahoma · 2018 days ago · 6 km deep · 71 km away
  4. 1.69 km SW of Waynoka, Oklahoma · 2019 days ago · 7 km deep · 56 km away
  5. 1.79 km NW of Perry, Oklahoma · 2019 days ago · 7 km deep · 90 km away
  6. 1.68 km NW of Ames, Oklahoma · 2020 days ago · 6 km deep · 25 km away
  7. 1.510 km NE of Quinlan, Oklahoma · 2020 days ago · 7 km deep · 57 km away
  8. 1.510 km NNE of Quinlan, Oklahoma · 2020 days ago · 7 km deep · 58 km away
  9. 2.410 km NNE of Quinlan, Oklahoma · 2020 days ago · 8 km deep · 58 km away
  10. 1.710 km NNE of Quinlan, Oklahoma · 2020 days ago · 8 km deep · 58 km away
  11. 1.59 km NNE of Quinlan, Oklahoma · 2020 days ago · 7 km deep · 58 km away
  12. 1.55 km SW of Manchester, Oklahoma · 2020 days ago · 5 km deep · 54 km away
  13. 1.83 km SSE of Meno, Oklahoma · 2022 days ago · 6 km deep · 24 km away
  14. 2.18 km NNE of Ames, Oklahoma · 2022 days ago · 7 km deep · 28 km away
  15. 2.43 km SE of Meno, Oklahoma · 2022 days ago · 6 km deep · 24 km away
  16. 1.58 km ESE of Dover, Oklahoma · 2023 days ago · 5 km deep · 78 km away
  17. 2.15 km N of Ames, Oklahoma · 2024 days ago · 8 km deep · 28 km away · felt by 2
  18. 2.22 km ESE of Perry, Oklahoma · 2024 days ago · 7 km deep · 100 km away · felt by 3
  19. 2.19 km SW of Waynoka, Oklahoma · 2024 days ago · 7 km deep · 56 km away
  20. 1.77 km N of Nardin, Oklahoma · 2025 days ago · 8 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ok2021fiug (also filed as us7000dke9). Read Tue, Sep 22, 2026, 9:24 PM UTC.