Oklahoma earthquakes

M2.5 earthquake 8 km SSE of Byron, Oklahoma

A magnitude 2.5 earthquake struck 8 km SSE of Byron, Oklahoma on Wed, Oct 21, 2015, 7:38 AM CDT (12:38 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.7 4 km SW of Lambert, Oklahoma. This one was a foreshock.

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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
2015-10-21 12:38:53 UTC
Depth
5.4 km (3.3 mi), shallow
Epicenter
36.833° N, 98.259° 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.

Location uncertainty
About 1.9 km horizontally, 3.6 km in depth
Station coverage gap
114°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.78 km SSE of Milan, Kansas · 3997 days ago · 5 km deep · 68 km away
  2. 1.77 km ENE of Caldwell, Kansas · 3997 days ago · 6 km deep · 70 km away
  3. 2.69 km N of Caldwell, Kansas · 3997 days ago · 4 km deep · 65 km away
  4. 2.05 km W of Mayfield, Kansas · 3997 days ago · 5 km deep · 75 km away
  5. 3.16 km SSE of Manchester, Oklahoma · 3997 days ago · 6 km deep · 24 km away
  6. 1.68 km SSE of Anthony, Kansas · 3996 days ago · 7 km deep · 35 km away
  7. 2.53 km SW of Fairmont, Oklahoma · 3996 days ago · 7 km deep · 73 km away
  8. 1.97 km SW of Danville, Kansas · 3996 days ago · 4 km deep · 53 km away
  9. 1.77 km ENE of Caldwell, Kansas · 3996 days ago · 5 km deep · 69 km away
  10. 2.24 km NNE of Danville, Kansas · 3995 days ago · 4 km deep · 65 km away · felt by 1
  11. 1.64 km NNE of Danville, Kansas · 3995 days ago · 1 km deep · 64 km away
  12. 1.67 km ENE of Caldwell, Kansas · 3995 days ago · 6 km deep · 70 km away
  13. 2.83 km S of Renfrow, Oklahoma · 3995 days ago · 6 km deep · 54 km away · felt by 3
  14. 1.96 km S of Anthony, Kansas · 3995 days ago · 8 km deep · 35 km away
  15. 2.75 km WSW of Bluff City, Kansas · 3995 days ago · 6 km deep · 38 km away · felt by 2
  16. 1.67 km SW of Bluff City, Kansas · 3995 days ago · 6 km deep · 36 km away
  17. 2.64 km WNW of Jefferson, Oklahoma · 3995 days ago · 6 km deep · 39 km away
  18. 3.23 km SW of Deer Creek, Oklahoma · 3994 days ago · 6 km deep · 64 km away · felt by 6
  19. 1.57 km ENE of Caldwell, Kansas · 3994 days ago · 5 km deep · 70 km away
  20. 1.82 km SSE of Bluff City, Kansas · 3994 days ago · 3 km deep · 43 km away
  21. 2.53 km SW of Deer Creek, Oklahoma · 3994 days ago · 6 km deep · 64 km away
  22. 3.08 km SE of Harper, Kansas · 3994 days ago · 3 km deep · 51 km away
  23. 3.25 km WNW of Medford, Oklahoma · 3994 days ago · 5 km deep · 41 km away
  24. 3.55 km WNW of Medford, Oklahoma · 3994 days ago · 5 km deep · 42 km away
  25. 2.66 km NNW of Quinlan, Oklahoma · 3994 days ago · 5 km deep · 81 km away
  26. 1.64 km SW of Bluff City, Kansas · 3994 days ago · 4 km deep · 39 km away
  27. 2.6Oklahoma · 3994 days ago · 4 km deep · 35 km away
  28. 2.9Oklahoma · 3994 days ago · 3 km deep · 42 km away
  29. 3.010 km ESE of Chester, Oklahoma · 3993 days ago · 7 km deep · 87 km away
  30. 2.56 km ESE of Pond Creek, Oklahoma · 3993 days ago · 5 km deep · 51 km away
  31. 2.55 km WNW of Medford, Oklahoma · 3993 days ago · 5 km deep · 42 km away
  32. 2.66 km WSW of Hunter, Oklahoma · 3993 days ago · 3 km deep · 58 km away
  33. 2.81 km NNE of Fairmont, Oklahoma · 3993 days ago · 6 km deep · 72 km away
  34. 2.4Oklahoma · 3993 days ago · 2 km deep · 60 km away · felt by 1
  35. 2.69 km W of Pond Creek, Oklahoma · 3992 days ago · 7 km deep · 36 km away
  36. 2.55 km NE of Billings, Oklahoma · 3992 days ago · 7 km deep · 82 km away
  37. 2.55 km W of Lucien, Oklahoma · 3992 days ago · 8 km deep · 90 km away
  38. 2.08 km ENE of Caldwell, Kansas · 3992 days ago · 6 km deep · 70 km away
  39. 3.41 km NNE of Fairmont, Oklahoma · 3992 days ago · 5 km deep · 72 km away · felt by 13
  40. 1.58 km ENE of Caldwell, Kansas · 3992 days ago · 6 km deep · 70 km away
  41. 2.58 km S of Lamont, Oklahoma · 3992 days ago · 4 km deep · 67 km away
  42. 2.711 km NE of Nash, Oklahoma · 3992 days ago · 7 km deep · 30 km away
  43. 2.68 km SSE of Lambert, Oklahoma · 3992 days ago · 8 km deep · 26 km away
  44. 2.520 km W of Cleo Springs, Oklahoma · 3992 days ago · 5 km deep · 61 km away
  45. 3.310 km N of Caldwell, Kansas · 3992 days ago · 4 km deep · 65 km away · felt by 5
  46. 3.610 km N of Caldwell, Kansas · 3991 days ago · 4 km deep · 65 km away · felt by 14
  47. 2.59 km N of Caldwell, Kansas · 3991 days ago · 4 km deep · 65 km away
  48. 3.4Oklahoma · 3991 days ago · 3 km deep · 42 km away · felt by 1
  49. 2.85 km WNW of Medford, Oklahoma · 3991 days ago · 5 km deep · 41 km away
  50. 3.08 km NE of Marshall, Oklahoma · 3991 days ago · 5 km deep · 92 km away · felt by 1
  51. 2.612 km SSE of Milan, Kansas · 3991 days ago · 5 km deep · 67 km away · felt by 7
  52. 1.78 km SW of Bluff City, Kansas · 3991 days ago · 7 km deep · 35 km away
  53. 1.58 km SW of Bluff City, Kansas · 3991 days ago · 6 km deep · 35 km away
  54. 2.85 km W of Lucien, Oklahoma · 3991 days ago · 8 km deep · 90 km away
  55. 3.37 km SE of Avard, Oklahoma · 3991 days ago · 4 km deep · 46 km away
  56. 1.59 km N of Caldwell, Kansas · 3991 days ago · 4 km deep · 65 km away
  57. 2.07 km ENE of Caldwell, Kansas · 3990 days ago · 6 km deep · 69 km away · felt by 2
  58. 2.511 km NE of Nash, Oklahoma · 3990 days ago · 6 km deep · 30 km away
  59. 2.88 km N of Hunter, Oklahoma · 3990 days ago · 5 km deep · 56 km away
  60. 3.18 km ESE of Jefferson, Oklahoma · 3990 days ago · 0 km deep · 52 km away

