Earthquake · reviewed by a seismologist
M 1.9ml
6km SW of Idyllwild, CA
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 15 km below the surface
- Felt
- no reports yet
- Nearest
- Riverside County, 70 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1329 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
- Magna, Utah 2020 M 5.7 450,000× the energy of this one
- Around the size people start to feel M 3.0 40× the energy of this one
- This earthquake M 1.9 about 24 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.
Where
Epicentre 33.7032, -116.7612. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Riverside County, CA | 70 km (44 mi) | W of here | earthquakes near Riverside County |
| San Diego County, CA | 76 km (47 mi) | N of here | earthquakes near San Diego County |
| Orange County, CA | 94 km (58 mi) | E of here | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
48 earthquakes have been recorded within 50 km since this one.
- 2.6 14km SE of Anza, CA
- 2.3 6km WSW of Anza, CA
- 1.6 6km WSW of Anza, CA
- 2.1 6km WSW of Anza, CA
- 1.7 21km ESE of Anza, CA
- 2.0 5km NNE of Banning, CA
- 1.7 14km W of Morongo Valley, CA
- 1.5 6km NE of Beaumont, CA
- 1.8 10km NW of San Jacinto, CA
- 1.7 3km SW of Calimesa, CA
- 1.8 3km SE of San Jacinto, CA
- 1.6 15km W of Morongo Valley, CA
- 1.9 8km WSW of Idyllwild, CA
- 1.5 3km NNW of Cabazon, CA
- 1.9 5km SW of Palomar Observatory, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.2 on 2016-06-10 — it released about 78,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.