M1.9 earthquake 72 km SW of Adak, Alaska
A magnitude 1.9 earthquake struck 72 km SW of Adak, Alaska on Sat, Aug 19, 2017, 5:21 AM HADT (14:21 UTC), 80 km (50 mi) below the surface.
A larger quake followed: M5.1 125 km WSW 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
- 1.9 (ML, local (Richter)), micro
- Magnitude from
- Alaska Earthquake Center
- Local time
- UTC
- 2017-08-19 14:21:29 UTC
- Depth
- 79.9 km (49.6 mi), intermediate-depth
- Epicenter
- 51.506° N, 177.505° 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
- 11
Nearby
Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.
After
- 2.1117 km SW of Adak, Alaska · 3331 days ago · 45 km deep · 45 km away
- 1.984 km WSW of Adak, Alaska · 3331 days ago · 19 km deep · 16 km away
- 1.8126 km W of Adak, Alaska · 3331 days ago · 12 km deep · 70 km away
- 1.8127 km WSW of Adak, Alaska · 3330 days ago · 13 km deep · 67 km away
- 1.756 km WSW of Adak, Alaska · 3330 days ago · 69 km deep · 25 km away
- 2.2128 km W of Adak, Alaska · 3330 days ago · 10 km deep · 72 km away
- 1.672 km SSW of Adak, Alaska · 3330 days ago · 28 km deep · 34 km away
- 1.6131 km W of Adak, Alaska · 3329 days ago · 13 km deep · 75 km away
- 2.0127 km WSW of Adak, Alaska · 3329 days ago · 9 km deep · 64 km away
- 1.5127 km W of Adak, Alaska · 3329 days ago · 12 km deep · 69 km away
- 2.0134 km W of Adak, Alaska · 3329 days ago · 14 km deep · 78 km away
- 2.3130 km W of Adak, Alaska · 3329 days ago · 12 km deep · 74 km away
- 2.5125 km WSW of Adak, Alaska · 3329 days ago · 23 km deep · 63 km away
- 2.243 km SSW of Adak, Alaska · 3329 days ago · 25 km deep · 50 km away
- 2.3129 km W of Adak, Alaska · 3328 days ago · 12 km deep · 70 km away
- 2.1125 km WSW of Adak, Alaska · 3328 days ago · 11 km deep · 63 km away
- 2.1122 km W of Adak, Alaska · 3328 days ago · 13 km deep · 66 km away
- 2.661 km SW of Adak, Alaska · 3328 days ago · 56 km deep · 15 km away
- 2.4127 km WSW of Adak, Alaska · 3328 days ago · 18 km deep · 62 km away
- 1.958 km W of Adak, Alaska · 3328 days ago · 92 km deep · 31 km away
- 2.3128 km W of Adak, Alaska · 3328 days ago · 16 km deep · 70 km away
- 2.3132 km W of Adak, Alaska · 3328 days ago · 15 km deep · 78 km away
- 2.5133 km WSW of Adak, Alaska · 3328 days ago · 17 km deep · 71 km away
- 1.9123 km WSW of Adak, Alaska · 3327 days ago · 15 km deep · 61 km away
- 2.5126 km SW of Adak, Alaska · 3326 days ago · 27 km deep · 54 km away
- 2.1154 km W of Adak, Alaska · 3326 days ago · 78 km deep · 98 km away
- 1.7121 km WSW of Adak, Alaska · 3326 days ago · 13 km deep · 62 km away
- 1.754 km SE of Adak, Alaska · 3326 days ago · 26 km deep · 94 km away
- 1.8132 km W of Adak, Alaska · 3326 days ago · 12 km deep · 75 km away
- 1.8132 km W of Adak, Alaska · 3326 days ago · 13 km deep · 75 km away
- 1.6126 km WSW of Adak, Alaska · 3326 days ago · 9 km deep · 61 km away
- 1.7Andreanof Islands, Aleutian Islands, Alaska · 3326 days ago · 14 km deep · 66 km away
- 1.8124 km WSW of Adak, Alaska · 3326 days ago · 16 km deep · 64 km away
- 2.4145 km WSW of Adak, Alaska · 3326 days ago · 50 km deep · 73 km away
- 1.647 km SW of Adak, Alaska · 3326 days ago · 45 km deep · 28 km away
- 2.1126 km WSW of Adak, Alaska · 3326 days ago · 7 km deep · 62 km away
- 2.855 km WSW of Adak, Alaska · 3326 days ago · 69 km deep · 24 km away
