QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Jamul, CA

No earthquake was likely felt in Jamul in the 24 hours to 5:38 am PST (13:38 UTC). The last one was M 4.9, 162 km (101 mi) E, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Jamul

This page: a magnitude 1.5 earthquake was recorded in Jamul, CA, at 9:30 am PST on 2 March 2020 (17:30 UTC), 15 km deep.

USGS: 1km SE of Jamul, CA

28 km (17 mi) ESE of San Diego, CA · 13 km (8 mi) SE of El Cajon, CA

9:30 am PST, Mar 2, 2020 · · 15 km deep · released about 6.2 lb of TNT

10 km30 km60 km120 km N San Diego County 36 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
9:30 am PST on 2 March 2020 ()
Where
in Jamul, CA · earthquakes near Jamul
Magnitude
M 1.5 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
San Diego County, 36 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2390 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. 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: Rancho San Diego, Crest, Granite Hills, Casa de Oro-Mount Helix, La Presa, Bostonia.

How big was it?

This earthquake released about 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 32.7097, -116.8673. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 36 km (22 mi) NNE earthquakes near San Diego County
Orange County, CA 137 km (85 mi) NW earthquakes near Orange County
Riverside County, CA 139 km (86 mi) NE earthquakes near Riverside County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

27 earthquakes have been recorded within 50 km since this one.

  1. 1.6 13km SW of Coronado, CA
  2. 1.6 9km E of San Diego Country Estates, CA
  3. 1.6 5km ESE of Chula Vista, CA
  4. 1.7 2km WNW of Julian, CA
  5. 3.3 14km SW of Coronado, CA
  6. 1.7 2km SSW of San Ysidro, CA
  7. 1.5 17km NNE of Primo Tapia, B.C., MX
  8. 1.8 7km SE of Bonita, CA
  9. 1.7 7km ESE of Chula Vista, CA
  10. 1.6 5km ESE of Bonita, CA
  11. 1.5 6km SE of Bonita, CA
  12. 1.6 6km NW of Julian, CA
  13. 1.5 6km ESE of Chula Vista, CA
  14. 1.6 5km NE of Rancho San Diego, CA
  15. 1.7 22km NNE 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.