QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

60 km E of Big Pine, California

Yes. A magnitude 1.7 earthquake was recorded 60 km E of Big Pine, California, at 7:11 pm PDT on 28 July 2019 (02:11 UTC), 9.7 km deep.

· 9.7 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Inyo County 67 kmEsmeralda County 71 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
Magnitude
M 1.7 (ml)
Depth
9.7 km below the surface
Felt
no reports yet
Nearest
Inyo County, 67 km SSE
Nearest mapped fault
Fish Lake Valley fault, 7 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2663 days ago

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. 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 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 6.1 46km E of Big Pine, California · 14 km W 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 37.1434, -117.6137. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 67 km (42 mi) SSE earthquakes near Inyo County
Esmeralda County, NV 71 km (44 mi) N earthquakes near Esmeralda County
Nye County, NV 137 km (85 mi) NE earthquakes near Nye County
Mono County, CA 141 km (87 mi) NW earthquakes near Mono County
Tulare County, CA 146 km (90 mi) SW earthquakes near Tulare County

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

Aftershocks so far

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

  1. 2.3 25 km SSW of Silver Peak, Nevada
  2. 4.0 25 km SSW of Silver Peak, Nevada
  3. 3.0 25 km SSW of Silver Peak, Nevada
  4. 1.5 41 km SSE of Goldfield, Nevada
  5. 2.4 34km ENE of Lone Pine, CA
  6. 1.9 31 km SSE of Dyer, Nevada
  7. 2.1 29km ESE of Big Pine, CA
  8. 1.6 39 km S of Goldfield, Nevada
  9. 1.8 52 km SSW of Goldfield, Nevada
  10. 2.3 50 km S of Silver Peak, Nevada
  11. 2.2 55km WNW of Beatty, NV
  12. 1.5 41 km ENE of Independence, California
  13. 2.1 34 km S of Goldfield, Nevada
  14. 2.4 35 km S of Goldfield, Nevada
  15. 1.9 39 km S of Silver Peak, Nevada

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.