QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Kodiak Station, AK

No earthquake was likely felt in Kodiak Station in the 24 hours to 7:03 am AKST (16:03 UTC). The last one was M 5.5, 129 km (80 mi) NNW, at 10:34 am AKDT on 6 October 2026, estimated intensity III (weak) in town; 342 felt reports to USGS. Every earthquake near Kodiak Station

This page: a magnitude 1.9 earthquake was recorded 47 km (29 mi) southwest of Kodiak Station, AK, at 8:09 am AKDT on 26 May 2023 (16:09 UTC), 44 km deep.

USGS: Kodiak Island region, Alaska

8:09 am AKDT, May 26, 2023 · · 44 km deep · released about 21 lb of TNT

Every earthquake near Kodiak Station Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kodiak Island Borough 48 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
8:09 am AKDT on 26 May 2023 ()
Where
47 km (29 mi) southwest of Kodiak Station, AK · earthquakes near Kodiak Station
Magnitude
M 1.9 (ml)
Depth
44 km below the surface
Felt
no reports yet
Nearest
Kodiak Island Borough, 48 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1260 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 Kodiak Station, 47 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 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 4.1 on 2017-11-09 — about 2,000 times the energy of this one.

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

  1. 5.9 25 km E of Old Harbor, Alaska · 43 km SSE of this epicentre
  2. 5.7 6 km NE of Larsen Bay, Alaska · 43 km WNW of this epicentre
  3. 5.1 32 km NNE of Larsen Bay, Alaska · 49 km NW 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 57.5031, -153.2112. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kodiak Island Borough, AK 48 km (30 mi) WNW earthquakes near Kodiak Island Borough

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

Aftershocks so far

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

  1. 1.6 31 km SW of Womens Bay, Alaska
  2. 1.8 23 km SSW of Womens Bay, Alaska
  3. 1.8 19 km SSW of Port Lions, Alaska
  4. 2.8 20 km NNE of Old Harbor, Alaska
  5. 2.2 20 km WSW of Womens Bay, Alaska
  6. 2.6 19 km WSW of Womens Bay, Alaska
  7. 1.5 20 km W of Port Lions, Alaska
  8. 1.7 39 km W of Port Lions, Alaska
  9. 2.1 36 km NE of Larsen Bay, Alaska
  10. 2.0 21 km W of Port Lions, Alaska
  11. 2.1 29 km NNE of Old Harbor, Alaska
  12. 1.9 20 km ENE of Larsen Bay, Alaska
  13. 1.8 29 km WSW of Port Lions, Alaska
  14. 1.7 22 km ESE of Larsen Bay, Alaska
  15. 2.0 25 km NNW of Old Harbor, 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.