QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

Earthquake near Fritz Creek, AK

No earthquake was likely felt in Fritz Creek in the 24 hours to 4:05 am AKST (13:05 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 3.5 earthquake was recorded 19 km (12 mi) northeast of Fritz Creek, AK, at 3:43 am AKDT on 2 September 2022 (11:43 UTC), 63 km deep. 9 people have reported feeling it to USGS.

USGS: 6 km W of Fox River, Alaska

3:43 am AKDT, Sep 2, 2022 · · 63 km deep · released about 2.7 tons of TNT

Every earthquake near Fritz Creek Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 89 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
3:43 am AKDT on 2 September 2022 ()
Where
19 km (12 mi) northeast of Fritz Creek, AK · earthquakes near Fritz Creek
Magnitude
M 3.5 (ml)
Depth
63 km below the surface
Felt
9 reports · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Nearest
Kenai Peninsula Borough, 89 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1468 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, people at rest would likely notice it out to about 10 km (6 mi) from the epicentre. In Fritz Creek, 19 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 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× more

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 4.7 on 2021-10-16 — about 63 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 · 46 km NNE of this epicentre
  2. 6.0 6 km SSE of Fox River, Alaska · 11 km SE of this epicentre
  3. 5.9 13 km N of Fox River, Alaska · 13 km NNE of this epicentre
  4. 5.6 7 km SE of Fritz Creek, Alaska · 22 km SSW 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 59.8682, -151.0756. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 89 km (55 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

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

  1. 1.9 16 km S of Halibut Cove, Alaska
  2. 1.5 27 km ESE of Kasilof, Alaska
  3. 1.5 37 km NE of Fox River, Alaska
  4. 1.8 12 km E of Fritz Creek, Alaska
  5. 1.5 16 km SSE of Clam Gulch, Alaska
  6. 1.5 12 km ESE of Clam Gulch, Alaska
  7. 2.2 5 km SSE of Clam Gulch, Alaska
  8. 1.9 14 km E of Seldovia Village, Alaska
  9. 2.0 30 km SE of Kasilof, Alaska
  10. 1.5 33 km SE of Kasilof, Alaska
  11. 1.7 32 km NNE of Fox River, Alaska
  12. 1.8 12 km ENE of Nikolaevsk, Alaska
  13. 1.5 10 km E of Nikolaevsk, Alaska
  14. 1.5 19 km SE of Clam Gulch, Alaska
  15. 1.6 11 km SE of Clam Gulch, 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.