QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Ridgeway, AK

No earthquake was likely felt in Ridgeway in the 24 hours to 2:47 pm AKST (23:47 UTC). The last one was M 4.3, 38 km (24 mi) SSE, at 2:30 am AKST on 1 November 2026, estimated intensity II (weak) in town; 115 felt reports to USGS. Every earthquake near Ridgeway

This page: a magnitude 1.7 earthquake was recorded 15 km (9 mi) north-northeast of Ridgeway, AK, at 5:20 pm AKDT on 8 July 2026 (01:20 UTC), 56 km deep.

USGS: 15 km NNE of Ridgeway, Alaska

85 km (53 mi) SW of Anchorage, AK

5:20 pm AKDT, Jul 8, 2026 · · 56 km deep · released about 11 lb of TNT

Every earthquake near Ridgeway Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 80 kmAnchorage Municipality 108 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
5:20 pm AKDT on 8 July 2026 ()
Where
15 km (9 mi) north-northeast of Ridgeway, AK · earthquakes near Ridgeway
Magnitude
M 1.7 (ml)
Depth
56 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 80 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 120 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 Ridgeway, 15 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.

Earthquakes near other towns within 30 km: Nikiski, Sterling, Kenai, Soldotna, Funny River.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 4.8 on 2022-07-12 — about 45,000 times the energy of this one.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 Southern Alaska · 49 km N of this epicentre
  2. 6.8 24 km ENE of Sterling, Alaska · 32 km E of this epicentre
  3. 6.7 6 km WNW of Nikiski, Alaska · 24 km WNW of this epicentre
  4. 6.4 19 km SSE of Tyonek, Alaska · 27 km N of this epicentre
  5. 5.7 19 km NNW of Nikiski, Alaska · 31 km NW 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 60.6570, -150.9780. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 80 km (50 mi) WSW earthquakes near Kenai Peninsula Borough
Anchorage Municipality, AK 108 km (67 mi) ENE earthquakes near Anchorage Municipality

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. 2.0 10 km N of Point Possession, Alaska
  2. 1.5 3 km N of Point Possession, Alaska
  3. 1.5 21 km NNE of Nikiski, Alaska
  4. 2.3 10 km W of Point Possession, Alaska
  5. 1.6 5 km NW of Salamatof, Alaska
  6. 2.0 17 km S of Point Possession, Alaska
  7. 2.7 21 km SSW of Tyonek, Alaska
  8. 3.1 4 km WSW of Point Possession, Alaska
  9. 2.1 12 km ENE of Kasilof, Alaska
  10. 1.6 10 km NE of Point Possession, Alaska
  11. 2.2 7 km E of Clam Gulch, Alaska
  12. 2.5 23 km SE of Kasilof, Alaska
  13. 2.6 7 km ENE of Nikiski, Alaska
  14. 1.8 11 km WNW of Salamatof, Alaska
  15. 1.7 19 km WSW of Tyonek, 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.