QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

9 km NNW of Progreso, B.C., MX

Yes. A magnitude 3.0 earthquake was recorded 9 km NNW of Progreso, B.C., MX, at 12:30 am PDT on 20 August 2024 (07:30 UTC), 11 km deep. 17 people have reported feeling it to USGS.

· 11 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 48 kmSan Diego County 117 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
Magnitude
M 3.0 (ml)
Depth
11 km below the surface
Felt
17 reports · strongest reported intensity III
Nearest
Imperial County, 48 km NNE
Nearest mapped fault
Yuha Basin faults, 19 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 740 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 33 km (21 mi) from the epicentre. 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.

Likely felt in: Calexico 10 km, intensity III · El Centro 15 km, intensity II · Imperial 21 km, intensity II · Holtville 27 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 830 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 in our catalogue was M 4.9 on 2020-10-01 — about 900 times the energy of this one.

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 32.6583, -115.6045. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Imperial County, CA 48 km (30 mi) NNE earthquakes near Imperial County
San Diego County, CA 117 km (73 mi) WNW earthquakes near San Diego County
Riverside County, CA 125 km (78 mi) NNW earthquakes near Riverside County

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

Aftershocks so far

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

  1. 2.0 11 km E of Puebla, B.C., MX
  2. 2.5 10 km NE of Mexicali, B.C., MX
  3. 2.9 9 km NE of Mexicali, B.C., MX
  4. 1.8 9 km NE of Mexicali, B.C., MX
  5. 1.9 9 km ESE of Puebla, B.C., MX
  6. 2.5 6 km NE of Puebla, B.C., MX
  7. 1.6 6 km NE of Puebla, B.C., MX
  8. 2.6 6 km NNE of Puebla, B.C., MX
  9. 1.8 6 km NNE of Puebla, B.C., MX
  10. 1.9 5 km NE of Puebla, B.C., MX
  11. 1.6 6 km NNE of Puebla, B.C., MX
  12. 1.6 4 km E of Puebla, B.C., MX
  13. 1.5 6 km NNW of Delta, B.C., MX
  14. 1.7 15 km ENE of Ocotillo, CA
  15. 2.3 14 km ENE of Ocotillo, 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.