QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Fritz Creek, AK

No earthquake was likely felt in Fritz Creek in the 24 hours to 7:50 am AKST (16:50 UTC). The last one was M 4.3, 55 km (34 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 Fritz Creek

This page: a magnitude 2.5 earthquake was recorded 6 km (3 mi) east-southeast of Fritz Creek, AK, at 12:32 am AKDT on 23 July 2020 (08:32 UTC), 59 km deep. 2 people have reported feeling it to USGS.

USGS: Kenai Peninsula, Alaska

12:32 am AKDT, Jul 23, 2020 · · 59 km deep · released about 170 lb of TNT

Every earthquake near Fritz Creek Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 95 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
12:32 am AKDT on 23 July 2020 ()
Where
6 km (3 mi) east-southeast of Fritz Creek, AK · earthquakes near Fritz Creek
Magnitude
M 2.5 (ml)
Depth
59 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Kenai Peninsula Borough, 95 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2232 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 Fritz Creek, 6 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.

Earthquakes near other towns within 30 km: Diamond Ridge, Homer.

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 4.3 on 2018-07-13 — about 500 times the energy of this one.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 6.0 6 km SSE of Fox River, Alaska · 18 km ENE of this epicentre
  2. 5.9 13 km N of Fox River, Alaska · 32 km NNE of this epicentre
  3. 5.6 7 km SE of Fritz Creek, Alaska · 4 km S of this epicentre
  4. 5.3 16 km SE of Seldovia, Alaska · 43 km SSW of this epicentre
  5. 5.0 5 km SSW of Seldovia, Alaska · 47 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 59.7160, -151.2053. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 95 km (59 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

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

  1. 1.6 8 km W of Fox River, Alaska
  2. 1.8 11 km S of Fox River, Alaska
  3. 1.7 19 km ESE of Ninilchik, Alaska
  4. 1.5 8 km NE of Nikolaevsk, Alaska
  5. 2.4 19 km SE of Fox River, Alaska
  6. 2.0 7 km WSW of Fox River, Alaska
  7. 1.6 6 km S of Fritz Creek, Alaska
  8. 1.5 9 km WNW of Fox River, Alaska
  9. 1.5 4 km SSW of Happy Valley, Alaska
  10. 1.6 27 km NNE of Fox River, Alaska
  11. 2.2 23 km SE of Clam Gulch, Alaska
  12. 1.5 12 km WNW of Fox River, Alaska
  13. 2.3 27 km NNE of Fox River, Alaska
  14. 2.0 8 km E of Happy Valley, Alaska
  15. 1.8 2 km NW of Kachemak City, 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.