Earthquake · reviewed by a seismologist
M 1.9ml
18 km NW of Progreso, B.C., MX
Yes. A magnitude 1.9 earthquake was recorded 18 km NW of Progreso, B.C., MX, at 8:29 am PDT on 8 October 2023 (15:29 UTC), 12 km deep.
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 51 km NE
- Nearest mapped fault
- Yuha Basin faults, 9 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 1130 days ago
Earthquake alerts for Seeley, CA
Get a notification in this browser when USGS records an earthquake near Seeley, 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 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 9 km (6 mi) from the epicentre. 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: Seeley, El Centro, Heber, Calexico, Imperial.
How big was it?
This earthquake released about 20 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 5.8 760,000× the energy of this one
- Magna, Utah 2020 M 5.7 540,000× the energy of this one
- Around the size people start to feel M 3.0 48× the energy of this one
- This earthquake M 1.9 about 20 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 in our catalogue was M 4.9 on 2020-10-01 — about 38,000 times the energy of this one.
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 32.6958, -115.7197. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 51 km (32 mi) | NE | earthquakes near Imperial County |
| San Diego County, CA | 105 km (65 mi) | WNW | earthquakes near San Diego County |
| Riverside County, CA | 118 km (73 mi) | NNW | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
39 earthquakes have been recorded within 50 km since this one.
- 1.8 9 km W of Progreso, B.C., MX
- 1.6 26 km WSW of Westmorland, CA
- 1.5 12 km WSW of Progreso, B.C., MX
- 1.5 7 km W of Progreso, B.C., MX
- 1.5 12 km SSE of Progreso, B.C., MX
- 1.6 9 km NE of Calexico, CA
- 1.5 5 km NE of Westmorland, CA
- 2.1 13 km SE of Ocotillo, CA
- 2.6 17 km W of Imperial, CA
- 3.9 16 km W of Imperial, CA
- 1.5 8 km SSW of Holtville, CA
- 1.5 2 km W of Heber, CA
- 1.8 18 km ENE of Ocotillo, CA
- 2.3 5 km NE of Westmorland, CA
- 1.5 14 km WNW of Progreso, B.C., MX
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.