M1.8 earthquake 147 km WSW of Adak, Alaska
A magnitude 1.8 earthquake struck 147 km WSW of Adak, Alaska on Sat, Oct 30, 2021, 6:09 AM HADT (15:09 UTC), 29 km (18 mi) below the surface.
A larger quake followed: M3.7 75 km SW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (ml), micro
- Local time
- UTC
- 2021-10-30 15:09:55 UTC
- Depth
- 28.8 km (17.9 mi), shallow
- Epicenter
- 51.245° N, 178.501° 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
- 33
Nearby
Within 100 km, magnitude 1.5 and up: 134 in the 60 days after this one and 58 in the 30 days before it.
After
- 1.8135 km SW of Adak, Alaska · 1789 days ago · 26 km deep · 32 km away
- 3.775 km SW of Adak, Alaska · 1789 days ago · 35 km deep · 81 km away
- 1.6Andreanof Islands, Aleutian Islands, Alaska · 1788 days ago · 8 km deep · 83 km away
- 2.9238 km WSW of Adak, Alaska · 1787 days ago · 27 km deep · 97 km away
- 2.076 km WSW of Adak, Alaska · 1785 days ago · 26 km deep · 71 km away
- 3.6108 km WSW of Adak, Alaska · 1785 days ago · 34 km deep · 39 km away
- 1.684 km W of Adak, Alaska · 1785 days ago · 13 km deep · 81 km away
- 1.5100 km WSW of Adak, Alaska · 1784 days ago · 22 km deep · 56 km away
- 2.5159 km WSW of Adak, Alaska · 1783 days ago · 72 km deep · 25 km away
- 1.7148 km W of Adak, Alaska · 1783 days ago · 13 km deep · 59 km away
- 1.698 km SW of Adak, Alaska · 1783 days ago · 45 km deep · 52 km away
- 2.080 km WSW of Adak, Alaska · 1782 days ago · 26 km deep · 67 km away
- 3.1161 km WSW of Adak, Alaska · 1781 days ago · 10 km deep · 19 km away
- 1.9169 km WSW of Adak, Alaska · 1781 days ago · 21 km deep · 24 km away
- 1.862 km W of Adak, Alaska · 1781 days ago · 87 km deep · 91 km away
- 3.1174 km WSW of Adak, Alaska · 1781 days ago · 31 km deep · 29 km away
- 2.0181 km W of Adak, Alaska · 1781 days ago · 77 km deep · 74 km away
- 2.879 km WSW of Adak, Alaska · 1779 days ago · 35 km deep · 68 km away
- 2.5139 km SW of Adak, Alaska · 1778 days ago · 35 km deep · 19 km away
- 1.8130 km WSW of Adak, Alaska · 1777 days ago · 26 km deep · 19 km away
- 3.8Andreanof Islands, Aleutian Islands, Alaska · 1777 days ago · 21 km deep · 41 km away
- 2.0138 km W of Adak, Alaska · 1776 days ago · 141 km deep · 81 km away
- 1.5108 km SW of Adak, Alaska · 1776 days ago · 25 km deep · 51 km away
- 1.7119 km SW of Adak, Alaska · 1776 days ago · 26 km deep · 40 km away
- 1.7113 km WSW of Adak, Alaska · 1775 days ago · 18 km deep · 35 km away
- 2.7200 km W of Adak, Alaska · 1775 days ago · 89 km deep · 86 km away
- 2.0Andreanof Islands, Aleutian Islands, Alaska · 1775 days ago · 34 km deep · 65 km away
- 3.3242 km WSW of Adak, Alaska · 1774 days ago · 12 km deep · 96 km away
- 3.4216 km WSW of Adak, Alaska · 1773 days ago · 33 km deep · 72 km away
- 2.1226 km WSW of Adak, Alaska · 1773 days ago · 13 km deep · 81 km away
- 1.7143 km WSW of Adak, Alaska · 1773 days ago · 24 km deep · 5 km away
- 1.571 km SW of Adak, Alaska · 1772 days ago · 38 km deep · 76 km away
- 1.6132 km WSW of Adak, Alaska · 1771 days ago · 23 km deep · 15 km away
- 1.5116 km WSW of Adak, Alaska · 1771 days ago · 28 km deep · 31 km away
- 1.7143 km SW of Adak, Alaska · 1771 days ago · 26 km deep · 15 km away
- 1.8139 km SW of Adak, Alaska · 1771 days ago · 22 km deep · 14 km away
- 2.0173 km WSW of Adak, Alaska · 1771 days ago · 23 km deep · 27 km away
