QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

30 km S of Minto, Alaska

Yes. A magnitude 1.9 earthquake was recorded 30 km S of Minto, Alaska, at 10:26 am AKDT on 30 October 2022 (18:26 UTC), 14 km deep.

· 14 km deep · released about 21 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
Magnitude
M 1.9 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Yukon-Koyukuk Census Area, 122 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1458 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 4 km (2 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 since 2016 was M 4.5 on 2019-04-11 — about 7,900 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 6.0 36 km E of Minto, Alaska · 45 km NE of this epicentre
  2. 5.2 14 km E of Minto, Alaska · 31 km NNE of this epicentre
  3. 5.0 14 km E of Minto, Alaska · 32 km NNE 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 64.8832, -149.2350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yukon-Koyukuk Census Area, AK 122 km (76 mi) WNW earthquakes near Yukon-Koyukuk Census Area

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

Aftershocks so far

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

  1. 3.4 27 km E of Minto, Alaska
  2. 1.7 29 km SE of Minto, Alaska
  3. 2.7 29 km SE of Minto, Alaska
  4. 1.6 26 km NNE of Four Mile Road, Alaska
  5. 1.6 27 km N of Four Mile Road, Alaska
  6. 1.7 4 km WSW of Minto, Alaska
  7. 1.9 28 km W of Four Mile Road, Alaska
  8. 1.6 22 km N of Four Mile Road, Alaska
  9. 1.5 25 km N of Four Mile Road, Alaska
  10. 1.6 26 km N of Four Mile Road, Alaska
  11. 2.1 31 km ESE of Minto, Alaska
  12. 1.7 14 km WSW of Nenana, Alaska
  13. 1.7 23 km WNW of Four Mile Road, Alaska
  14. 1.6 16 km NNW of Four Mile Road, Alaska
  15. 1.6 18 km NNE of Four Mile Road, 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.