Earthquake · reviewed by a seismologist
M 1.9md
Earthquake near Ahwahnee, CA
No earthquake was likely felt in Ahwahnee in the 24 hours to 5:51 am PST (13:51 UTC). The last one was M 2.7, 17 km (11 mi) SW, at 7:57 pm PDT on 28 April 2026, estimated intensity II (weak) in town; 25 felt reports to USGS. Every earthquake near Ahwahnee
This page: a magnitude 1.9 earthquake was recorded 9 km (6 mi) north-northwest of Ahwahnee, CA, at 7:59 am PDT on 29 June 2020 (14:59 UTC), 25 km deep.
USGS: 9km NNW of Ahwahnee, CA
73 km (45 mi) N of Fresno, CA · 59 km (37 mi) NNE of Madera, CA
- When
- 7:59 am PDT on 29 June 2020 ()
- Where
- 9 km (6 mi) north-northwest of Ahwahnee, CA · earthquakes near Ahwahnee
- Magnitude
- M 1.9 (md)
- Depth
- 25 km below the surface
- Felt
- no reports yet
- Nearest
- Mariposa County, 20 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2326 days ago
Earthquake alerts for Ahwahnee, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 Ahwahnee, 9 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.
Earthquakes near other towns within 30 km: Oakhurst, Midpines, Mariposa, Coarsegold, Yosemite Lakes.
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 5.8 730,000× the energy of this one
- Magna, Utah 2020 M 5.7 520,000× the energy of this one
- Around the size people start to feel M 3.0 46× 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.
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 37.4352, -119.7752. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mariposa County, CA | 20 km (12 mi) | NW | earthquakes near Mariposa County |
| Madera County, CA | 25 km (16 mi) | S | earthquakes near Madera County |
| Tuolumne County, CA | 67 km (42 mi) | NNW | earthquakes near Tuolumne County |
| Fresno County, CA | 76 km (47 mi) | S | earthquakes near Fresno County |
| Merced County, CA | 88 km (55 mi) | WSW | earthquakes near Merced County |
| Mono County, CA | 96 km (59 mi) | NE | earthquakes near Mono County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.6 23km SE of Yosemite Valley, CA
- 2.5 20km SE of Yosemite Valley, CA
- 1.6 20km SE of Yosemite Valley, CA
- 2.5 20km SE of Yosemite Valley, CA
- 1.8 21km SE of Yosemite Valley, CA
- 2.3 16km SSW of Bootjack, CA
- 1.6 20km SE of Yosemite Valley, CA
- 2.7 19km SE of Yosemite Valley, CA
- 2.6 20km SE of Yosemite Valley, CA
- 2.8 19km SE of Yosemite Valley, CA
- 1.6 20km SE of Yosemite Valley, CA
- 2.3 20km ESE of Yosemite Valley, CA
- 1.9 18km SE of Yosemite Valley, CA
- 2.6 20km SE of Yosemite Valley, CA
- 2.5 19km SE of Yosemite Valley, 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
- 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.