Earthquake near Yosemite Valley, 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 Yosemite Valley, 21 km away, the estimate is intensity II (weak). 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 10 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 1,500,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
3. Around the size people start to feel M 3.0 95× the energy of this one
4. This earthquake M 1.7 about 10 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 8 earthquakes of M5 or more within 50 km; the five largest:

1. 6.0 7 km ENE of Mammoth Lakes, California · 46 km E of this epicentre May 25, 1980
2. 5.9 8 km NNE of Mammoth Lakes, California · 45 km ENE of this epicentre Sep 18, 1927
3. 5.9 11 km SE of Mammoth Lakes, California · 48 km E of this epicentre Sep 30, 1981
4. 5.7 14 km WSW of Aspen Springs, California · 48 km E of this epicentre May 26, 1980
5. 5.4 12 km SE of Mammoth Lakes, California · 48 km E of this epicentre Aug 1, 1980

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 37.6005, -119.4122. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.7 15 km SSE of Mammoth Lakes, CA 16:43 UTC
2. 1.6 26 km SSW of Mammoth Lakes, CA 21:20 UTC
3. 1.7 17 km W of Toms Place, CA 19:31 UTC
4. 2.5 15 km SSE of Mammoth Lakes, CA 08:19 UTC
5. 1.8 15 km SSE of Mammoth Lakes, CA 02:17 UTC
6. 2.4 15 km SSE of Mammoth Lakes, CA 02:17 UTC
7. 2.0 11 km ENE of North Fork, CA 09:57 UTC
8. 1.7 30 km NE of North Fork, CA 09:56 UTC
9. 1.6 34 km NE of North Fork, CA 03:27 UTC
10. 1.5 20 km SE of Yosemite Valley, CA 18:47 UTC
11. 2.1 7 km SSE of Oakhurst, CA 10:15 UTC
12. 1.8 18 km SE of Yosemite Valley, CA 12:39 UTC
13. 2.2 20 km ESE of Yosemite Valley, CA 21:05 UTC
14. 1.7 24 km SE of Yosemite Valley, CA 00:04 UTC
15. 2.3 16 km SE of Yosemite Valley, CA 14:27 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 23:34 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.