QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

40 km ENE of Susitna North, AK

Yes. A magnitude 2.0 earthquake was recorded 40 km ENE of Susitna North, AK, at 11:31 am AKDT on 27 May 2019 (19:31 UTC), 2.9 km deep.

· 2.9 km deep · released about 30 lb of TNT

10 km30 km60 km120 km N Matanuska-Susitna Borough 18 km
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
Magnitude
M 2.0 (ml)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Matanuska-Susitna Borough, 18 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2711 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 16 km (10 mi) from the epicentre. 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-08-21 — about 2,800 times the energy of this one.

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 62.3260, -149.1750. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Matanuska-Susitna Borough, AK 18 km (11 mi) WSW earthquakes near Matanuska-Susitna Borough

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 1.7 32 km N of Sutton-Alpine, Alaska
  2. 2.0 31 km N of Sutton-Alpine, Alaska
  3. 1.5 19 km N of Fishhook, Alaska
  4. 1.7 16 km SE of Susitna North, Alaska
  5. 1.7 63 km ENE of Chase, Alaska
  6. 1.7 62 km ENE of Chase, Alaska
  7. 1.9 18 km NNW of Sutton-Alpine, Alaska
  8. 1.6 25 km E of Susitna North, Alaska
  9. 2.0 29 km N of Fishhook, Alaska
  10. 1.5 21 km ESE of Susitna North, Alaska
  11. 1.9 33 km NE of Chase, Alaska
  12. 2.1 74 km ENE of Chase, Alaska
  13. 1.6 23 km N of Fishhook, Alaska
  14. 1.6 33 km ENE of Susitna North, Alaska
  15. 2.1 49 km ENE of Susitna North, 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.