California earthquakes

M1.7 earthquake 14km SSW of Seal Beach, CA

A magnitude 1.7 earthquake struck 14km SSW of Seal Beach, CA on Sun, May 9, 2021, 9:22 AM PDT (16:22 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.4 4km NNW of Fontana, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-05-09 16:22:33 UTC
Depth
11.9 km (7.4 mi), shallow
Epicenter
33.615° N, 118.140° W
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 0.5 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
181°, poorly surrounded by stations
Stations used
44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 77 in the 60 days after this one and 37 in the 30 days before it.

After

  1. 1.64km SE of Chino Hills, CA · 1973 days ago · 14 km deep · 54 km away
  2. 2.14km SE of Loma Linda, CA · 1973 days ago · 17 km deep · 96 km away · felt by 2
  3. 1.54km SE of Loma Linda, CA · 1972 days ago · 15 km deep · 96 km away
  4. 1.86km NNE of Fontana, CA · 1971 days ago · 11 km deep · 88 km away
  5. 2.07km NNE of Fontana, CA · 1971 days ago · 11 km deep · 89 km away · felt by 2
  6. 1.57km SSE of Littlerock, CA · 1971 days ago · 9 km deep · 95 km away
  7. 1.67km NNW of Mira Loma, CA · 1968 days ago · 12 km deep · 72 km away
  8. 1.511km E of Yorba Linda, CA · 1967 days ago · 8 km deep · 50 km away
  9. 1.64km SW of Rancho Cucamonga, CA · 1967 days ago · 12 km deep · 73 km away
  10. 1.51km NNE of Loma Linda, CA · 1964 days ago · 17 km deep · 95 km away
  11. 2.02km ENE of Granada Hills, CA · 1963 days ago · 11 km deep · 80 km away · felt by 4
  12. 1.97km SW of Pearblossom, CA · 1962 days ago · 8 km deep · 96 km away
  13. 1.82km SW of San Fernando, CA · 1958 days ago · 10 km deep · 79 km away
  14. 1.62km SW of San Fernando, CA · 1958 days ago · 11 km deep · 79 km away
  15. 2.111km E of Yorba Linda, CA · 1958 days ago · 10 km deep · 50 km away · felt by 1
  16. 2.63km E of Anaheim, CA · 1956 days ago · 5 km deep · 36 km away · felt by 419
  17. 2.14km E of Anaheim, CA · 1956 days ago · 6 km deep · 36 km away · felt by 52
  18. 1.54km E of Anaheim, CA · 1956 days ago · 5 km deep · 37 km away
  19. 1.54km E of Anaheim, CA · 1956 days ago · 5 km deep · 36 km away
  20. 2.27km SW of Pearblossom, CA · 1954 days ago · 8 km deep · 96 km away · felt by 2
  21. 2.73km E of Anaheim, CA · 1953 days ago · 5 km deep · 36 km away · felt by 384
  22. 1.73km E of Anaheim, CA · 1953 days ago · 5 km deep · 36 km away
  23. 2.04km NW of Villa Park, CA · 1953 days ago · 4 km deep · 37 km away · felt by 12
  24. 2.911km S of Malibu Beach, CA · 1953 days ago · 14 km deep · 60 km away · felt by 109
  25. 1.64km SE of Loma Linda, CA · 1952 days ago · 10 km deep · 95 km away
  26. 1.84km SE of Loma Linda, CA · 1952 days ago · 11 km deep · 96 km away
  27. 1.711km E of Yorba Linda, CA · 1951 days ago · 9 km deep · 50 km away
  28. 1.94km ESE of Gardena, CA · 1951 days ago · 15 km deep · 32 km away
  29. 1.63km E of Gardena, CA · 1951 days ago · 13 km deep · 32 km away
  30. 1.79km E of Moreno Valley, CA · 1951 days ago · 18 km deep · 99 km away
  31. 1.77km ENE of Yorba Linda, CA · 1948 days ago · 10 km deep · 50 km away
  32. 1.92km SSW of Rancho Cucamonga, CA · 1948 days ago · 10 km deep · 75 km away
  33. 2.23km WSW of Rubidoux, CA · 1947 days ago · 16 km deep · 77 km away · felt by 1
  34. 1.73km E of Anaheim, CA · 1946 days ago · 5 km deep · 36 km away
  35. 1.83km E of Anaheim, CA · 1946 days ago · 5 km deep · 36 km away · felt by 9
  36. 1.54km SE of Loma Linda, CA · 1946 days ago · 15 km deep · 96 km away
  37. 1.82km WNW of Murrieta, CA · 1944 days ago · 16 km deep · 84 km away
  38. 1.75km SSW of Redlands, CA · 1944 days ago · 16 km deep · 98 km away
  39. 1.91km SW of Sherman Oaks, CA · 1944 days ago · 2 km deep · 66 km away · felt by 110
  40. 1.63km WSW of Yorba Linda, CA · 1944 days ago · 7 km deep · 40 km away · felt by 2
  41. 1.84km SW of Redlands, CA · 1943 days ago · 11 km deep · 97 km away
  42. 1.95km NW of Huntington Beach, CA · 1943 days ago · 14 km deep · 15 km away · felt by 2
  43. 1.811km W of Corona, CA · 1942 days ago · 9 km deep · 50 km away
  44. 1.94km NW of Villa Park, CA · 1942 days ago · 3 km deep · 37 km away · felt by 4
  45. 1.62km WNW of Lennox, CA · 1941 days ago · 13 km deep · 42 km away
  46. 1.62km N of Claremont, CA · 1940 days ago · 4 km deep · 68 km away
  47. 1.84km NW of Villa Park, CA · 1940 days ago · 5 km deep · 37 km away
  48. 1.85km S of Devore, CA · 1939 days ago · 11 km deep · 92 km away
  49. 1.73km WNW of Sylmar, CA · 1939 days ago · 7 km deep · 84 km away
  50. 1.62km SE of Granada Hills, CA · 1938 days ago · 12 km deep · 78 km away
  51. 2.84km WSW of Hermosa Beach, CA · 1935 days ago · 11 km deep · 38 km away · felt by 589
  52. 1.54km SSW of Redlands, CA · 1935 days ago · 6 km deep · 99 km away
  53. 2.05km SW of Sherman Oaks, CA · 1934 days ago · 9 km deep · 64 km away · felt by 12
  54. 1.53km NE of Grand Terrace, CA · 1933 days ago · 17 km deep · 92 km away
  55. 1.920km SW of Huntington Beach, CA · 1932 days ago · 2 km deep · 7 km away · felt by 1
  56. 2.24km NW of Muscoy, CA · 1932 days ago · 12 km deep · 95 km away · felt by 2
  57. 2.410km SSW of Santa Barbara Is., CA · 1931 days ago · 5 km deep · 93 km away · felt by 2
  58. 1.814km W of Malibu, CA · 1929 days ago · 17 km deep · 89 km away
  59. 3.24km NNE of El Segundo, CA · 1929 days ago · 12 km deep · 44 km away · felt by 2,309
  60. 1.52km E of El Segundo, CA · 1929 days ago · 14 km deep · 41 km away

