M1.7 earthquake 6km NW of Corona, CA
A magnitude 1.7 earthquake struck 6km NW of Corona, CA on Thu, Jul 22, 2021, 11:26 AM PDT (18:26 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M4.3 2km E of Carson, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (ML, local (Richter)), micro
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 2021-07-22 18:26:28 UTC
- Depth
- 6.9 km (4.3 mi), shallow
- Epicenter
- 33.910° N, 117.610° W
- Region
- California
- 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 0.1 km horizontally, 0.3 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- From location
- Station coverage gap
- 35°
- Stations used
- 53
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 97 in the 60 days after this one and 45 in the 30 days before it.
After
- 1.910km SW of Idyllwild, CA · 1899 days ago · 17 km deep · 80 km away
- 2.54km SE of Ontario, CA · 1899 days ago · 16 km deep · 13 km away · felt by 6
- 1.95km SW of Idyllwild, CA · 1899 days ago · 17 km deep · 82 km away
- 1.622km SSW of Seal Beach, CA · 1899 days ago · 13 km deep · 65 km away
- 1.61km NNW of South Gate, CA · 1896 days ago · 13 km deep · 56 km away
- 1.510km SSW of Idyllwild, CA · 1896 days ago · 13 km deep · 85 km away
- 1.69km S of Idyllwild, CA · 1896 days ago · 12 km deep · 86 km away
- 2.10km W of Brea, CA · 1894 days ago · 8 km deep · 27 km away · felt by 4
- 1.86km ESE of Palomar Observatory, CA · 1894 days ago · 9 km deep · 98 km away
- 2.014km ENE of Yucaipa, CA · 1892 days ago · 8 km deep · 68 km away · felt by 1
- 1.511km ENE of Yucaipa, CA · 1891 days ago · 13 km deep · 65 km away
- 3.04km SW of Redlands, CA · 1891 days ago · 15 km deep · 39 km away · felt by 153
- 1.62km ENE of Colton, CA · 1891 days ago · 16 km deep · 34 km away · felt by 1
- 2.06km S of Redlands, CA · 1890 days ago · 14 km deep · 40 km away
- 1.910km WSW of Morongo Valley, CA · 1889 days ago · 13 km deep · 86 km away
- 1.910km SSW of Rancho Palos Verdes, CA · 1888 days ago · 0 km deep · 80 km away
- 1.51km E of Beaumont, CA · 1887 days ago · 16 km deep · 59 km away
- 1.913km W of Carlsbad, CA · 1887 days ago · 13 km deep · 87 km away
- 1.52km WSW of Costa Mesa, CA · 1887 days ago · 10 km deep · 41 km away
- 1.711km SSE of Big Bear Lake, CA · 1887 days ago · 7 km deep · 72 km away
- 2.79km NNW of Big Bear City, CA · 1886 days ago · 2 km deep · 83 km away · felt by 9
- 3.12km NW of Hemet, CA · 1886 days ago · 17 km deep · 60 km away · felt by 573
- 1.95km N of Beaumont, CA · 1886 days ago · 13 km deep · 58 km away
- 1.63km S of Mentone, CA · 1885 days ago · 13 km deep · 46 km away
- 1.65km WNW of Muscoy, CA · 1885 days ago · 11 km deep · 36 km away
- 1.710km S of Idyllwild, CA · 1884 days ago · 18 km deep · 89 km away
- 2.26km SE of Valle Vista, CA · 1884 days ago · 16 km deep · 74 km away · felt by 6
- 1.76km S of Calimesa, CA · 1883 days ago · 4 km deep · 51 km away
- 1.86km NW of Desert Hot Springs, CA · 1883 days ago · 10 km deep · 97 km away
- 1.56km SSW of Redlands, CA · 1880 days ago · 14 km deep · 39 km away
- 1.76km ESE of Cabazon, CA · 1880 days ago · 16 km deep · 81 km away · felt by 1
- 2.013km SSE of Malibu Beach, CA · 1880 days ago · 10 km deep · 97 km away
- 2.53km WSW of Fontana, CA · 1878 days ago · 9 km deep · 22 km away · felt by 83
- 1.68km ESE of Valle Vista, CA · 1878 days ago · 17 km deep · 76 km away
- 2.45km S of Redlands, CA · 1877 days ago · 14 km deep · 41 km away
