QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

155 km ESE of McCarthy, Alaska

Yes. A magnitude 2.5 earthquake was recorded 155 km ESE of McCarthy, Alaska at 08:22 UTC on 2026-06-04, 5.0 km deep.

· 5.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yakutat City and Borough 114 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 2.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Yakutat City and Borough, 114 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 90 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 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 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 4.8 on 2023-08-06 — about 2,800 times the energy of this one.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.1 109 km E of McCarthy, Alaska · 48 km WNW of this epicentre
  2. 5.7 152 km E of McCarthy, Alaska · 34 km N of this epicentre
  3. 5.3 136 km E of McCarthy, Alaska · 47 km NNW of this epicentre
  4. 5.1 145 km ESE of McCarthy, Alaska · 17 km NNW of this epicentre
  5. 5.1 144 km ESE of McCarthy, Alaska · 17 km NNW 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 61.0331, -140.1506. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yakutat City and Borough, AK 114 km (71 mi) S earthquakes near Yakutat City and Borough

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

Aftershocks so far

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

  1. 2.0 120 km NNW of Yakutat, Alaska
  2. 1.9 117 km N of Yakutat, Alaska
  3. 1.6 152 km SSE of Alcan Border, Alaska
  4. 1.6 158 km ESE of McCarthy, Alaska
  5. 2.4 117 km NNW of Yakutat, Alaska
  6. 1.5 156 km ESE of McCarthy, Alaska
  7. 1.6 122 km ESE of McCarthy, Alaska
  8. 1.6 144 km E of McCarthy, Alaska
  9. 1.9 159 km ESE of McCarthy, Alaska
  10. 1.6 157 km ESE of McCarthy, Alaska
  11. 1.8 157 km ESE of McCarthy, Alaska
  12. 2.2 121 km NNW of Yakutat, Alaska
  13. 1.7 118 km N of Yakutat, Alaska
  14. 1.8 118 km N of Yakutat, Alaska
  15. 2.0 157 km ESE of McCarthy, 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.