Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near San Jacinto, CA
No earthquake was likely felt in San Jacinto in the 24 hours to 3:33 am PST (11:33 UTC). The last one was M 2.2, 3 km (2 mi) N, at 8:52 pm PDT on 14 October 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near San Jacinto
This page: a magnitude 1.7 earthquake was recorded 6 km (3 mi) northwest of San Jacinto, CA, at 5:07 am PDT on 25 July 2018 (12:07 UTC), 12 km deep.
USGS: 6km NW of San Jacinto, CA
in San Jacinto, CA · 132 km (82 mi) E of Los Angeles, CA
- When
- 5:07 am PDT on 25 July 2018 ()
- Where
- 6 km (3 mi) northwest of San Jacinto, CA · earthquakes near San Jacinto
- Magnitude
- M 1.7 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 74 km WSW
- Nearest mapped fault
- San Jacinto fault, 7 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 3030 days ago
Earthquake alerts for San Jacinto, CA
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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 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 2 km (1 mi) from the epicentre. In San Jacinto, 6 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: Hemet, East Hemet, Lakeview, Green Acres, Beaumont, Valle Vista.
How big was it?
This earthquake released about 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 100× the energy of this one
- This earthquake M 1.7 about 9.3 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 18,000 times the energy of this one.
Before 2016, the USGS record lists 21 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 7 km SSE of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 45 km NNE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 38 km NW of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 39 km WSW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 41 km ENE 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 33.8208, -116.9988. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 74 km (46 mi) | WSW | earthquakes near Orange County |
| San Diego County, CA | 91 km (57 mi) | SSE | earthquakes near San Diego County |
| Riverside County, CA | 93 km (58 mi) | E | earthquakes near Riverside County |
| Los Angeles County, CA | 124 km (77 mi) | WNW | earthquakes near Los Angeles County |
| San Bernardino County, CA | 137 km (85 mi) | NNE | earthquakes near San Bernardino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 2.0 8km NE of Aguanga, CA
- 1.7 8km NE of Aguanga, CA
- 1.7 9km NE of Aguanga, CA
- 2.2 8km NE of Aguanga, CA
- 4.4 7km NE of Aguanga, CA
- 1.9 8km NE of Aguanga, CA
- 2.0 8km NE of Aguanga, CA
- 2.0 8km NE of Aguanga, CA
- 1.8 8km ENE of Aguanga, CA
- 1.5 2km SE of Home Gardens, CA
- 1.9 5km WNW of Banning, CA
- 1.9 8km NE of Aguanga, CA
- 1.5 8km NE of Aguanga, CA
- 1.6 8km ENE of Aguanga, CA
- 2.3 8km NE of Aguanga, 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.