- 2.5125 km WSW of Adak, Alaska · 3326 days ago · 12 km deep · 63 km away
- 1.8131 km W of Adak, Alaska · 3325 days ago · 6 km deep · 76 km away
- 1.744 km S of Adak, Alaska · 3325 days ago · 44 km deep · 57 km away
- 2.0127 km WSW of Adak, Alaska · 3325 days ago · 13 km deep · 64 km away
- 2.554 km SE of Adak, Alaska · 3325 days ago · 40 km deep · 99 km away
- 2.293 km WSW of Adak, Alaska · 3324 days ago · 68 km deep · 34 km away
- 1.943 km SE of Adak, Alaska · 3324 days ago · 43 km deep · 92 km away
- 2.1133 km W of Adak, Alaska · 3324 days ago · 14 km deep · 74 km away
- 2.045 km SSE of Adak, Alaska · 3324 days ago · 58 km deep · 73 km away
- 1.744 km SW of Adak, Alaska · 3324 days ago · 26 km deep · 35 km away
- 3.5119 km SW of Adak, Alaska · 3324 days ago · 28 km deep · 47 km away
- 2.5129 km WSW of Adak, Alaska · 3324 days ago · 18 km deep · 62 km away
- 2.040 km SSW of Adak, Alaska · 3324 days ago · 26 km deep · 41 km away
- 2.1127 km WSW of Adak, Alaska · 3324 days ago · 13 km deep · 65 km away
- 2.6102 km WSW of Adak, Alaska · 3324 days ago · 16 km deep · 31 km away
- 2.036 km ESE of Adak, Alaska · 3323 days ago · 54 km deep · 93 km away
- 1.953 km SW of Adak, Alaska · 3323 days ago · 45 km deep · 30 km away
- 2.3116 km WSW of Adak, Alaska · 3323 days ago · 16 km deep · 45 km away
- 2.1101 km SW of Adak, Alaska · 3323 days ago · 15 km deep · 29 km away
- 2.0Andreanof Islands, Aleutian Islands, Alaska · 3323 days ago · 16 km deep · 64 km away
- 1.7129 km W of Adak, Alaska · 3323 days ago · 13 km deep · 71 km away
- 1.8Andreanof Islands, Aleutian Islands, Alaska · 3323 days ago · 49 km deep · 56 km away
- 1.760 km SSE of Adak, Alaska · 3322 days ago · 56 km deep · 77 km away
The first 60 of at least 199.
Before
- 1.675 km WSW of Adak, Alaska · 3331 days ago · 23 km deep · 6 km away
- 2.2Andreanof Islands, Aleutian Islands, Alaska · 3331 days ago · 47 km deep · 71 km away
- 1.7117 km WSW of Adak, Alaska · 3332 days ago · 12 km deep · 54 km away
- 1.7129 km W of Adak, Alaska · 3332 days ago · 23 km deep · 78 km away
- 1.7114 km WSW of Adak, Alaska · 3332 days ago · 13 km deep · 48 km away
- 1.856 km WSW of Adak, Alaska · 3332 days ago · 65 km deep · 17 km away
- 1.6127 km WSW of Adak, Alaska · 3332 days ago · 13 km deep · 64 km away
- 2.185 km WSW of Adak, Alaska · 3332 days ago · 18 km deep · 17 km away
- 2.0118 km WSW of Adak, Alaska · 3332 days ago · 13 km deep · 55 km away
- 2.7117 km WSW of Adak, Alaska · 3332 days ago · 10 km deep · 48 km away
- 1.6Andreanof Islands, Aleutian Islands, Alaska · 3333 days ago · 15 km deep · 72 km away
- 1.6125 km WSW of Adak, Alaska · 3333 days ago · 16 km deep · 63 km away
- 1.765 km SW of Adak, Alaska · 3333 days ago · 43 km deep · 25 km away
- 1.5122 km W of Adak, Alaska · 3333 days ago · 18 km deep · 63 km away
- 2.2120 km WSW of Adak, Alaska · 3333 days ago · 14 km deep · 58 km away
- 2.3114 km WSW of Adak, Alaska · 3333 days ago · 12 km deep · 49 km away
- 1.9124 km WSW of Adak, Alaska · 3333 days ago · 7 km deep · 63 km away
- 2.1111 km SW of Adak, Alaska · 3333 days ago · 39 km deep · 39 km away
- 2.3125 km WSW of Adak, Alaska · 3333 days ago · 13 km deep · 64 km away
- 2.2Andreanof Islands, Aleutian Islands, Alaska · 3333 days ago · 5 km deep · 64 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak017am9lstj (also filed as ak16750011). Read Fri, Oct 2, 2026, 6:02 PM UTC.