Earthquake · reviewed by a seismologist
M 2.8ml
21km SSW of Puebla, B.C., MX
Yes. A magnitude 2.8 earthquake was recorded 21km SSW of Puebla, B.C., MX, at 5:14 am PDT on 12 April 2017 (12:14 UTC), 16 km deep. 1 person has reported feeling it to USGS.
- When
- Magnitude
- M 2.8 (ml)
- Depth
- 16 km below the surface
- Felt
- 1 report · strongest reported intensity I
- Nearest
- Imperial County, 72 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3467 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 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 24 km (15 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.
How big was it?
This earthquake released about 530 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 29,000× the energy of this one
- Magna, Utah 2020 M 5.7 20,000× the energy of this one
- Around the size people start to feel M 3.0 1.8× the energy of this one
- This earthquake M 2.8 about 530 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 32.3940, -115.4495. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 72 km (45 mi) | N | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
50 earthquakes have been recorded within 50 km since this one.
- 2.0 8km SSW of Progreso, B.C., MX
- 1.9 4km WSW of Progreso, B.C., MX
- 2.2 7km WNW of Alberto Oviedo Mota, B.C., MX
- 2.1 2km ESE of Delta, B.C., MX
- 1.6 9km S of Progreso, B.C., MX
- 1.5 13km W of Progreso, B.C., MX
- 1.5 9km NE of Mexicali, B.C., MX
- 3.0 1km SW of Delta, B.C., MX
- 1.8 8km SSW of Holtville, CA
- 2.2 8km ENE of Calexico, CA
- 2.9 7km NNW of Delta, B.C., MX
- 1.8 4km NE of Progreso, B.C., MX
- 2.1 17km SSE of Progreso, B.C., MX
- 1.7 10km S of Progreso, B.C., MX
- 2.0 9km NNW of Delta, 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
- 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.