Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Oasis, CA
No earthquake was likely felt in Oasis in the 24 hours to 3:11 am PST (11:11 UTC). The last one was M 4.9, 144 km (89 mi) SE, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Oasis
This page: a magnitude 1.8 earthquake was recorded 18 km (11 mi) south-southwest of Oasis, CA, at 7:51 pm PST on 5 January 2019 (03:51 UTC), 12 km deep. 1 person has reported feeling it to USGS.
USGS: 18km SSW of Oasis, CA
45 km (28 mi) S of Indio, CA · 105 km (65 mi) ENE of San Diego, CA
- When
- 7:51 pm PST on 5 January 2019 ()
- Where
- 18 km (11 mi) south-southwest of Oasis, CA · earthquakes near Oasis
- Magnitude
- M 1.8 (ml)
- Depth
- 12 km below the surface
- Felt
- 1 report · strongest reported intensity III
- Nearest
- Riverside County, 48 km NNE
- Nearest mapped fault
- San Jacinto fault, 2 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 2865 days ago
Earthquake alerts for Oasis, 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 Oasis, 18 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: Desert Shores, Borrego Springs, Salton City, Mecca.
How big was it?
This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 730,000× the energy of this one
- Around the size people start to feel M 3.0 65× the energy of this one
- This earthquake M 1.8 about 15 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 130,000 times the energy of this one.
Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:
- 6.6 The 1968 Borrego Mountain, California Earthquake · 18 km SSE of this epicentre
- 6.6 The 1987 Superstition Hills, California Earthquake · 47 km SE of this epicentre
- 6.4 The 1954 San Jacinto Fault, California Earthquake · 10 km ESE of this epicentre
- 6.2 The 1987 Elmore Ranch, California Earthquake · 45 km SE of this epicentre
- 6.0 16km WSW of Oasis, CA · 10 km NW 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 33.3257, -116.1865. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Riverside County, CA | 48 km (30 mi) | NNE | earthquakes near Riverside County |
| San Diego County, CA | 64 km (40 mi) | WSW | earthquakes near San Diego County |
| Imperial County, CA | 84 km (52 mi) | ESE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
51 earthquakes have been recorded within 50 km since this one.
- 1.9 9km SW of Salton City, CA
- 1.8 9km E of Borrego Springs, CA
- 1.6 8km NNW of Borrego Springs, CA
- 1.5 18km ESE of Julian, CA
- 1.6 17km ESE of Julian, CA
- 1.5 16km ESE of Julian, CA
- 1.8 16km ESE of Julian, CA
- 1.9 13km ESE of Anza, CA
- 1.8 9km NNE of Borrego Springs, CA
- 1.5 18km NNW of Westmorland, CA
- 2.3 18km N of Borrego Springs, CA
- 1.6 17km ESE of Anza, CA
- 1.9 19km ESE of Anza, CA
- 2.5 8km E of Borrego Springs, CA
- 1.9 16km ENE of Borrego Springs, 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.