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 2:10 pm AKST (23:10 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 34 km (21 mi) east-northeast of Fritz Creek, AK, at 7:41 am AKDT on 22 July 2025 (15:41 UTC), 36 km deep. 11 people have reported feeling it to USGS.

USGS: 13 km E of Fox River, Alaska

7:41 am AKDT, Jul 22, 2025 · · 36 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 107 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
7:41 am AKDT on 22 July 2025 ()
Where
34 km (21 mi) east-northeast of Fritz Creek, AK · earthquakes near Fritz Creek
Magnitude
M 3.5 (ml)
Depth
36 km below the surface
Felt
11 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
USGS impact alert
green
Nearest
Kenai Peninsula Borough, 107 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 406 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 52 km (32 mi) from the epicentre. In Fritz Creek, 34 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.

Likely felt in: Fritz Creek 34 km, intensity II. Estimated for each town centre; each link is that town's own record.

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 4.4 on 2019-01-09 — about 22 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 · 13 km WSW of this epicentre
  3. 5.9 13 km N of Fox River, Alaska · 21 km NW of this epicentre
  4. 5.6 7 km SE of Fritz Creek, Alaska · 33 km WSW 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 59.8388, -150.7171. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 107 km (66 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

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

  1. 2.1 15 km ESE of Clam Gulch, Alaska
  2. 2.4 25 km ESE of Fox River, Alaska
  3. 2.1 23 km N of Fox River, Alaska
  4. 2.1 30 km E of Fox River, Alaska
  5. 1.7 34 km ESE of Fox River, Alaska
  6. 2.0 9 km SSW of Fox River, Alaska
  7. 1.7 12 km S of Fox River, Alaska
  8. 2.2 6 km ESE of Fritz Creek, Alaska
  9. 2.6 11 km SSW of Fox River, Alaska
  10. 2.1 34 km ESE of Fox River, Alaska
  11. 2.1 45 km ESE of Fox River, Alaska
  12. 2.4 47 km ESE of Fox River, Alaska
  13. 2.1 26 km NNE of Fox River, Alaska
  14. 2.1 24 km ESE of Clam Gulch, Alaska
  15. 1.7 44 km ESE of Fox River, 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.