Earthquake · automatic estimate, may change
M 1.6ml
4km NNE of Progreso, B.C., MX
Yes. A magnitude 1.6 earthquake was recorded 4km NNE of Progreso, B.C., MX, at 12:22 am PDT on 17 August 2019 (07:22 UTC), 6.3 km deep. The magnitude and location are an automatic first estimate and may change.
- When
- Magnitude
- M 1.6 (ml)
- Depth
- 6.3 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 52 km NNE
- Nearest mapped fault
- Imperial fault, 22 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2644 days ago
Earthquake alerts for Calexico, CA
Get a notification in this browser when USGS records an earthquake near Calexico, 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 8 km (5 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: Calexico, Heber, El Centro, Seeley, Imperial, Holtville.
How big was it?
This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.6 about 6.4 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 4.4 on 2018-09-29 — about 19,000 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 32.6125, -115.5750. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 52 km (32 mi) | NNE | earthquakes near Imperial County |
| San Diego County, CA | 121 km (75 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
58 earthquakes have been recorded within 50 km since this one.
- 2.0 7km WSW of Holtville, CA
- 1.5 7km WSW of Holtville, CA
- 2.9 10km WNW of Alberto Oviedo Mota, B.C., MX
- 2.0 13km SE of Puebla, B.C., MX
- 1.6 15km E of Ocotillo, CA
- 1.6 16km E of Ocotillo, CA
- 2.7 8km SSW of Holtville, CA
- 1.7 7km NE of Calexico, CA
- 1.6 9km NE of Mexicali, B.C., MX
- 1.6 8km SSW of Holtville, CA
- 1.8 9km SSW of Holtville, CA
- 1.9 9km NE of Calexico, CA
- 1.9 8km SSW of Holtville, CA
- 2.3 8km ENE of Imperial, CA
- 1.6 2km SW of Imperial, 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.