- 1.81km NNW of La Puente, CA · 1874 days ago · 9 km deep · 34 km away
- 2.36km NNE of Beaumont, CA · 1874 days ago · 16 km deep · 60 km away
- 1.55km NNE of Fontana, CA · 1873 days ago · 7 km deep · 30 km away
- 2.213km NNE of Cabazon, CA · 1872 days ago · 10 km deep · 81 km away · felt by 1
- 1.817km S of Big Bear City, CA · 1872 days ago · 6 km deep · 76 km away
- 1.64km N of Rancho Cucamonga, CA · 1869 days ago · 11 km deep · 28 km away
- 1.510km S of Idyllwild, CA · 1869 days ago · 15 km deep · 87 km away
- 1.916km NNE of Avalon, CA · 1868 days ago · 17 km deep · 76 km away
- 1.94km NE of Temecula, CA · 1868 days ago · 9 km deep · 62 km away
- 1.710km NE of Aguanga, CA · 1867 days ago · 4 km deep · 90 km away
- 1.83km SSE of Devore, CA · 1867 days ago · 12 km deep · 38 km away
- 2.34km NE of Beaumont, CA · 1865 days ago · 14 km deep · 61 km away · felt by 1
- 1.83km SSE of Garden Grove, CA · 1862 days ago · 15 km deep · 36 km away
- 1.614km WNW of Anza, CA · 1862 days ago · 5 km deep · 82 km away
- 1.67km S of Idyllwild, CA · 1862 days ago · 14 km deep · 86 km away
- 1.56km S of Pearblossom, CA · 1862 days ago · 9 km deep · 66 km away · felt by 1
- 1.84km NW of Silver Lake, CA · 1861 days ago · 11 km deep · 67 km away · felt by 3
- 1.64km N of Fontana, CA · 1861 days ago · 6 km deep · 29 km away · felt by 2
- 1.74km N of Fontana, CA · 1861 days ago · 7 km deep · 29 km away
- 1.72km ESE of Loma Linda, CA · 1860 days ago · 14 km deep · 37 km away
- 1.914km WNW of Anza, CA · 1860 days ago · 5 km deep · 82 km away
- 2.03km E of Loma Linda, CA · 1858 days ago · 14 km deep · 39 km away
- 1.75km NNW of Beaumont, CA · 1858 days ago · 16 km deep · 56 km away
- 1.914km NE of Big Bear City, CA · 1857 days ago · 3 km deep · 94 km away
- 1.67km NW of Big Bear City, CA · 1857 days ago · 9 km deep · 80 km away
The first 60 of 97.
Before
- 2.09km WSW of Lytle Creek, CA · 1900 days ago · 6 km deep · 35 km away · felt by 1
- 1.93km WSW of Compton, CA · 1901 days ago · 12 km deep · 59 km away
- 1.75km ENE of Villa Park, CA · 1902 days ago · 8 km deep · 16 km away
- 1.612km E of Yucaipa, CA · 1902 days ago · 18 km deep · 66 km away
- 1.911km SSE of Big Bear Lake, CA · 1903 days ago · 7 km deep · 72 km away
- 1.811km NNE of Trabuco Canyon, CA · 1903 days ago · 8 km deep · 19 km away
- 1.78km E of Yorba Linda, CA · 1904 days ago · 6 km deep · 11 km away
- 1.59km N of Cabazon, CA · 1905 days ago · 9 km deep · 76 km away
- 1.96km E of Calimesa, CA · 1906 days ago · 17 km deep · 58 km away
- 1.66km WSW of Aguanga, CA · 1906 days ago · 9 km deep · 83 km away
- 1.89km SSE of Cabazon, CA · 1908 days ago · 14 km deep · 80 km away
- 2.13km SW of Morongo Valley, CA · 1908 days ago · 10 km deep · 93 km away
- 1.65km NNE of Running Springs, CA · 1909 days ago · 5 km deep · 61 km away
- 1.57km NW of Rancho Cucamonga, CA · 1909 days ago · 9 km deep · 29 km away
- 2.45km NNE of Running Springs, CA · 1909 days ago · 5 km deep · 60 km away
- 1.55km NW of Fontana, CA · 1910 days ago · 6 km deep · 27 km away
- 1.61km N of Loma Linda, CA · 1910 days ago · 16 km deep · 36 km away
- 1.85km NNW of Fontana, CA · 1911 days ago · 5 km deep · 27 km away
- 1.98km SSE of Palomar Observatory, CA · 1911 days ago · 13 km deep · 99 km away
- 1.96km SW of Fontana, CA · 1912 days ago · 6 km deep · 20 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci39749951. Read Sun, Oct 4, 2026, 3:02 AM UTC.