Earthquake · reviewed by a seismologist
M 1.7ml
12km NW of Progreso, B.C., MX
Yes. A magnitude 1.7 earthquake was recorded 12km NW of Progreso, B.C., MX, at 2:07 pm PDT on 20 June 2021 (21:07 UTC), 8.3 km deep.
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 8.3 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 53 km NE
- Nearest mapped fault
- Yuha Basin faults, 12 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 1970 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, Heber, Calexico, El Centro, Imperial.
How big was it?
This earthquake released about 10 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 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 92× the energy of this one
- This earthquake M 1.7 about 10 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 72,000 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 32.6457, -115.6798. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 53 km (33 mi) | NE | earthquakes near Imperial County |
| San Diego County, CA | 111 km (69 mi) | WNW | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 2.0 7km WSW of Holtville, CA
- 2.3 7km W of Holtville, CA
- 1.9 2km SSW of Brawley, CA
- 1.6 7km W of Holtville, CA
- 2.1 8km W of Holtville, CA
- 2.9 8km W of Holtville, CA
- 1.9 7km W of Holtville, CA
- 3.0 7km W of Holtville, CA
- 2.4 8km W of Holtville, CA
- 2.9 8km W of Holtville, CA
- 1.7 7km W of Holtville, CA
- 2.2 1km SSW of Brawley, CA
- 1.6 17km E of Ocotillo, CA
- 1.7 7km SW of Holtville, CA
- 1.5 15km ENE of Ocotillo, 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.