Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Temecula, CA
No earthquake was likely felt in Temecula in the 24 hours to 12:02 pm PST (20:02 UTC). The last one was M 2.4, 4 km (2 mi) NE, at 3:31 am PDT on 5 September 2026, estimated intensity II (weak) in town; 86 felt reports to USGS. Every earthquake near Temecula
This page: a magnitude 1.9 earthquake was recorded 26 km (16 mi) east-southeast of Temecula, CA, at 9:26 pm PDT on 19 April 2023 (04:26 UTC), 13 km deep. 3 people have reported feeling it to USGS.
USGS: 5km NW of Palomar Observatory, CA
67 km (42 mi) NNE of San Diego, CA · 24 km (15 mi) ESE of Temecula, CA
- When
- 9:26 pm PDT on 19 April 2023 ()
- Where
- 26 km (16 mi) east-southeast of Temecula, CA · earthquakes near Temecula
- Magnitude
- M 1.9 (ml)
- Depth
- 13 km below the surface
- Felt
- 3 reports · strongest reported intensity III
- Nearest
- San Diego County, 42 km SSE
- Nearest mapped fault
- Elsinore 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 1272 days ago
Earthquake alerts for Temecula, 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 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 7 km (4 mi) from the epicentre. In Temecula, 26 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.
Likely felt in: Aguanga 7 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
- Magna, Utah 2020 M 5.7 470,000× the energy of this one
- Around the size people start to feel M 3.0 42× the energy of this one
- This earthquake M 1.9 about 23 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 5.2 on 2016-06-10 — about 80,000 times the energy of this one.
Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 42 km N of this epicentre
- 5.4 20km NNW of Borrego Springs, CA · 40 km E of this epicentre
- 5.3 6km SSE of Hemet, CA · 36 km N of this epicentre
- 5.3 18km ESE of Anza, CA · 39 km ENE of this epicentre
- 5.2 10km ESE of Anza, CA · 35 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 33.3855, -116.9057. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 42 km (26 mi) | SSE | earthquakes near San Diego County |
| Orange County, CA | 87 km (54 mi) | WNW | earthquakes near Orange County |
| Riverside County, CA | 92 km (57 mi) | ENE | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 1.5 3km ESE of Valle Vista, CA
- 1.5 11km NNW of Anza, CA
- 1.9 10km NNW of Anza, CA
- 1.9 14km WNW of Anza, CA
- 1.6 5km N of San Jacinto, CA
- 1.7 10km NE of Julian, CA
- 1.6 6km WNW of Borrego Springs, CA
- 1.6 2km NE of San Jacinto, CA
- 1.9 10km NE of Julian, CA
- 1.6 23km ESE of Anza, CA
- 3.2 10km NE of Julian, CA
- 1.8 11km N of Borrego Springs, CA
- 1.5 9km W of Palomar Observatory, CA
- 1.7 2km E of San Jacinto, CA
- 1.6 11km NNW of Julian, 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.