quarry blast · reviewed by a seismologist
M 1.8mh
19 km ESE of Tijuana, B.C., MX
No: USGS classifies this as a quarry blast, not an earthquake. A magnitude 1.8 quarry blast was recorded 19 km ESE of Tijuana, B.C., MX, 49 km (31 mi) SSE of San Diego, CA, at 1:02 pm PDT on 13 May 2024 (20:02 UTC), less than 1 km deep.
49 km (31 mi) SSE of San Diego, CA · 26 km (16 mi) SE of Chula Vista, CA
- When
- Magnitude
- M 1.8 (mh)
- Depth
- -0.7 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 65 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 721 days ago
Earthquake alerts for Bonita, 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 14 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: Bonita, Imperial Beach.
USGS catalogues this as quarry blast, not an earthquake.
How big was it?
This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 710,000× the energy of this one
- Around the size people start to feel M 3.0 63× the energy of this one
- This earthquake M 1.8 about 15 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 32.4433, -116.8460. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 65 km (40 mi) | N | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
41 earthquakes have been recorded within 50 km since this one.
- 1.8 39 km SSE of Campo, CA
- 2.2 11 km W of Pine Valley, CA
- 1.8 11 km W of Pine Valley, CA
- 1.5 11 km W of Pine Valley, CA
- 1.8 11 km W of Pine Valley, CA
- 1.8 11 km W of Pine Valley, CA
- 1.5 11 km W of Pine Valley, CA
- 1.6 11 km WSW of Pine Valley, CA
- 1.5 24 km NNE of El Sauzal, B.C., MX
- 1.7 11 km W of Pine Valley, CA
- 1.8 3 km WNW of National City, CA
- 2.1 17 km SW of Rosarito, B.C., MX
- 1.5 3 km SE of Tijuana, B.C., MX
- 1.6 9 km S of Jamul, CA
- 1.6 15 km SW of Tecate, 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.