M1.6 earthquake 75 km SE of Adak, Alaska
A magnitude 1.6 earthquake struck 75 km SE of Adak, Alaska on Wed, Aug 25, 2021, 11:19 AM HADT (20:19 UTC), 18 km (11 mi) below the surface.
A larger quake followed: M4.9 81 km S of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (ml), micro
- Local time
- UTC
- 2021-08-25 20:19:55 UTC
- Depth
- 17.5 km (10.9 mi), shallow
- Epicenter
- 51.441° N, 175.796° W
- Region
- Alaska
- 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.
- Stations used
- 17
Nearby
Within 100 km, magnitude 1.5 and up: 112 in the 60 days after this one and 93 in the 30 days before it.
After
- 3.668 km ESE of Adak, Alaska · 1855 days ago · 35 km deep · 13 km away
- 1.829 km SSE of Adak, Alaska · 1855 days ago · 45 km deep · 50 km away
- 1.9170 km SE of Adak, Alaska · 1855 days ago · 10 km deep · 98 km away
- 1.662 km SE of Adak, Alaska · 1855 days ago · 26 km deep · 21 km away
- 1.6Andreanof Islands, Aleutian Islands, Alaska · 1855 days ago · 15 km deep · 65 km away
- 1.665 km SSW of Adak, Alaska · 1855 days ago · 48 km deep · 93 km away
- 2.062 km SSW of Adak, Alaska · 1855 days ago · 29 km deep · 89 km away
- 1.773 km WSW of Atka, Alaska · 1855 days ago · 73 km deep · 73 km away
- 1.796 km ESE of Adak, Alaska · 1854 days ago · 29 km deep · 39 km away
- 1.543 km SW of Adak, Alaska · 1854 days ago · 64 km deep · 91 km away
- 3.534 km S of Adak, Alaska · 1853 days ago · 46 km deep · 55 km away
- 1.942 km NE of Adak, Alaska · 1853 days ago · 189 km deep · 82 km away
- 1.689 km SE of Adak, Alaska · 1852 days ago · 26 km deep · 14 km away
- 1.578 km W of Atka, Alaska · 1852 days ago · 110 km deep · 79 km away
- 1.758 km SSE of Adak, Alaska · 1852 days ago · 24 km deep · 39 km away
- 1.772 km WSW of Atka, Alaska · 1852 days ago · 122 km deep · 78 km away
- 1.658 km SE of Adak, Alaska · 1852 days ago · 33 km deep · 17 km away
- 1.748 km E of Adak, Alaska · 1851 days ago · 149 km deep · 44 km away
- 2.717 km SE of Adak, Alaska · 1850 days ago · 112 km deep · 59 km away
- 3.684 km E of Adak, Alaska · 1850 days ago · 64 km deep · 49 km away
- 1.676 km ESE of Adak, Alaska · 1850 days ago · 19 km deep · 37 km away
- 1.979 km SSW of Adak, Alaska · 1850 days ago · 28 km deep · 94 km away
- 3.246 km ENE of Adak, Alaska · 1849 days ago · 137 km deep · 70 km away
- 3.262 km SE of Adak, Alaska · 1848 days ago · 26 km deep · 23 km away
- 2.958 km E of Adak, Alaska · 1848 days ago · 156 km deep · 59 km away
- 1.641 km SSE of Adak, Alaska · 1848 days ago · 34 km deep · 41 km away
- 1.652 km ENE of Adak, Alaska · 1848 days ago · 148 km deep · 63 km away
- 1.512 km SE of Adak, Alaska · 1848 days ago · 153 km deep · 63 km away
- 1.558 km SE of Adak, Alaska · 1847 days ago · 48 km deep · 18 km away
- 1.710 km SSE of Adak, Alaska · 1847 days ago · 156 km deep · 66 km away
- 1.992 km SSE of Adak, Alaska · 1847 days ago · 14 km deep · 48 km away
- 1.560 km SE of Adak, Alaska · 1846 days ago · 27 km deep · 15 km away
- 2.588 km ESE of Adak, Alaska · 1846 days ago · 58 km deep · 42 km away
- 1.933 km ESE of Adak, Alaska · 1845 days ago · 61 km deep · 42 km away
- 1.570 km SSE of Adak, Alaska · 1845 days ago · 18 km deep · 35 km away
- 1.951 km ENE of Adak, Alaska · 1845 days ago · 163 km deep · 72 km away
- 1.674 km ENE of Adak, Alaska · 1844 days ago · 149 km deep · 71 km away
