Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Ridgeway, AK
No earthquake was likely felt in Ridgeway in the 24 hours to 3:36 pm AKST (00:36 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 1.6 earthquake was recorded 12 km (8 mi) north-northeast of Ridgeway, AK, at 3:05 am AKST on 17 January 2024 (12:05 UTC), 7.4 km deep.
USGS: 12 km NNE of Ridgeway, Alaska
87 km (54 mi) SW of Anchorage, AK
- When
- 3:05 am AKST on 17 January 2024 ()
- Where
- 12 km (8 mi) north-northeast of Ridgeway, AK · earthquakes near Ridgeway
- Magnitude
- M 1.6 (ml)
- Depth
- 7.4 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 1004 days ago
Earthquake alerts for Ridgeway, AK
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This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 8 km (5 mi) from the epicentre. In Ridgeway, 12 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: Sterling, Soldotna, Funny River, Kenai, Nikiski, Kalifornsky.
How big was it?
This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.6 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 63,000 times the energy of this one.
Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:
- 6.8 24 km ENE of Sterling, Alaska · 31 km E of this epicentre
- 6.7 6 km WNW of Nikiski, Alaska · 25 km WNW of this epicentre
- 6.4 19 km SSE of Tyonek, Alaska · 30 km N of this epicentre
- 6.0 31 km S of Funny River, Alaska · 48 km SSE of this epicentre
- 5.7 19 km NNW of Nikiski, Alaska · 34 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 60.6275, -150.9662. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kenai Peninsula Borough, AK | 80 km (50 mi) | WSW | earthquakes near Kenai Peninsula Borough |
| Anchorage Municipality, AK | 109 km (68 mi) | NE | earthquakes near Anchorage Municipality |
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.
- 1.5 9 km NW of Point Possession, Alaska
- 1.6 15 km SSE of Point Possession, Alaska
- 1.5 5 km ESE of Tyonek, Alaska
- 2.2 13 km SE of Tyonek, Alaska
- 1.5 13 km N of Nikiski, Alaska
- 1.6 15 km E of Kasilof, Alaska
- 1.6 1 km NNW of Point Possession, Alaska
- 1.5 18 km SSE of Soldotna, Alaska
- 1.6 15 km SE of Soldotna, Alaska
- 1.5 14 km W of Point Possession, Alaska
- 1.5 0 km W of Point Possession, Alaska
- 1.7 8 km NNW of Nikiski, Alaska
- 1.9 7 km N of Nikiski, Alaska
- 1.5 9 km NW of Nikiski, Alaska
- 1.5 15 km E of Nikiski, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.