Earthquake · automatic estimate, may change
M 1.8ml
4km S of Idyllwild, CA
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 17 km below the surface
- Felt
- no reports yet
- Nearest
- Riverside County, 67 km E
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2617 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 17 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.
- Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
- Magna, Utah 2020 M 5.7 620,000× the energy of this one
- Around the size people start to feel M 3.0 55× the energy of this one
- This earthquake M 1.8 about 17 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 33.7002, -116.7282. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Riverside County, CA | 67 km (42 mi) | W of here | earthquakes near Riverside County |
| San Diego County, CA | 75 km (47 mi) | N of here | earthquakes near San Diego County |
| Orange County, CA | 97 km (60 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
41 earthquakes have been recorded within 50 km since this one.
- 1.9 8km SSE of Yucca Valley, CA
- 1.6 9km N of Banning, CA
- 2.0 12km N of Cabazon, CA
- 1.6 10km NNE of Cabazon, CA
- 3.4 10km NNE of Cabazon, CA
- 1.7 11km NNE of Cabazon, CA
- 2.2 3km WNW of Cabazon, CA
- 1.5 8km SSE of Yucca Valley, CA
- 1.7 4km S of Idyllwild, CA
- 1.5 12km SSW of Idyllwild, CA
- 1.7 13km N of Cabazon, CA
- 2.5 5km SSW of Idyllwild, CA
- 1.7 13km NNE of Cabazon, CA
- 1.7 2km WNW of Cabazon, CA
- 1.6 9km SE of Valle Vista, 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 110,000 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.