Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Nikiski, AK
No earthquake was likely felt in Nikiski in the 24 hours to 2:00 pm AKST (23:00 UTC). The last one was M 4.3, 58 km (36 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 Nikiski
This page: a magnitude 1.7 earthquake was recorded 14 km (9 mi) east-northeast of Nikiski, AK, at 3:04 pm AKDT on 29 June 2017 (23:04 UTC), 4.2 km deep.
USGS: 14 km ENE of Nikiski, Alaska
82 km (51 mi) SW of Anchorage, AK
- When
- 3:04 pm AKDT on 29 June 2017 ()
- Where
- 14 km (9 mi) east-northeast of Nikiski, AK · earthquakes near Nikiski
- Magnitude
- M 1.7 (ml)
- Depth
- 4.2 km below the surface
- Felt
- no reports yet
- Nearest
- Kenai Peninsula Borough, 81 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1193 days ago
Earthquake alerts for Nikiski, AK
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 12 km (7 mi) from the epicentre. In Nikiski, 14 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: Ridgeway, Kenai, Sterling, 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.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 6.8 Southern Alaska · 41 km N of this epicentre
- 6.8 4 km NE of Beluga, Alaska · 49 km N of this epicentre
- 6.8 24 km ENE of Sterling, Alaska · 36 km ESE of this epicentre
- 6.7 6 km WNW of Nikiski, Alaska · 19 km W of this epicentre
- 6.4 19 km SSE of Tyonek, Alaska · 19 km N 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 60.7268, -151.0398. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kenai Peninsula Borough, AK | 81 km (50 mi) | WSW | earthquakes near Kenai Peninsula Borough |
| Anchorage Municipality, AK | 107 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
58 earthquakes have been recorded within 50 km since this one.
- 1.5 22 km SSE of Point Possession, Alaska
- 2.3 4 km SW of Point Possession, Alaska
- 2.3 25 km WSW of Tyonek, Alaska
- 1.5 9 km NNE of Nikiski, Alaska
- 1.7 10 km WSW of Salamatof, Alaska
- 2.0 19 km SSE of Point Possession, Alaska
- 1.9 10 km NE of Ridgeway, Alaska
- 1.5 5 km SSE of Soldotna, Alaska
- 2.7 9 km E of Sterling, Alaska
- 1.6 Kenai Peninsula, Alaska
- 1.9 5 km SSE of Soldotna, Alaska
- 1.7 8 km SSW of Tyonek, Alaska
- 1.5 19 km ESE of Kasilof, Alaska
- 1.7 11 km WSW of Point Possession, Alaska
- 2.0 15 km WNW of Kalifornsky, 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.