QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Hesperia, CA

No earthquake was likely felt in Hesperia in the 24 hours to 8:35 am PST (16:35 UTC). The last one was M 4.3, 109 km (68 mi) NNW, at 9:40 am PDT on 13 July 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Hesperia

This page: a magnitude 1.8 earthquake was recorded 10 km (6 mi) south-southeast of Hesperia, CA, at 7:35 am PDT on 10 May 2024 (14:35 UTC), 5.0 km deep.

USGS: 10 km SSE of Hesperia, CA

7 km (4 mi) SE of Hesperia, CA · 111 km (69 mi) ENE of Los Angeles, CA

7:35 am PDT, May 10, 2024 · · 5.0 km deep · released about 16 lb of TNT

10 km30 km60 km120 km N Orange County 88 kmLos Angeles County 93 kmSan Bernardino County 115 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
7:35 am PDT on 10 May 2024 ()
Where
10 km (6 mi) south-southeast of Hesperia, CA · earthquakes near Hesperia
Magnitude
M 1.8 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Orange County, 88 km SSW
Nearest mapped fault
North Frontal thrust system, 2 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 916 days ago

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 13 km (8 mi) from the epicentre. In Hesperia, 10 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: Hesperia 10 km, intensity II · Lake Arrowhead 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 4.2 on 2024-01-25 — about 4,300 times the energy of this one.

Before 2016, the USGS record lists 14 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.3 The 1992 Big Bear, California Earthquake · 44 km ESE of this epicentre
  2. 6.2 3 km SE of San Bernardino, California · 28 km S of this epicentre
  3. 5.6 7km ENE of Running Springs, CA · 24 km ESE of this epicentre
  4. 5.5 The 1990 Upland, California Earthquake · 45 km WSW of this epicentre
  5. 5.5 11km SSE of Big Bear Lake, California · 43 km ESE 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 34.3438, -117.2698. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 88 km (55 mi) SSW earthquakes near Orange County
Los Angeles County, CA 93 km (58 mi) W earthquakes near Los Angeles County
San Bernardino County, CA 115 km (71 mi) ENE earthquakes near San Bernardino County
Riverside County, CA 135 km (84 mi) ESE earthquakes near Riverside County

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

Aftershocks so far

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

  1. 2.1 6 km W of Devore, CA
  2. 1.8 5 km NW of Mira Loma, CA
  3. 2.0 4 km N of Fontana, CA
  4. 1.7 16 km NNE of Apple Valley, CA
  5. 1.6 16 km NNE of Apple Valley, CA
  6. 1.8 3 km SE of Yucaipa, CA
  7. 1.6 12 km N of La Verne, CA
  8. 3.0 3 km SE of Yucaipa, CA
  9. 1.6 2 km SW of Loma Linda, CA
  10. 2.0 5 km NW of Highland, CA
  11. 2.3 3 km SSE of Devore, CA
  12. 2.1 13 km N of La Verne, CA
  13. 1.6 15 km NNE of Apple Valley, CA
  14. 2.1 3 km SE of Loma Linda, CA
  15. 1.8 2 km SE of Rancho Cucamonga, 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.