QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Akutan, AK

No earthquake was likely felt in Akutan in the 24 hours to 1:30 pm AKST (22:30 UTC). The last one was M 4.4, 84 km (52 mi) SE, at 3:00 pm AKST on 11 November 2026, estimated intensity II (weak) in town. Every earthquake near Akutan

This page: a magnitude 2.2 earthquake was recorded 33 km (20 mi) east-northeast of Akutan, AK, at 7:15 am AKST on 2 February 2017 (16:15 UTC), 96 km deep.

USGS: 32 km ENE of Akutan, Alaska

7:15 am AKST, Feb 2, 2017 · · 96 km deep · released about 60 lb of TNT

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Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
7:15 am AKST on 2 February 2017 ()
Where
33 km (20 mi) east-northeast of Akutan, AK · earthquakes near Akutan
Magnitude
M 2.2 (ml)
Depth
96 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1197 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Akutan, 33 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.5 59 km ESE of Akutan, Alaska · 48 km SSE of this epicentre
  2. 6.4 60 km NE of Akutan, Alaska · 28 km NE of this epicentre
  3. 6.3 23 km NE of Akutan, Alaska · 15 km W of this epicentre
  4. 5.8 41 km ESE of Akutan, Alaska · 35 km SSE of this epicentre
  5. 5.6 35 km SE of Akutan, Alaska · 42 km S of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 54.2811, -165.3412. Map © OpenStreetMap contributors.

Aftershocks so far

49 earthquakes have been recorded within 50 km since this one.

  1. 2.2 42 km SE of Akutan, Alaska
  2. 2.1 41 km E of Akutan, Alaska
  3. 1.8 47 km ENE of Akutan, Alaska
  4. 1.9 50 km E of Akutan, Alaska
  5. 1.5 50 km E of Akutan, Alaska
  6. 1.6 Fox Islands, Aleutian Islands, Alaska
  7. 1.7 25 km E of Akutan, Alaska
  8. 4.8 37 km ESE of Akutan, Alaska
  9. 1.8 60 km E of Akutan, Alaska
  10. 2.1 56 km E of Akutan, Alaska
  11. 2.0 52 km SE of Akutan, Alaska
  12. 1.6 62 km ENE of Akutan, Alaska
  13. 3.2 11 km NNW of Akutan, Alaska
  14. 1.6 64 km E of Akutan, Alaska
  15. 1.7 64 km E of Akutan, Alaska

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.