- 1.9149 km WSW of Adak, Alaska · 1771 days ago · 24 km deep · 9 km away
- 5.0128 km WSW of Adak, Alaska · 1771 days ago · 48 km deep · 19 km away · felt by 1
- 2.8112 km WSW of Adak, Alaska · 1771 days ago · 22 km deep · 34 km away
- 1.7126 km WSW of Adak, Alaska · 1771 days ago · 13 km deep · 21 km away
- 1.6129 km WSW of Adak, Alaska · 1771 days ago · 25 km deep · 18 km away
- 1.8180 km WSW of Adak, Alaska · 1770 days ago · 26 km deep · 36 km away
- 1.7126 km SW of Adak, Alaska · 1770 days ago · 51 km deep · 24 km away
- 1.8211 km W of Adak, Alaska · 1770 days ago · 72 km deep · 93 km away
- 2.2204 km WSW of Adak, Alaska · 1769 days ago · 44 km deep · 65 km away
- 1.888 km WSW of Adak, Alaska · 1769 days ago · 14 km deep · 58 km away
- 1.9143 km WSW of Adak, Alaska · 1769 days ago · 23 km deep · 26 km away
- 2.156 km W of Adak, Alaska · 1769 days ago · 101 km deep · 94 km away
- 1.5136 km WSW of Adak, Alaska · 1768 days ago · -2 km deep · 41 km away
- 2.6213 km WSW of Adak, Alaska · 1768 days ago · 10 km deep · 69 km away
- 1.6130 km WSW of Adak, Alaska · 1768 days ago · 25 km deep · 21 km away
- 1.9Andreanof Islands, Aleutian Islands, Alaska · 1767 days ago · 20 km deep · 30 km away
- 1.7120 km SW of Adak, Alaska · 1767 days ago · 26 km deep · 30 km away
- 2.2212 km WSW of Adak, Alaska · 1767 days ago · 69 km deep · 84 km away
- 1.898 km WSW of Adak, Alaska · 1767 days ago · 15 km deep · 49 km away
- 2.398 km SW of Adak, Alaska · 1766 days ago · 34 km deep · 63 km away
- 2.2129 km SW of Adak, Alaska · 1766 days ago · 19 km deep · 28 km away
- 2.3216 km WSW of Adak, Alaska · 1765 days ago · 13 km deep · 72 km away
- 1.665 km SSW of Adak, Alaska · 1765 days ago · 47 km deep · 99 km away
The first 60 of 134.
Before
- 1.9223 km WSW of Adak, Alaska · 1790 days ago · 66 km deep · 97 km away
- 3.8119 km WSW of Adak, Alaska · 1791 days ago · 88 km deep · 38 km away
- 1.972 km WSW of Adak, Alaska · 1791 days ago · 66 km deep · 76 km away
- 3.1225 km WSW of Adak, Alaska · 1792 days ago · 27 km deep · 90 km away
- 3.6Andreanof Islands, Aleutian Islands, Alaska · 1792 days ago · 82 km deep · 38 km away
- 1.7100 km WSW of Adak, Alaska · 1792 days ago · 63 km deep · 48 km away
- 1.9123 km SW of Adak, Alaska · 1792 days ago · 22 km deep · 37 km away
- 3.6204 km WSW of Adak, Alaska · 1793 days ago · 35 km deep · 67 km away
- 2.9236 km WSW of Adak, Alaska · 1793 days ago · 22 km deep · 91 km away
- 3.2141 km WSW of Adak, Alaska · 1793 days ago · 31 km deep · 7 km away
- 1.760 km W of Adak, Alaska · 1794 days ago · 89 km deep · 95 km away
- 1.7127 km WSW of Adak, Alaska · 1795 days ago · 7 km deep · 36 km away
- 2.0108 km W of Adak, Alaska · 1795 days ago · 83 km deep · 72 km away
- 1.8126 km WSW of Adak, Alaska · 1795 days ago · 11 km deep · 39 km away
- 1.9172 km WSW of Adak, Alaska · 1795 days ago · 22 km deep · 37 km away
- 2.072 km W of Adak, Alaska · 1795 days ago · 77 km deep · 81 km away
- 1.8123 km WSW of Adak, Alaska · 1797 days ago · 17 km deep · 24 km away
- 1.7117 km WSW of Adak, Alaska · 1797 days ago · 29 km deep · 30 km away
- 3.1Andreanof Islands, Aleutian Islands, Alaska · 1798 days ago · 146 km deep · 93 km away
- 3.3231 km WSW of Adak, Alaska · 1800 days ago · 6 km deep · 85 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak021dxctpg7. Read Thu, Sep 24, 2026, 8:59 AM UTC.