QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Green Acres, CA

No earthquake was likely felt in Green Acres in the 24 hours to 11:46 am PST (19:46 UTC). The last one was M 2.8, 13 km (8 mi) NE, at 8:30 pm PDT on 14 October 2026, estimated intensity II (weak) in town; 87 felt reports to USGS. Every earthquake near Green Acres

This page: a magnitude 2.5 earthquake was recorded 7 km (5 mi) north-northeast of Green Acres, CA, at 11:38 am PDT on 3 June 2018 (18:38 UTC), 15 km deep. 22 people have reported feeling it to USGS.

USGS: 7km NNE of Green Acres, CA

in San Jacinto, CA · 128 km (80 mi) E of Los Angeles, CA

11:38 am PDT, Jun 3, 2018 · · 15 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Orange County 69 kmSan Diego County 90 kmRiverside County 97 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
11:38 am PDT on 3 June 2018 ()
Where
7 km (5 mi) north-northeast of Green Acres, CA · earthquakes near Green Acres
Magnitude
M 2.5 (ml)
Depth
15 km below the surface
Felt
22 reports · strongest reported intensity III
Nearest
Orange County, 69 km W
Nearest mapped fault
San Jacinto fault, 11 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 3031 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 17 km (11 mi) from the epicentre. In Green Acres, 7 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.

Likely felt in: San Jacinto 8 km, intensity II · Hemet 9 km, intensity II · Menifee 12 km, intensity II · Valle Vista 15 km, intensity II · Beaumont 16 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 4.5 on 2018-05-08 — about 970 times the energy of this one.

Before 2016, the USGS record lists 19 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1918 San Jacinto, California Earthquake · 8 km ESE of this epicentre
  2. 6.3 The 1992 Big Bear, California Earthquake · 49 km NNE of this epicentre
  3. 6.2 3 km SE of San Bernardino, California · 38 km NNW of this epicentre
  4. 6.0 The 1910 Lake Elsinore, California Earthquake · 35 km WSW of this epicentre
  5. 6.0 The 1986 North Palm Springs, California Earthquake · 46 km ENE 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 33.7982, -117.0452. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 69 km (43 mi) W earthquakes near Orange County
San Diego County, CA 90 km (56 mi) SSE earthquakes near San Diego County
Riverside County, CA 97 km (60 mi) E earthquakes near Riverside County
Los Angeles County, CA 121 km (75 mi) WNW earthquakes near Los Angeles County
San Bernardino County, CA 142 km (88 mi) NNE earthquakes near San Bernardino County

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

Aftershocks so far

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

  1. 1.8 9km NE of Aguanga, CA
  2. 1.7 3km SE of Loma Linda, CA
  3. 1.6 4km SE of Home Gardens, CA
  4. 2.0 8km NE of Aguanga, CA
  5. 1.6 8km NE of Aguanga, CA
  6. 1.5 16km N of Cabazon, CA
  7. 1.5 8km ENE of Cabazon, CA
  8. 2.0 2km SE of Loma Linda, CA
  9. 1.9 8km ENE of Aguanga, CA
  10. 1.6 12km SW of Idyllwild, CA
  11. 1.9 8km NE of Aguanga, CA
  12. 1.8 4km W of Banning, CA
  13. 2.3 12km N of Cabazon, CA
  14. 1.5 8km NE of Aguanga, CA
  15. 1.5 8km NE of Aguanga, 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.