QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Phoenix Lake, CA

No earthquake was likely felt in Phoenix Lake in the 24 hours to 4:58 am PST (12:58 UTC). The last one was M 5.2, 181 km (113 mi) NE, at 1:17 am PDT on 1 May 2026, estimated intensity II (weak) in town; 1,875 felt reports to USGS. Every earthquake near Phoenix Lake

This page: a magnitude 2.0 earthquake was recorded 33 km (20 mi) southeast of Phoenix Lake, CA, at 11:47 pm PDT on 20 October 2016 (06:47 UTC), 33 km deep.

USGS: 2 km SE of Buck Meadows, California

11:47 pm PDT, Oct 20, 2016 · · 33 km deep · released about 26 lb of TNT

10 km30 km60 km120 km N Tuolumne County 26 kmMariposa County 27 kmCalaveras County 63 kmMadera County 70 kmStanislaus County 88 kmMerced County 90 kmAmador County 90 kmAlpine County 94 kmMono County 104 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
11:47 pm PDT on 20 October 2016 ()
Where
33 km (20 mi) southeast of Phoenix Lake, CA · earthquakes near Phoenix Lake
Magnitude
M 2.0 (md)
Depth
33 km below the surface
Felt
no reports yet
Nearest
Tuolumne County, 26 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3562 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Phoenix Lake, 33 km away, the estimate is intensity I (not felt). 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: Tuolumne City, Soulsbyville, Midpines.

How big was it?

This earthquake released about 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 37.7945, -120.0447. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Tuolumne County, CA 26 km (16 mi) NNE earthquakes near Tuolumne County
Mariposa County, CA 27 km (17 mi) SSE earthquakes near Mariposa County
Calaveras County, CA 63 km (39 mi) NW earthquakes near Calaveras County
Madera County, CA 70 km (44 mi) SSE earthquakes near Madera County
Stanislaus County, CA 88 km (55 mi) WSW earthquakes near Stanislaus County
Merced County, CA 90 km (56 mi) SW earthquakes near Merced County

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

Aftershocks so far

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

  1. 3.0 13km S of Mariposa, CA
  2. 1.6 10km S of Bootjack, CA
  3. 1.6 10km S of Bootjack, CA
  4. 1.9 3km WNW of Chinese Camp, CA
  5. 2.3 14km S of Groveland-Big Oak Flat, CA
  6. 2.0 9km SW of Mariposa, CA
  7. 2.0 11km SSW of Mariposa, CA
  8. 1.6 4km ESE of Mariposa, CA
  9. 1.7 4 km SSE of Vallecito, California
  10. 1.5 Northern California
  11. 1.5 4 km WNW of Tuttletown, California
  12. 2.0 10km NW of Midpines, CA
  13. 1.5 4 km ESE of Vallecito, California
  14. 1.6 2 km ESE of Vallecito, California
  15. 2.0 11km SSW of Bootjack, CA

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.