- 1.561 km W of Atka, Alaska · 1844 days ago · 13 km deep · 90 km away
- 3.367 km ESE of Adak, Alaska · 1844 days ago · 39 km deep · 12 km away
- 1.774 km ENE of Adak, Alaska · 1843 days ago · 137 km deep · 71 km away
- 1.960 km ENE of Adak, Alaska · 1843 days ago · 150 km deep · 71 km away
- 1.663 km SSE of Adak, Alaska · 1843 days ago · 19 km deep · 30 km away
- 1.7111 km S of Adak, Alaska · 1843 days ago · 35 km deep · 99 km away
- 1.962 km SE of Adak, Alaska · 1843 days ago · 26 km deep · 18 km away
- 1.649 km SW of Adak, Alaska · 1842 days ago · 44 km deep · 91 km away
- 2.278 km ENE of Adak, Alaska · 1842 days ago · 236 km deep · 77 km away
- 1.739 km NE of Adak, Alaska · 1842 days ago · 132 km deep · 80 km away
- 2.7105 km SSE of Adak, Alaska · 1842 days ago · 10 km deep · 66 km away
- 1.972 km SSW of Atka, Alaska · 1841 days ago · 22 km deep · 79 km away
- 1.651 km E of Adak, Alaska · 1841 days ago · 93 km deep · 57 km away
- 3.689 km SW of Atka, Alaska · 1840 days ago · 35 km deep · 54 km away
- 3.7101 km ESE of Adak, Alaska · 1840 days ago · 35 km deep · 31 km away
- 2.957 km SSE of Adak, Alaska · 1838 days ago · 35 km deep · 27 km away
- 1.553 km SW of Adak, Alaska · 1837 days ago · 46 km deep · 96 km away
- 1.756 km SE of Adak, Alaska · 1835 days ago · 13 km deep · 26 km away
- 1.660 km SE of Adak, Alaska · 1835 days ago · 13 km deep · 23 km away
- 3.0135 km SSW of Atka, Alaska · 1833 days ago · 14 km deep · 76 km away
- 3.224 km SSW of Adak, Alaska · 1833 days ago · 77 km deep · 68 km away
- 1.644 km SSW of Adak, Alaska · 1830 days ago · 36 km deep · 67 km away
- 1.777 km SE of Adak, Alaska · 1830 days ago · 23 km deep · 6 km away
The first 60 of 112.
Before
- 1.871 km E of Adak, Alaska · 1856 days ago · 149 km deep · 50 km away
- 2.020 km WSW of Adak, Alaska · 1856 days ago · 77 km deep · 89 km away
- 1.696 km ESE of Adak, Alaska · 1856 days ago · 26 km deep · 41 km away
- 2.938 km SSW of Adak, Alaska · 1857 days ago · 39 km deep · 77 km away
- 1.645 km E of Adak, Alaska · 1857 days ago · 68 km deep · 43 km away
- 1.657 km ENE of Adak, Alaska · 1858 days ago · 175 km deep · 76 km away
- 1.980 km SE of Adak, Alaska · 1858 days ago · 26 km deep · 5 km away
- 3.067 km E of Adak, Alaska · 1858 days ago · 71 km deep · 45 km away
- 1.664 km ENE of Adak, Alaska · 1859 days ago · 12 km deep · 71 km away
- 1.915 km NE of Adak, Alaska · 1859 days ago · 151 km deep · 76 km away
- 2.687 km S of Adak, Alaska · 1859 days ago · 35 km deep · 84 km away
- 3.2Andreanof Islands, Aleutian Islands, Alaska · 1859 days ago · 35 km deep · 74 km away
- 3.064 km SSW of Adak, Alaska · 1859 days ago · 35 km deep · 84 km away
- 1.610 km SW of Adak, Alaska · 1860 days ago · 81 km deep · 76 km away
- 1.742 km SW of Atka, Alaska · 1860 days ago · 53 km deep · 97 km away
- 3.464 km SE of Adak, Alaska · 1861 days ago · 35 km deep · 12 km away
- 1.863 km W of Atka, Alaska · 1862 days ago · 170 km deep · 98 km away
- 2.053 km ENE of Adak, Alaska · 1862 days ago · 146 km deep · 69 km away
- 1.572 km SSE of Adak, Alaska · 1862 days ago · 21 km deep · 41 km away
- 1.573 km WSW of Atka, Alaska · 1863 days ago · 64 km deep · 69 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak021awae3zi. Read Thu, Sep 24, 2026, 10:46 AM UTC.