California earthquakes

M1.7 earthquake 14km SW of Coronado, CA

A magnitude 1.7 earthquake struck 14km SW of Coronado, CA on Tue, Jul 27, 2021, 11:16 AM PDT (18:16 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.7 2km WNW of Lake Henshaw, CA. This one was a foreshock.

Coronado forecastMore in California

Map

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
2021-07-27 18:16:35 UTC
Depth
17.7 km (11.0 mi), shallow
Epicenter
32.597° N, 117.290° 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 0.6 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
238°, poorly surrounded by stations
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.86km ESE of Palomar Observatory, CA · 1894 days ago · 9 km deep · 94 km away
  2. 2.743km WSW of Encinitas, CA · 1892 days ago · 14 km deep · 57 km away · felt by 5
  3. 1.527km SE of Campo, CA · 1892 days ago · 13 km deep · 95 km away
  4. 1.84km N of Pine Valley, CA · 1890 days ago · 13 km deep · 77 km away
  5. 1.913km W of Carlsbad, CA · 1887 days ago · 13 km deep · 63 km away
  6. 2.55km WSW of Primo Tapia, B.C., MX · 1885 days ago · 15 km deep · 53 km away
  7. 1.69km SE of Julian, CA · 1867 days ago · 13 km deep · 86 km away
  8. 1.925km SE of Campo, CA · 1866 days ago · 18 km deep · 98 km away
  9. 2.139km WSW of Encinitas, CA · 1863 days ago · 15 km deep · 56 km away
  10. 2.319km SW of Primo Tapia, B.C., MX · 1859 days ago · 20 km deep · 61 km away
  11. 2.72km WNW of Lake Henshaw, CA · 1853 days ago · 6 km deep · 87 km away · felt by 7
  12. 1.721km E of Julian, CA · 1852 days ago · 12 km deep · 99 km away
  13. 1.618km NNE of Pine Valley, CA · 1850 days ago · 5 km deep · 89 km away
  14. 1.737km SSE of Campo, CA · 1848 days ago · 16 km deep · 94 km away
  15. 1.629km WSW of Camp Pendleton South, CA · 1845 days ago · 11 km deep · 67 km away
  16. 1.511km NW of Julian, CA · 1837 days ago · 18 km deep · 82 km away
  17. 1.634km SSE of Campo, CA · 1835 days ago · 13 km deep · 99 km away

Before

  1. 2.945km SSE of San Clemente Is. (SE tip), CA · 1897 days ago · 25 km deep · 87 km away · felt by 2
  2. 1.92km NW of Lake Henshaw, CA · 1897 days ago · 7 km deep · 87 km away
  3. 1.623km SE of Campo, CA · 1899 days ago · 18 km deep · 96 km away
  4. 1.617km ESE of Julian, CA · 1906 days ago · 9 km deep · 94 km away
  5. 1.66km WSW of Aguanga, CA · 1906 days ago · 9 km deep · 98 km away
  6. 1.619km NE of Pine Valley, CA · 1911 days ago · 12 km deep · 94 km away
  7. 1.98km SSE of Palomar Observatory, CA · 1911 days ago · 13 km deep · 88 km away
  8. 1.714km W of Coronado, CA · 1921 days ago · 14 km deep · 9 km away
  9. 1.814km SE of Julian, CA · 1923 days ago · 7 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39755071. Read Sun, Oct 4, 2026, 6:01 AM UTC.