Earthquake · reviewed by a seismologist
M 2.2ml
18km W of Delta, B.C., MX
Yes. A magnitude 2.2 earthquake was recorded 18km W of Delta, B.C., MX, 84 km (52 mi) WSW of Yuma, AZ, at 12:46 pm PDT on 12 September 2017 (19:46 UTC), 10 km deep.
84 km (52 mi) WSW of Yuma, AZ
- When
- Magnitude
- M 2.2 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 79 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3304 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.
How big was it?
This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
- Magna, Utah 2020 M 5.7 190,000× the energy of this one
- Around the size people start to feel M 3.0 17× the energy of this one
- This earthquake M 2.2 about 56 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 32.3285, -115.3850. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 79 km (49 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.
- 2.2 13km WSW of Delta, B.C., MX
- 1.9 17km WSW of Delta, B.C., MX
- 1.6 14km WNW of Progreso, B.C., MX
- 2.1 11km S of Progreso, B.C., MX
- 1.8 10km S of Progreso, B.C., MX
- 2.0 12km NW of Progreso, B.C., MX
- 1.5 8km W of Progreso, B.C., MX
- 2.7 10km ESE of Puebla, B.C., MX
- 2.5 15km W of Delta, B.C., MX
- 2.0 8km W of Alberto Oviedo Mota, B.C., MX
- 1.7 8km SW of Holtville, CA
- 1.6 7km SW of Holtville, CA
- 1.8 6km SW of Progreso, B.C., MX
- 1.6 16km S of Progreso, B.C., MX
- 2.3 10km S 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
- 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.