Earthquake · automatic estimate, may change
M 2.5ml
Earthquake near Winchester, CA
Yes. A magnitude 2.5 earthquake was recorded 10 km (6 mi) SE of Winchester, CA, at 9:59 am PDT on 10 October 2026 (16:59 UTC), 14 km deep. 17 people have reported feeling it to USGS. The magnitude and location are an automatic first estimate and may change.
USGS: 10 km SE of Winchester, CA
11 km (7 mi) S of Hemet, CA · 135 km (84 mi) ESE of Los Angeles, CA
- When
- 9:59 am PDT on 10 October 2026 ()
- Where
- 10 km (6 mi) SE of Winchester, CA · earthquakes near Winchester
- Magnitude
- M 2.5 (ml)
- Depth
- 14 km below the surface
- Felt
- 17 reports · strongest reported intensity III
- Nearest
- Orange County, 70 km W
- Nearest mapped fault
- San Jacinto fault, 14 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 55 minutes 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 18 km (11 mi) from the epicentre. In Winchester, 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.
Earthquakes near other towns within 30 km: Green Acres, Hemet, East Hemet, Homeland, Menifee, Valle Vista.
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.
- Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
- Magna, Utah 2020 M 5.7 63,000× the energy of this one
- Around the size people start to feel M 3.0 5.6× the energy of this one
- 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 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 15 km NNE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 36 km WNW of this epicentre
- 5.3 6km SSE of Hemet, CA · 10 km NE of this epicentre
- 5.2 8km ENE of Trabuco Canyon, CA · 46 km W of this epicentre
- 5.2 10km ESE of Anza, CA · 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 33.6373, -117.0183. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 70 km (44 mi) | W | earthquakes near Orange County |
| San Diego County, CA | 72 km (45 mi) | SSE | earthquakes near San Diego County |
| Riverside County, CA | 95 km (59 mi) | E | earthquakes near Riverside County |
| Los Angeles County, CA | 131 km (81 mi) | WNW | earthquakes near Los Angeles County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have been recorded within 50 km since this one.
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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| felt reports | 15 | 17 | |
| felt reports | 13 | 15 | |
| reported intensity | 2.7 | 2.9 | |
| felt reports | 7 | 13 | |
| felt reports | 1 | 7 | |
| reported intensity | not reported | 2.7 | |
| felt reports | not reported | 1 | |
| longitude | -117.02 | -117.02 | |
| latitude | 33.64 | 33.64 | |
| depth | 14.21 | 13.98 | |
| magnitude | 2.66 | 2.5 |
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.