QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

17km WNW of Progreso, B.C., MX

Yes. A magnitude 1.9 earthquake was recorded 17km WNW of Progreso, B.C., MX, at 8:38 pm PST on 5 March 2023 (04:38 UTC), 9.0 km deep.

· 9.0 km deep · released about 23 lb of TNT

10 km30 km60 km120 km N Imperial County 56 kmSan Diego County 105 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 1.9 (ml)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Imperial County, 56 km NE
Nearest mapped fault
Yuha Basin faults, 6 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 1340 days ago

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 12 km (7 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.

Earthquakes near other towns within 30 km: Seeley, Heber, Calexico, El Centro, Imperial.

How big was it?

This earthquake released about 23 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.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 33,000 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 32.6497, -115.7410. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Imperial County, CA 56 km (35 mi) NE earthquakes near Imperial County
San Diego County, CA 105 km (65 mi) WNW earthquakes near San Diego County

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

Aftershocks so far

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

  1. 3.2 17km SE of Ocotillo Wells, CA
  2. 1.6 7km S of Brawley, CA
  3. 2.3 17km SE of Ocotillo Wells, CA
  4. 1.8 24km ESE of Ocotillo Wells, CA
  5. 1.6 20km SE of Ocotillo, CA
  6. 2.6 15km WSW of Heber, CA
  7. 1.8 4km SW of Imperial, CA
  8. 3.5 8km SSW of Progreso, B.C., MX
  9. 1.9 8km NE of Imperial, CA
  10. 1.5 7km SSW of Mexicali, B.C., MX
  11. 2.5 10km S of Progreso, B.C., MX
  12. 3.6 10km S of Progreso, B.C., MX
  13. 1.7 16km WNW of Progreso, B.C., MX
  14. 1.8 8km SW of Holtville, CA
  15. 1.9 7km SSW of Progreso, B.C., MX

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.