QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Anchor Point, AK

No earthquake was likely felt in Anchor Point in the 24 hours to 7:54 am AKST (16:54 UTC). The last one was M 4.3, 69 km (43 mi) NE, at 2:30 am AKST on 1 November 2026, estimated intensity II (weak) in town; 115 felt reports to USGS. Every earthquake near Anchor Point

This page: a magnitude 2.6 earthquake was recorded 39 km (24 mi) north-northwest of Anchor Point, AK, at 12:03 pm AKDT on 27 October 2017 (20:03 UTC), 67 km deep.

USGS: 22 km WNW of Ninilchik, Alaska

12:03 pm AKDT, Oct 27, 2017 · · 67 km deep · released about 240 lb of TNT

Every earthquake near Anchor Point Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 32 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
12:03 pm AKDT on 27 October 2017 ()
Where
39 km (24 mi) north-northwest of Anchor Point, AK · earthquakes near Anchor Point
Magnitude
M 2.6 (ml)
Depth
67 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 32 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1191 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 it was probably too small to be felt, even directly above it. In Anchor Point, 39 km away, the estimate is intensity II (weak). 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 5.3 on 2017-05-07 — about 11,000 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.2 16 km WNW of Happy Valley, Alaska · 12 km SSE of this epicentre
  2. 5.8 23 km WNW of Happy Valley, Alaska · 11 km SSW of this epicentre
  3. 5.6 63 km WNW of Ninilchik, Alaska · 40 km WNW of this epicentre
  4. 5.5 13 km NW of Happy Valley, Alaska · 12 km SE of this epicentre
  5. 5.5 39 km WNW of Ninilchik, Alaska · 17 km WNW 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 60.1055, -152.0638. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 32 km (20 mi) NNW earthquakes near Kenai Peninsula Borough

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. 1.7 26 km NW of Anchor Point, Alaska
  2. 1.6 45 km WNW of Happy Valley, Alaska
  3. 2.3 39 km NW of Ninilchik, Alaska
  4. 2.0 16 km WSW of Happy Valley, Alaska
  5. 1.8 51 km WNW of Happy Valley, Alaska
  6. 1.5 43 km WNW of Clam Gulch, Alaska
  7. 1.5 13 km NW of Anchor Point, Alaska
  8. 1.6 42 km W of Kalifornsky, Alaska
  9. 1.5 Southern Alaska
  10. 1.7 28 km W of Happy Valley, Alaska
  11. 1.7 23 km WNW of Kalifornsky, Alaska
  12. 1.7 9 km NNE of Nikolaevsk, Alaska
  13. 1.7 46 km WNW of Ninilchik, Alaska
  14. 2.0 38 km WNW of Ninilchik, Alaska
  15. 1.5 20 km NW of Anchor Point, 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.