Earthquake · reviewed by a seismologist
M 2.9ml
Earthquake near Lakeside, CA
No earthquake was likely felt in Lakeside in the 24 hours to 5:57 am PST (13:57 UTC). The last one was M 4.9, 170 km (106 mi) ESE, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Lakeside
This page: a magnitude 2.9 earthquake was recorded 6 km (4 mi) north-northwest of Lakeside, CA, at 7:18 am PDT on 19 March 2020 (14:18 UTC), 5.2 km deep. 511 people have reported feeling it to USGS.
USGS: 6km NNW of Lakeside, CA
20 km (12 mi) ENE of San Diego, CA · 7 km (4 mi) NNE of Santee, CA
- When
- 7:18 am PDT on 19 March 2020 ()
- Where
- 6 km (4 mi) north-northwest of Lakeside, CA · earthquakes near Lakeside
- Magnitude
- M 2.9 (ml)
- Depth
- 5.2 km below the surface
- Felt
- 511 reports · strongest reported intensity V
- Nearest
- San Diego County, 21 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2350 days ago
Earthquake alerts for Lakeside, CA
Get a notification in this browser when USGS records an earthquake near Lakeside, CA. No account or email needed.
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 31 km (19 mi) from the epicentre. In Lakeside, 6 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: Ramona 17 km, intensity II · Alpine 19 km, intensity II · San Diego Country Estates 19 km, intensity II · Escondido 27 km, intensity II · San Diego 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 630 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 24,000× the energy of this one
- Magna, Utah 2020 M 5.7 17,000× the energy of this one
- Around the size people start to feel M 3.0 1.5× the energy of this one
- This earthquake M 2.9 about 630 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.0 16 km NW of Julian, California · 40 km NE 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 32.9082, -116.9533. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 21 km (13 mi) | NE | earthquakes near San Diego County |
| Orange County, CA | 115 km (71 mi) | NW | earthquakes near Orange County |
| Riverside County, CA | 127 km (79 mi) | NE | earthquakes near Riverside 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.
- 1.7 2km WNW of Julian, CA
- 3.6 6km SSW of Warner Springs, CA
- 3.3 14km SW of Coronado, CA
- 1.7 12km NE of Julian, CA
- 1.7 2km SSW of San Ysidro, CA
- 2.8 11km ESE of Julian, CA
- 1.9 7km W of Palomar Observatory, CA
- 1.8 5km SSE of Lake Henshaw, CA
- 1.7 9km N of San Pasqual, CA
- 1.9 8km W of Encinitas, CA
- 1.8 7km SE of Bonita, CA
- 1.6 6km WNW of Lake Henshaw, CA
- 1.7 7km ESE of Chula Vista, CA
- 1.6 4km E of Julian, CA
- 2.0 11km NE 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.