22 km E of Walker, California

2017-09-29 09:09 UTC · 40 km deep · released about 21 lb of TNT

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: 2017-09-29 09:09 UTC
Magnitude: M 1.9 (ml)
Depth: 40 km below the surface
Felt: no reports yet
Nearest: Alpine County, 52 km WNW
Status: Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS 3286 days ago · we first saw it 3286 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
Magna, Utah 2020 M 5.7 500,000× the energy of this one
Around the size people start to feel M 3.0 45× the energy of this one
This earthquake M 1.9 about 21 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.

Where

Map loads when it scrolls into view

Epicentre 38.4923, -119.2245. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Alpine County, CA	52 km (32 mi)	ESE of here	earthquakes near Alpine County
Douglas County, NV	57 km (35 mi)	SE of here	earthquakes near Douglas County
Lyon County, NV	59 km (37 mi)	S of here	earthquakes near Lyon County
Mineral County, NV	70 km (44 mi)	W of here	earthquakes near Mineral County
Mono County, CA	71 km (44 mi)	NNW of here	earthquakes near Mono County
Tuolumne County, CA	83 km (52 mi)	NE of here	earthquakes near Tuolumne County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

1.5 25 km SSW of Hawthorne, Nevada 09:46 UTC
1.5 26 km SSW of Hawthorne, Nevada 08:49 UTC
1.5 25 km SSW of Hawthorne, Nevada 08:01 UTC
1.5 26 km SSW of Hawthorne, Nevada 05:30 UTC
1.6 26 km SSW of Hawthorne, Nevada 02:16 UTC
1.5 25 km SSW of Hawthorne, Nevada 01:29 UTC
1.7 26 km SSW of Hawthorne, Nevada 01:14 UTC
1.5 26 km SSW of Hawthorne, Nevada 22:12 UTC
1.5 25 km SSW of Hawthorne, Nevada 22:03 UTC
1.6 7 km SW of Hawthorne, Nevada 21:20 UTC
1.5 30 km ENE of Bridgeport, California 14:47 UTC
1.6 29 km WSW of Hawthorne, Nevada 02:55 UTC
1.7 5 km WNW of Topaz Lake, Nevada 01:57 UTC
1.5 31 km SSW of Hawthorne, Nevada 04:46 UTC
1.5 29 km SSW of Hawthorne, Nevada 14:46 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 22:44 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 5.6 on 2016-12-28 — it released about 350,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

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.