Earthquake near Oakhurst, CA

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 11 km (7 mi) from the epicentre. In Oakhurst, 27 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.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
3. Around the size people start to feel M 3.0 150× the energy of this one
4. This earthquake M 1.6 about 6.4 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 4.0 on 2020-04-05 — about 5,600 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

1. 5.9 11 km SE of Mammoth Lakes, California · 49 km ENE of this epicentre Sep 30, 1981
2. 5.7 14 km WSW of Aspen Springs, California · 45 km ENE of this epicentre May 26, 1980
3. 5.4 12 km SE of Mammoth Lakes, California · 47 km ENE of this epicentre Aug 1, 1980
4. 5.4 6 km ESE of Mammoth Lakes, California · 48 km NE of this epicentre Jan 7, 1983
5. 5.3 3 km SE of Mammoth Lakes, California · 46 km NE of this epicentre Jan 7, 1983

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 37.3768, -119.3515. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.8 18km WSW of Toms Place, CA 14:02 UTC
2. 2.4 17km WSW of Toms Place, CA 13:59 UTC
3. 1.9 15km SE of Yosemite Valley, CA 22:09 UTC
4. 1.6 32km NE of North Fork, CA 08:40 UTC
5. 3.1 15km WSW of Toms Place, CA 17:22 UTC
6. 2.6 15km WSW of Toms Place, CA 17:05 UTC
7. 1.5 2km E of Mammoth Lakes, CA 07:29 UTC
8. 1.9 6km NW of North Fork, CA 02:41 UTC
9. 2.0 8km SE of Oakhurst, CA 02:41 UTC
10. 1.5 27km S of Mammoth Lakes, CA 12:53 UTC
11. 2.8 14km NNE of Shaver Lake, CA 22:35 UTC
12. 1.9 7km E of Mammoth Lakes, CA 19:35 UTC
13. 2.1 7km E of Mammoth Lakes, CA 19:34 UTC
14. 1.5 16km ESE of Yosemite Valley, CA 03:14 UTC
15. 1.8 20km ESE of Yosemite Valley, CA 10:27 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 10:38 UTC. 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.