QuakeIndex

Earthquake · automatic estimate, may change

M 1.8ml

Earthquake near Soldotna, AK

USGS: 11 km SE of Soldotna, Alaska

1:08 pm AKDT, Sep 28, 2026 · · 44 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Kenai Peninsula Borough 76 km
Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.
When
1:08 pm AKDT on 28 September 2026 ()
Where
12 km (7 mi) SE of Soldotna, AK · earthquakes near Soldotna
Magnitude
M 1.8 (ml)
Depth
44 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 76 km W
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 4 days ago

A magnitude 1.8 earthquake was recorded 12 km (7 mi) SE of Soldotna, AK, at 1:08 pm AKDT on 28 September 2026 (21:08 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Funny River, Ridgeway, Sterling, Kalifornsky, Cohoe, Kenai.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 4.9 on 2026-06-27 — about 45,000 times the energy of this one.

Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 24 km ENE of Sterling, Alaska · 41 km NE of this epicentre
  2. 6.7 6 km WNW of Nikiski, Alaska · 43 km NW of this epicentre
  3. 6.0 31 km S of Funny River, Alaska · 25 km SE of this epicentre
  4. 5.9 13 km N of Fox River, Alaska · 47 km S of this epicentre
  5. 5.4 19 km NE of Nikiski, Alaska · 46 km N 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 60.4000, -150.9350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 76 km (47 mi) W earthquakes near Kenai Peninsula Borough
Anchorage Municipality, AK 124 km (77 mi) NE earthquakes near Anchorage Municipality

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

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

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.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

What changedFromToWhen
location12 km SE of Soldotna, Alaska11 km SE of Soldotna, Alaska
longitude-150.93-150.93
latitude60.460.4
depth45.944.4

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.