Earthquake · reviewed by a seismologist
M 3.5mw
Earthquake near Idyllwild, CA
No earthquake was likely felt in Idyllwild in the 24 hours to 5:09 am PST (13:09 UTC). The last one was M 2.7, 19 km (12 mi) WNW, at 1:04 am PDT on 11 October 2026, estimated intensity II (weak) in town; 58 felt reports to USGS. Every earthquake near Idyllwild
This page: a magnitude 3.5 earthquake was recorded 10 km (6 mi) southwest of Idyllwild, CA, at 5:36 pm PST on 27 November 2025 (01:36 UTC), 18 km deep. 204 people have reported feeling it to USGS.
USGS: 10 km SW of Idyllwild, CA
20 km (12 mi) ESE of Hemet, CA · 101 km (63 mi) NNE of San Diego, CA
- When
- 5:36 pm PST on 27 November 2025 ()
- Where
- 10 km (6 mi) southwest of Idyllwild, CA · earthquakes near Idyllwild
- Magnitude
- M 3.5 (mw)
- Depth
- 18 km below the surface
- Felt
- 204 reports · strongest reported intensity IV
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- San Diego County, 72 km S
- Nearest mapped fault
- San Jacinto fault, under 1 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 134 days ago
Earthquake alerts for Idyllwild, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 61 km (38 mi) from the epicentre. In Idyllwild, 10 km away, the estimate is intensity III (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: Idyllwild 10 km, intensity III · Valle Vista 12 km, intensity III · Anza 18 km, intensity III · Hemet 18 km, intensity III · San Jacinto 19 km, intensity III · Aguanga 27 km, intensity II · Banning 29 km, intensity II · Palm Springs 29 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 2.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 64,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 2,900× the energy of this one
- Magna, Utah 2020 M 5.7 2,000× the energy of this one
- This earthquake M 3.5 about 2.6 tons of TNT
- Around the size people start to feel M 3.0 this one released 5.5× more
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 5.2 on 2016-06-10 — about 350 times the energy of this one.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 19 km WNW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 40 km NNE of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 41 km SE of this epicentre
- 5.3 4km NNE of Desert Hot Springs, CA · 46 km NE of this epicentre
- 5.3 6km SSE of Hemet, CA · 13 km WNW 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 33.6750, -116.7965. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 72 km (45 mi) | S | earthquakes near San Diego County |
| Riverside County, CA | 74 km (46 mi) | E | earthquakes near Riverside County |
| Orange County, CA | 91 km (56 mi) | W | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
42 earthquakes have been recorded within 50 km since this one.
- 2.5 6 km SE of Valle Vista, CA
- 1.6 2 km ESE of Lake Henshaw, CA
- 2.3 8 km WNW of Garnet, CA
- 1.9 10 km NNE of Banning, CA
- 1.5 7 km N of Beaumont, CA
- 2.1 5 km NE of Cabazon, CA
- 2.0 2 km ESE of Lake Henshaw, CA
- 1.8 14 km N of Warner Springs, CA
- 1.6 12 km NNE of Aguanga, CA
- 2.0 10 km SW of Idyllwild, CA
- 1.7 6 km WSW of Idyllwild, CA
- 2.9 10 km NNE of Cabazon, CA
- 1.6 7 km NW of Banning, CA
- 1.7 8 km SE of Winchester, CA
- 1.9 11 km NW of Anza, 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
- 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.