Oklahoma earthquakes

M3.5 earthquake 7 km W of Arcadia, Oklahoma

A magnitude 3.5 earthquake struck 7 km W of Arcadia, Oklahoma on Sat, Apr 7, 2018, 11:21 AM CDT (16:21 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.6 8 km NNE of Marshall, Oklahoma. This one was a foreshock.

Edmond 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
3.5 (ml), minor
Local time
UTC
2018-04-07 16:21:21 UTC
Depth
6.9 km (4.3 mi), shallow
Epicenter
35.672° N, 97.404° W
Region
Oklahoma
Felt reports
99
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
IV, light shaking
Peak ground acceleration
1481.0% of gravity
Peak ground velocity
0.2 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

99 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.0 km horizontally, 3.0 km in depth
Station coverage gap
20°
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: 75 in the 60 days after this one and 40 in the 30 days before it.

After

  1. 2.64 km ESE of Covington, Oklahoma · 3089 days ago · 7 km deep · 71 km away
  2. 2.25 km ESE of Covington, Oklahoma · 3089 days ago · 6 km deep · 70 km away
  3. 2.56 km ESE of Covington, Oklahoma · 3089 days ago · 6 km deep · 70 km away
  4. 2.85 km WNW of Lucien, Oklahoma · 3088 days ago · 7 km deep · 70 km away
  5. 3.15 km ESE of Covington, Oklahoma · 3088 days ago · 7 km deep · 71 km away · felt by 4
  6. 3.18 km NE of Marshall, Oklahoma · 3088 days ago · 6 km deep · 62 km away · felt by 24
  7. 4.68 km NNE of Marshall, Oklahoma · 3088 days ago · 5 km deep · 63 km away · felt by 2,651
  8. 2.98 km NE of Marshall, Oklahoma · 3087 days ago · 5 km deep · 62 km away · felt by 15
  9. 2.44 km ENE of Covington, Oklahoma · 3087 days ago · 6 km deep · 74 km away
  10. 2.35 km ESE of Covington, Oklahoma · 3087 days ago · 5 km deep · 70 km away · felt by 7
  11. 2.68 km SW of Perry, Oklahoma · 3086 days ago · 8 km deep · 62 km away · felt by 2
  12. 2.44 km W of Lucien, Oklahoma · 3085 days ago · 5 km deep · 68 km away · felt by 1
  13. 2.05 km WNW of Lucien, Oklahoma · 3085 days ago · 6 km deep · 70 km away · felt by 1
  14. 2.73 km WNW of Lucien, Oklahoma · 3085 days ago · 8 km deep · 69 km away · felt by 3
  15. 1.84 km W of Lucien, Oklahoma · 3083 days ago · 4 km deep · 67 km away
  16. 2.34 km W of Lucien, Oklahoma · 3083 days ago · 6 km deep · 68 km away · felt by 2
  17. 1.84 km WNW of Lucien, Oklahoma · 3083 days ago · 6 km deep · 69 km away
  18. 2.38 km SE of Dibble, Oklahoma · 3083 days ago · 6 km deep · 78 km away · felt by 4
  19. 1.84 km WNW of Lucien, Oklahoma · 3082 days ago · 5 km deep · 69 km away
  20. 2.44 km ESE of Covington, Oklahoma · 3082 days ago · 7 km deep · 71 km away · felt by 2
  21. 1.66 km N of Union City, Oklahoma · 3082 days ago · 5 km deep · 54 km away
  22. 2.49 km NE of Marshall, Oklahoma · 3081 days ago · 4 km deep · 63 km away
  23. 2.410 km N of Stillwater, Oklahoma · 3080 days ago · 7 km deep · 68 km away · felt by 4
  24. 1.812 km SE of Dibble, Oklahoma · 3079 days ago · 5 km deep · 80 km away
  25. 1.95 km W of Lucien, Oklahoma · 3079 days ago · 6 km deep · 68 km away
  26. 3.56 km N of Dover, Oklahoma · 3078 days ago · 6 km deep · 61 km away · felt by 6
  27. 3.16 km N of Dover, Oklahoma · 3078 days ago · 6 km deep · 61 km away · felt by 6
  28. 1.75 km W of Lucien, Oklahoma · 3077 days ago · 5 km deep · 68 km away
  29. 1.84 km W of Lucien, Oklahoma · 3077 days ago · 4 km deep · 68 km away
  30. 3.013 km ESE of Orlando, Oklahoma · 3075 days ago · 5 km deep · 53 km away · felt by 6
  31. 2.55 km WNW of Lucien, Oklahoma · 3074 days ago · 6 km deep · 70 km away · felt by 2
  32. 1.812 km S of Cedar Valley, Oklahoma · 3073 days ago · 9 km deep · 15 km away
  33. 2.39 km W of Orlando, Oklahoma · 3072 days ago · 7 km deep · 54 km away
  34. 1.65 km NNW of Breckinridge, Oklahoma · 3071 days ago · 3 km deep · 95 km away
  35. 2.2Oklahoma · 3071 days ago · 5 km deep · 52 km away
  36. 2.413 km WSW of Ralston, Oklahoma · 3071 days ago · 4 km deep · 100 km away
  37. 2.513 km W of Union City, Oklahoma · 3071 days ago · 6 km deep · 70 km away · felt by 3
  38. 3.05 km E of Hennessey, Oklahoma · 3069 days ago · 5 km deep · 62 km away · felt by 3
  39. 2.65 km E of Hennessey, Oklahoma · 3069 days ago · 7 km deep · 62 km away
  40. 2.96 km ENE of Edmond, Oklahoma · 3061 days ago · 5 km deep · 1 km away · felt by 40
  41. 2.64 km NE of Coyle, Oklahoma · 3059 days ago · 5 km deep · 39 km away · felt by 3
  42. 2.514 km W of Union City, Oklahoma · 3057 days ago · 8 km deep · 70 km away
  43. 2.84 km W of Lucien, Oklahoma · 3055 days ago · 7 km deep · 68 km away
  44. 3.710 km SSE of Marshall, Oklahoma · 3053 days ago · 7 km deep · 47 km away · felt by 122
  45. 2.810 km SSE of Marshall, Oklahoma · 3053 days ago · 8 km deep · 47 km away · felt by 3
  46. 3.010 km SSE of Marshall, Oklahoma · 3053 days ago · 8 km deep · 47 km away
  47. 2.510 km SSE of Marshall, Oklahoma · 3053 days ago · 7 km deep · 47 km away
  48. 2.510 km SSE of Marshall, Oklahoma · 3053 days ago · 8 km deep · 47 km away
  49. 4.010 km SSE of Marshall, Oklahoma · 3053 days ago · 7 km deep · 47 km away · felt by 182
  50. 2.610 km SSE of Marshall, Oklahoma · 3053 days ago · 8 km deep · 47 km away · felt by 1
  51. 3.010 km SSE of Marshall, Oklahoma · 3053 days ago · 8 km deep · 47 km away · felt by 11
  52. 2.310 km SSE of Marshall, Oklahoma · 3053 days ago · 7 km deep · 47 km away
  53. 2.910 km SSE of Marshall, Oklahoma · 3052 days ago · 7 km deep · 47 km away · felt by 6
  54. 2.410 km SSE of Marshall, Oklahoma · 3051 days ago · 7 km deep · 47 km away · felt by 1
  55. 4.010 km SSE of Marshall, Oklahoma · 3051 days ago · 6 km deep · 47 km away · felt by 117
  56. 2.810 km SSE of Marshall, Oklahoma · 3051 days ago · 7 km deep · 47 km away
  57. 2.610 km SE of Marshall, Oklahoma · 3051 days ago · 7 km deep · 47 km away · felt by 1
  58. 2.710 km SSE of Marshall, Oklahoma · 3051 days ago · 7 km deep · 47 km away
  59. 2.610 km SSE of Marshall, Oklahoma · 3050 days ago · 7 km deep · 47 km away · felt by 2
  60. 2.11 km SE of Choctaw, Oklahoma · 3050 days ago · 5 km deep · 25 km away · felt by 1

