QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Anza, CA

No earthquake was likely felt in Anza in the 24 hours to 3:02 am PST (11:02 UTC). The last one was M 2.6, 17 km (10 mi) S, at 10:44 pm PST on 5 November 2026, estimated intensity II (weak) in town; 7 felt reports to USGS. Every earthquake near Anza

This page: a magnitude 2.6 earthquake was recorded 23 km (14 mi) east-southeast of Anza, CA, at 6:32 am PDT on 26 March 2019 (13:32 UTC), 9.5 km deep. 17 people have reported feeling it to USGS.

USGS: 23km ESE of Anza, CA

98 km (61 mi) NE of San Diego, CA · 29 km (18 mi) SSW of Palm Desert, CA

6:32 am PDT, Mar 26, 2019 · · 9.5 km deep · released about 280 lb of TNT

Every earthquake near Anza Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 49 kmSan Diego County 60 kmImperial County 113 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
6:32 am PDT on 26 March 2019 ()
Where
23 km (14 mi) east-southeast of Anza, CA · earthquakes near Anza
Magnitude
M 2.6 (ml)
Depth
9.5 km below the surface
Felt
17 reports · strongest reported intensity III
Nearest
Riverside County, 49 km ENE
Nearest mapped fault
San Jacinto fault, 1 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 2787 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 22 km (14 mi) from the epicentre. In Anza, 23 km away, the estimate is intensity II (weak). 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: La Quinta, Vista Santa Rosa, Borrego Springs, Palm Desert, Indian Wells, Rancho Mirage.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 55,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 39,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.5× the energy of this one
  4. This earthquake M 2.6 about 280 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

The largest earthquake within 50 km since 2016 was M 5.2 on 2016-06-10 — about 6,700 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 The 1968 Borrego Mountain, California Earthquake · 46 km SE of this epicentre
  2. 6.4 The 1954 San Jacinto Fault, California Earthquake · 40 km ESE of this epicentre
  3. 6.0 16km WSW of Oasis, CA · 20 km ESE of this epicentre
  4. 5.7 Eastern San Diego County, California · 45 km SE of this epicentre
  5. 5.5 8km NNE of Ocotillo Wells, CA · 44 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 33.4853, -116.4440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Riverside County, CA 49 km (31 mi) ENE earthquakes near Riverside County
San Diego County, CA 60 km (37 mi) SSW earthquakes near San Diego County
Imperial County, CA 113 km (70 mi) ESE earthquakes near Imperial County

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

Aftershocks so far

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

  1. 1.6 8km NNW of Borrego Springs, CA
  2. 2.0 7km NE of Borrego Springs, CA
  3. 1.9 8km SE of Valle Vista, CA
  4. 3.5 10km NE of Ocotillo Wells, CA
  5. 2.5 8km NNW of Borrego Springs, CA
  6. 1.6 12km N of Ocotillo Wells, CA
  7. 1.7 8km NNW of Borrego Springs, CA
  8. 1.7 11km NE of Ocotillo Wells, CA
  9. 1.9 8km NNW of Borrego Springs, CA
  10. 2.2 10km NW of Anza, CA
  11. 2.5 8km NNW of Borrego Springs, CA
  12. 1.7 4km NNW of Ocotillo Wells, CA
  13. 1.5 4km N of Ocotillo Wells, CA
  14. 1.5 8km NE of Aguanga, CA
  15. 2.1 10km ENE of Pala, CA

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.