QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Parkwood, CA

No earthquake was likely felt in Parkwood in the 24 hours to 4:45 am PST (12:45 UTC). The last one was M 2.6, 9 km (5 mi) NW, at 5:14 am PDT on 29 October 2026, estimated intensity II (weak) in town. Every earthquake near Parkwood

This page: a magnitude 2.9 earthquake was recorded 5 km (3 mi) west of Parkwood, CA, at 1:10 pm PDT on 23 September 2024 (20:10 UTC), 15 km deep. 5 people have reported feeling it to USGS.

USGS: 5 km W of Parkwood, CA

5 km (3 mi) S of Madera, CA · 31 km (19 mi) WNW of Fresno, CA

1:10 pm PDT, Sep 23, 2024 · · 15 km deep · released about 680 lb of TNT

10 km30 km60 km120 km N Fresno County 43 kmMadera County 44 kmMerced County 64 kmMariposa County 75 kmSan Benito County 95 kmKings County 97 kmStanislaus County 108 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
1:10 pm PDT on 23 September 2024 ()
Where
5 km (3 mi) west of Parkwood, CA · earthquakes near Parkwood
Magnitude
M 2.9 (md)
Depth
15 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Fresno County, 43 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 706 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 28 km (17 mi) from the epicentre. In Parkwood, 5 km away, the estimate is intensity III (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: Madera, Parksdale, Madera Acres, Biola, Fairmead, Bonadelle Ranchos-Madera Ranchos.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 36.9195, -120.0948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Fresno County, CA 43 km (27 mi) ESE earthquakes near Fresno County
Madera County, CA 44 km (28 mi) NE earthquakes near Madera County
Merced County, CA 64 km (40 mi) WNW earthquakes near Merced County
Mariposa County, CA 75 km (46 mi) NNE earthquakes near Mariposa County
San Benito County, CA 95 km (59 mi) WSW earthquakes near San Benito County
Kings County, CA 97 km (61 mi) SSE earthquakes near Kings 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. 2.2 17 km NW of Yosemite Lakes, CA
  2. 2.1 12 km NNW of Friant, CA
  3. 2.1 17 km NW of Yosemite Lakes, CA
  4. 2.7 6 km WSW of Friant, CA
  5. 1.8 12 km S of Yosemite Lakes, CA
  6. 2.5 6 km E of Cantua Creek, CA
  7. 2.1 7 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  8. 2.3 11 km S of Yosemite Lakes, CA
  9. 2.3 1 km W of Madera, CA
  10. 1.8 12 km NNW of Friant, CA
  11. 2.3 12 km E of Cantua Creek, CA
  12. 2.0 2 km ESE of Yosemite Lakes, CA
  13. 2.5 3 km SE of Yosemite Lakes, CA
  14. 2.0 13 km WSW of Madera, CA
  15. 1.9 6 km SSW of Yosemite Lakes, 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.