The first 60 of 75.

Before

  1. 2.23 km ESE of Bridge Creek, Oklahoma · 3089 days ago · 6 km deep · 56 km away · felt by 5
  2. 2.55 km WNW of Lucien, Oklahoma · 3089 days ago · 6 km deep · 70 km away · felt by 2
  3. 3.75 km WNW of Lucien, Oklahoma · 3089 days ago · 7 km deep · 69 km away
  4. 4.65 km WNW of Lucien, Oklahoma · 3089 days ago · 6 km deep · 69 km away · felt by 1,498
  5. 2.78 km NE of Marshall, Oklahoma · 3090 days ago · 6 km deep · 62 km away
  6. 2.68 km NE of Marshall, Oklahoma · 3090 days ago · 6 km deep · 62 km away · felt by 1
  7. 2.58 km NNE of Marshall, Oklahoma · 3090 days ago · 5 km deep · 63 km away
  8. 3.38 km NNE of Marshall, Oklahoma · 3090 days ago · 6 km deep · 63 km away · felt by 2
  9. 2.85 km WNW of Lucien, Oklahoma · 3090 days ago · 7 km deep · 70 km away
  10. 2.56 km WNW of Lucien, Oklahoma · 3090 days ago · 7 km deep · 70 km away
  11. 3.05 km WNW of Lucien, Oklahoma · 3090 days ago · 8 km deep · 69 km away · felt by 1
  12. 3.95 km WNW of Lucien, Oklahoma · 3090 days ago · 6 km deep · 69 km away · felt by 38
  13. 3.04 km W of Lucien, Oklahoma · 3090 days ago · 8 km deep · 69 km away
  14. 2.69 km NW of Pawnee, Oklahoma · 3093 days ago · 5 km deep · 95 km away · felt by 1
  15. 3.110 km SE of Marshall, Oklahoma · 3094 days ago · 6 km deep · 48 km away
  16. 2.59 km N of Stillwater, Oklahoma · 3094 days ago · 3 km deep · 67 km away · felt by 19
  17. 2.67 km NNW of Tuttle, Oklahoma · 3095 days ago · 6 km deep · 54 km away · felt by 7
  18. 2.513 km WSW of Ralston, Oklahoma · 3095 days ago · 5 km deep · 100 km away
  19. 2.48 km SSE of Sparks, Oklahoma · 3096 days ago · 7 km deep · 59 km away · felt by 2
  20. 2.610 km SE of Marshall, Oklahoma · 3096 days ago · 6 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000dw3h. Read Mon, Sep 21, 2026, 11:36 PM UTC.