QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Campo, CA

No earthquake was likely felt in Campo in the 24 hours to 8:36 am PST (16:36 UTC). The last one was M 4.9, 122 km (76 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 Campo

This page: a magnitude 1.6 earthquake was recorded 33 km (20 mi) south-southeast of Campo, CA, at 2:05 pm PDT on 18 March 2018 (21:05 UTC), 13 km deep. 2 people have reported feeling it to USGS.

USGS: 33km SSE of Campo, CA

94 km (59 mi) ESE of San Diego, CA

2:05 pm PDT, Mar 18, 2018 · · 13 km deep · released about 7.1 lb of TNT

Every earthquake near Campo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 88 kmImperial County 117 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
2:05 pm PDT on 18 March 2018 ()
Where
33 km (20 mi) south-southeast of Campo, CA · earthquakes near Campo
Magnitude
M 1.6 (ml)
Depth
13 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
San Diego County, 88 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3031 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. In Campo, 33 km away, the estimate is intensity I (not felt). 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 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 lists 4 earthquakes of M5 or more within 50 km:

  1. 6.1 30km ENE of Ensenada, B.C., MX · 46 km S of this epicentre
  2. 5.7 19km ESE of Primo Tapia, B.C., MX · 49 km WSW of this epicentre
  3. 5.6 37km ENE of Ensenada, B.C., MX · 42 km S of this epicentre
  4. 5.4 62km SSW of Progreso, B.C., MX · 49 km SE of this epicentre

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 32.3485, -116.2953. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 88 km (54 mi) NNW earthquakes near San Diego County
Imperial County, CA 117 km (73 mi) NE earthquakes near Imperial County

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

Aftershocks so far

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

  1. 2.2 32km E of Primo Tapia, B.C., MX
  2. 2.6 12km ESE of Pine Valley, CA
  3. 1.6 25km ENE of Primo Tapia, B.C., MX
  4. 2.1 34km ENE of Ensenada, B.C., MX
  5. 2.1 32km NE of Ensenada, B.C., MX
  6. 2.1 34km ENE of Ensenada, B.C., MX
  7. 1.8 45km ENE of Ensenada, B.C., MX
  8. 2.2 24km ESE of Campo, CA
  9. 2.4 31km E of Primo Tapia, B.C., MX
  10. 2.3 53km ENE of Ensenada, B.C., MX
  11. 2.1 36km NE of Ensenada, B.C., MX
  12. 2.0 41km ENE of Ensenada, B.C., MX
  13. 1.9 34km NE of Ensenada, B.C., MX
  14. 1.8 35km ENE of Ensenada, B.C., MX
  15. 2.2 31km ENE of Ensenada, 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.