The first 60 of at least 202.

Before

  1. 1.78 km SSE of Milan, Kansas · 3997 days ago · 5 km deep · 68 km away
  2. 1.97 km ENE of Caldwell, Kansas · 3997 days ago · 6 km deep · 70 km away
  3. 2.63 km SW of Fairmont, Oklahoma · 3997 days ago · 6 km deep · 73 km away
  4. 1.66 km S of Argonia, Kansas · 3997 days ago · 6 km deep · 61 km away
  5. 1.86 km S of Argonia, Kansas · 3997 days ago · 6 km deep · 61 km away
  6. 2.36 km S of Argonia, Kansas · 3997 days ago · 6 km deep · 61 km away
  7. 2.85 km NE of Nescatunga, Oklahoma · 3997 days ago · 5 km deep · 15 km away
  8. 1.67 km SE of Harper, Kansas · 3997 days ago · 5 km deep · 51 km away
  9. 1.76 km WSW of Bluff City, Kansas · 3998 days ago · 6 km deep · 37 km away
  10. 1.98 km SSE of Milan, Kansas · 3998 days ago · 5 km deep · 68 km away
  11. 2.52 km ESE of Covington, Oklahoma · 3998 days ago · 5 km deep · 86 km away · felt by 1
  12. 2.02 km NE of Freeport, Kansas · 3998 days ago · 4 km deep · 57 km away
  13. 2.36 km S of Argonia, Kansas · 3998 days ago · 6 km deep · 61 km away
  14. 2.810 km NE of Wakita, Oklahoma · 3998 days ago · 1 km deep · 40 km away
  15. 1.98 km WSW of Hunnewell, Kansas · 3998 days ago · 5 km deep · 70 km away
  16. 1.65 km WSW of Bluff City, Kansas · 3999 days ago · 5 km deep · 38 km away
  17. 3.22 km S of Renfrow, Oklahoma · 3999 days ago · 5 km deep · 54 km away · felt by 7
  18. 2.84 km SE of Lucien, Oklahoma · 3999 days ago · 8 km deep · 100 km away · felt by 1
  19. 2.87 km NNW of Ames, Oklahoma · 3999 days ago · 6 km deep · 59 km away
  20. 2.15 km WSW of Bluff City, Kansas · 3999 days ago · 6 km deep · 38 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10003q8m. Read Wed, Sep 30, 2026, 1:56 PM UTC.