The first 60 of 77.

Before

  1. 2.55km WSW of Hermosa Beach, CA · 1975 days ago · 13 km deep · 38 km away · felt by 156
  2. 3.04km SE of Loma Linda, CA · 1975 days ago · 16 km deep · 95 km away · felt by 187
  3. 3.55km WSW of Hermosa Beach, CA · 1975 days ago · 12 km deep · 38 km away · felt by 2,359
  4. 1.76km WSW of Manhattan Beach, CA · 1976 days ago · 11 km deep · 40 km away
  5. 2.02km N of Lytle Creek, CA · 1977 days ago · 11 km deep · 94 km away
  6. 3.013km S of San Clemente Is. (NW tip), CA · 1978 days ago · 6 km deep · 89 km away · felt by 1
  7. 1.611km ENE of North Tustin, CA · 1978 days ago · 8 km deep · 47 km away
  8. 2.26km NW of Mira Loma, CA · 1978 days ago · 7 km deep · 70 km away · felt by 46
  9. 1.53km E of Fontana, CA · 1979 days ago · 3 km deep · 85 km away
  10. 2.67km WSW of Hermosa Beach, CA · 1980 days ago · 13 km deep · 39 km away · felt by 115
  11. 2.446km SSW of Dana Point, CA · 1981 days ago · 4 km deep · 61 km away
  12. 1.65km NNW of Sylmar, CA · 1981 days ago · 5 km deep · 87 km away
  13. 1.919km S of Malibu, CA · 1982 days ago · 19 km deep · 65 km away
  14. 1.66km SE of Loma Linda, CA · 1983 days ago · 10 km deep · 96 km away
  15. 1.53km NNW of Fontana, CA · 1984 days ago · 4 km deep · 83 km away
  16. 1.63km ESE of Garden Grove, CA · 1984 days ago · 14 km deep · 25 km away
  17. 2.03km NNW of Fontana, CA · 1984 days ago · 5 km deep · 83 km away · felt by 2
  18. 1.61km W of Sierra Madre, CA · 1986 days ago · 9 km deep · 61 km away
  19. 1.90km SW of Lennox, CA · 1987 days ago · 21 km deep · 41 km away
  20. 2.21km N of Lennox, CA · 1987 days ago · 20 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39645967. Read Mon, Oct 5, 2026, 9:15 AM UTC.