Earthquake · reviewed by a seismologist
M 2.1ml
11km S of Progreso, B.C., MX
Yes. A magnitude 2.1 earthquake was recorded 11km S of Progreso, B.C., MX, at 5:43 am PDT on 18 March 2018 (12:43 UTC), 9.8 km deep.
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 9.8 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 66 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3030 days ago
Earthquake alerts for Calexico, 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, people at rest would likely notice it out to about 15 km (9 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: Calexico, Heber.
How big was it?
This earthquake released about 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
- Magna, Utah 2020 M 5.7 230,000× the energy of this one
- Around the size people start to feel M 3.0 20× the energy of this one
- This earthquake M 2.1 about 47 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.
Where
Epicentre 32.4848, -115.5945. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 66 km (41 mi) | NNE | earthquakes near Imperial County |
| San Diego County, CA | 126 km (78 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
59 earthquakes have been recorded within 50 km since this one.
- 2.2 6km ESE of Ocotillo, CA
- 1.6 16km SE of Ocotillo, CA
- 2.7 4km SW of Delta, B.C., MX
- 1.7 16km SE of Ocotillo, CA
- 3.0 15km SE of Ocotillo, CA
- 1.9 8km NW of Delta, B.C., MX
- 2.4 9km S of Progreso, B.C., MX
- 2.5 12km WNW of Alberto Oviedo Mota, B.C., MX
- 2.0 4km NNE of Heber, CA
- 2.1 12km SW of Delta, B.C., MX
- 2.0 11km ESE of Puebla, B.C., MX
- 2.4 8km NNW of Delta, B.C., MX
- 1.6 11km S of Progreso, B.C., MX
- 1.6 2km ESE of El Centro, CA
- 1.9 2km ESE of El Centro, 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.