Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Hemet, CA
No earthquake was likely felt in Hemet in the 24 hours to 7:20 am PST (15:20 UTC). The last one was M 2.2, 7 km (4 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 Hemet
This page: a magnitude 1.7 earthquake was recorded 12 km (7 mi) south of Hemet, CA, at 10:31 am PDT on 23 June 2018 (17:31 UTC), 15 km deep.
USGS: 12km S of Hemet, CA
11 km (7 mi) SSE of Hemet, CA · 140 km (87 mi) ESE of Los Angeles, CA
- When
- 10:31 am PDT on 23 June 2018 ()
- Where
- 12 km (7 mi) south of Hemet, CA · earthquakes near Hemet
- Magnitude
- M 1.7 (ml)
- Depth
- 15 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 71 km SSE
- Nearest mapped fault
- San Jacinto fault, 11 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 3031 days ago
Earthquake alerts for Hemet, CA
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This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Hemet, 12 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: East Hemet, Winchester, Valle Vista, Green Acres, San Jacinto, Homeland.
How big was it?
This earthquake released about 11 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 1,300,000× the energy of this one
- Magna, Utah 2020 M 5.7 930,000× the energy of this one
- Around the size people start to feel M 3.0 83× the energy of this one
- This earthquake M 1.7 about 11 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 14,000 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 · 13 km N of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 41 km W of this epicentre
- 5.3 6km SSE of Hemet, CA · 8 km NNE of this epicentre
- 5.3 18km ESE of Anza, CA · 47 km ESE of this epicentre
- 5.2 12km WSW of Morongo Valley, CA · 47 km NNE 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 33.6407, -116.9673. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 71 km (44 mi) | SSE | earthquakes near San Diego County |
| Orange County, CA | 75 km (47 mi) | W | earthquakes near Orange County |
| Riverside County, CA | 90 km (56 mi) | E | earthquakes near Riverside County |
| Los Angeles County, CA | 134 km (84 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
53 earthquakes have been recorded within 50 km since this one.
- 1.6 12km NNE of Cabazon, CA
- 1.8 6km N of Cabazon, CA
- 1.5 6km N of Cabazon, CA
- 1.5 3km SE of Yucaipa, CA
- 2.0 4km E of Palomar Observatory, CA
- 2.7 20km ESE of Anza, CA
- 1.5 5km NE of Anza, CA
- 2.2 8km NE of Aguanga, CA
- 2.1 8km NE of Aguanga, CA
- 1.6 5km NE of Anza, CA
- 1.6 6km WNW of Lake Henshaw, CA
- 1.5 7km WNW of Lake Henshaw, CA
- 2.4 5km NE of Anza, CA
- 2.4 8km SW of Idyllwild, CA
- 2.8 9km WSW 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.