M3.6 earthquake 51km SW of Rosarito, B.C., MX
A magnitude 3.6 earthquake struck 51km SW of Rosarito, B.C., MX on Fri, Oct 22, 2021, 7:56 PM PDT (02:56 UTC), 6 km (4 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.6 (ML, local (Richter)), minor
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 2021-10-23 02:56:39 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 32.046° N, 117.452° W
- Region
- Mexico
- Felt reports
- 17
- Strongest shaking
- II, weak shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.6 | ML, local (Richter) | Southern California Seismic Network | Preferred · Final · ±0.233 · 181 stations |
| 3.4 | ML, local (Richter) | USGS National Earthquake Information Center | Reviewed · ±0.046 · 62 stations |
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- II, weak shaking
- Peak ground acceleration
- 0.2% of gravity
- Peak ground velocity
- -3.0 cm/s
- Map
- Automatic
Did you feel it?
17 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 0.9 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.23
- Depth from
- Operator assigned
- Station coverage gap
- 265°, poorly surrounded by stations
- Stations used
- 30
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.950km SW of Rosarito, B.C., MX · 1808 days ago · 6 km deep · 1 km away
- 2.733km WSW of La Jolla, CA · 1806 days ago · 18 km deep · 76 km away · felt by 5
- 2.652km ESE of San Clemente Is. (SE tip), CA · 1798 days ago · 6 km deep · 71 km away · felt by 4
- 1.924km ESE of Primo Tapia, B.C., MX · 1796 days ago · 14 km deep · 74 km away
- 3.045km SW of Primo Tapia, B.C., MX · 1786 days ago · 21 km deep · 25 km away
- 3.228km W of El Sauzal, B.C., MX · 1782 days ago · 14 km deep · 48 km away
- 2.122km E of Primo Tapia, B.C., MX · 1771 days ago · 18 km deep · 76 km away
- 1.621km NNE of Primo Tapia, B.C., MX · 1759 days ago · 16 km deep · 71 km away
- 1.721km NNE of Primo Tapia, B.C., MX · 1757 days ago · 15 km deep · 72 km away
Before
Earthquakes todayMexico earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci39840559 (also filed as us6000fwx2). Read Mon, Oct 5, 2026, 4:16 AM UTC.