QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Homer, AK

No earthquake was likely felt in Homer in the 24 hours to 12:18 am AKST (09:18 UTC). The last one was M 4.3, 71 km (44 mi) NNE, at 2:30 am AKST on 1 November 2026, estimated intensity II (weak) in town; 115 felt reports to USGS. Every earthquake near Homer

This page: a magnitude 1.9 earthquake was recorded 49 km (30 mi) east-northeast of Homer, AK, at 3:55 pm AKST on 13 January 2021 (00:55 UTC), 48 km deep.

USGS: 10 km E of Fox River, Alaska

3:55 pm AKST, Jan 13, 2021 · · 48 km deep · released about 21 lb of TNT

Every earthquake near Homer Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 104 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
3:55 pm AKST on 13 January 2021 ()
Where
49 km (30 mi) east-northeast of Homer, AK · earthquakes near Homer
Magnitude
M 1.9 (ml)
Depth
48 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 104 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2116 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 Homer, 49 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 4.4 on 2019-01-09 — about 5,600 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 6.0 31 km S of Funny River, Alaska · 43 km N of this epicentre
  2. 6.0 6 km SSE of Fox River, Alaska · 10 km WSW of this epicentre
  3. 5.9 13 km N of Fox River, Alaska · 19 km NW of this epicentre
  4. 5.6 7 km SE of Fritz Creek, Alaska · 30 km SW 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 59.8409, -150.7759. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 104 km (64 mi) NW earthquakes near Kenai Peninsula Borough

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

Aftershocks so far

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

  1. 2.3 29 km S of Funny River, Alaska
  2. 1.7 12 km E of Fritz Creek, Alaska
  3. 1.5 Kenai Peninsula, Alaska
  4. 1.9 13 km ESE of Clam Gulch, Alaska
  5. 1.5 21 km SSE of Clam Gulch, Alaska
  6. 1.7 5 km WNW of Fox River, Alaska
  7. 1.6 15 km ENE of Fox River, Alaska
  8. 2.1 18 km ESE of Clam Gulch, Alaska
  9. 1.6 19 km ESE of Fox River, Alaska
  10. 1.8 18 km SSE of Clam Gulch, Alaska
  11. 1.7 45 km W of Seward, Alaska
  12. 2.0 23 km NNE of Fox River, Alaska
  13. 2.7 41 km ENE of Fox River, Alaska
  14. 2.0 29 km NNE of Fox River, Alaska
  15. 1.8 14 km N of Fritz Creek, 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.