Earthquake · reviewed by a seismologist
M 1.8ml
38 km NE of Chase, Alaska
Yes. A magnitude 1.8 earthquake was recorded 38 km NE of Chase, Alaska, at 6:04 am AKDT on 16 June 2019 (14:04 UTC), 10 km deep.
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Matanuska-Susitna Borough, 53 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2685 days ago
Earthquake alerts for Susitna North, 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 9 km (6 mi) from the epicentre. 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 710,000× the energy of this one
- Around the size people start to feel M 3.0 63× the energy of this one
- This earthquake M 1.8 about 15 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 4.6 on 2016-04-26 — about 16,000 times the energy of this one.
Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:
- 5.6 44 km S of Cantwell, AK · 45 km NE of this epicentre
- 5.5 52 km WSW of Cantwell, Alaska · 49 km NNW of this epicentre
- 5.4 54 km NE of Chase, Alaska · 16 km NNE of this epicentre
- 5.1 49 km NE of Chase, Alaska · 11 km NE of this epicentre
- 5.1 50 km N of Chase, Alaska · 21 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 62.7360, -149.6798. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Matanuska-Susitna Borough, AK | 53 km (33 mi) | S | earthquakes near Matanuska-Susitna Borough |
| Denali Borough, AK | 107 km (66 mi) | N | earthquakes near Denali Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.9 30 km NE of Chase, Alaska
- 1.8 48 km NNE of Chase, Alaska
- 1.5 55 km NNE of Chase, Alaska
- 1.5 53 km NNE of Chase, Alaska
- 1.6 60 km N of Chase, Alaska
- 1.9 33 km NE of Chase, Alaska
- 1.6 53 km NNE of Chase, Alaska
- 1.6 36 km NE of Susitna North, Alaska
- 1.5 63 km N of Chase, Alaska
- 1.8 16 km NNE of Chase, Alaska
- 1.9 50 km E of Chase, Alaska
- 2.8 38 km E of Chase, Alaska
- 1.9 59 km SW of Cantwell, Alaska
- 1.5 39 km SSW of Cantwell, Alaska
- 1.5 25 km NNE of Susitna North, 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.