quarry blast · reviewed by a seismologist
M 2.0ml
13km NW of Rosarito, B.C., MX
No: USGS classifies this as a quarry blast, not an earthquake. A magnitude 2.0 quarry blast was recorded 13km NW of Rosarito, B.C., MX, 45 km (28 mi) S of San Diego, CA, at 12:29 pm PDT on 2 November 2021 (19:29 UTC), less than 1 km deep.
45 km (28 mi) S of San Diego, CA · 27 km (17 mi) SSW of Chula Vista, CA
- When
- Magnitude
- M 2.0 (ml)
- Depth
- -0.4 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 76 km NNE
- Nearest mapped fault
- Newport-Inglewood-Rose Canyon fault, 15 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 1836 days ago
Earthquake alerts for Imperial Beach, 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 16 km (10 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: Imperial Beach, Chula Vista, Bonita.
USGS catalogues this as quarry blast, not an earthquake.
How big was it?
This earthquake released about 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
- Magna, Utah 2020 M 5.7 310,000× the energy of this one
- Around the size people start to feel M 3.0 28× the energy of this one
- This earthquake M 2.0 about 35 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 32.4093, -117.1340. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 76 km (47 mi) | NNE | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 1.5 1km ESE of San Ysidro, CA
- 1.6 45 km WSW of Coronado, CA
- 1.5 5km NE of Rancho San Diego, CA
- 2.0 55 km W of Rosarito, B.C., MX
- 1.8 3km NE of Rancho San Diego, CA
- 1.9 39km SW of Rosarito, B.C., MX
- 1.8 7km ESE of Tijuana, B.C., MX
- 1.6 6km ENE of Rancho San Diego, CA
- 2.4 45km WSW of Coronado, CA
- 1.6 6km E of Chula Vista, CA
- 1.6 20km ESE of Tijuana, B.C., MX
- 1.7 10km SW of La Jolla, CA
- 1.6 4km NE of San Ysidro, CA
- 2.4 15km SW of La Jolla, CA
- 1.6 7km SW of Primo Tapia, 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.