USGS · October 21, 2026
Magnitude 3.1 earthquake near Patterson, California
A magnitude 3.1 earthquake was recorded near 23 km WSW of Gustine, CA on Oct 21, 2026, 09:18 PM (local time at the epicentre — PDT, UTC-7), at a depth of about -0.7 km, according to USGS.
USGSFelt by 2 people · community intensity I (not felt)Shallow (0–70 km)Automatic solution — subject to revision
Updated 2026-10-22 05:25 UTC
The full record
- Magnitude
- M 3.1 · local (Richter) magnitude
- Location
- 23 km WSW of Gustine, CA
- Local time at the epicentre
- Oct 21, 2026, 09:18 PM — PDT, UTC-7
- Time (UTC)
- 2026-10-22 04:18 UTC
- Depth
- -0.7 km · Shallow (0–70 km)
- Coordinates
- 37.170, -121.230
- Felt reports
- Felt by 2 people · community intensity I (not felt)
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 153 / 1000 · routine event
- Solution quality
- 102 seismic stations used · 112° azimuthal gap (well-constrained epicentre)
- Review status
- Automatic solution — subject to revision
- Catalog
- USGS
Epicentre and nearby recent earthquakes
The highlighted circle is this earthquake. Smaller circles are other events recorded nearby in the last 30 days.
What the shaking was like
Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
People who reported it described intensity I (Not felt): Not felt except by a very few under especially favourable conditions.
Felt it yourself? USGS collects first-hand reports through “Did You Feel It?”, and those reports are what produce the community intensity above.
Who lives nearby
About 16,655 people live in towns within 30 km of the epicentre, and 5,122,699 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| Gustine | 22.7 km ENE | 5,756 |
| Newman | 24.4 km NE | 10,899 |
| Patterson | 34.7 km NNE | 21,498 |
| San Martin | 35.0 km WSW | 7,027 |
| Gilroy | 35.2 km WSW | 53,231 |
| Los Banos | 35.9 km ESE | 37,457 |
| Morgan Hill | 37.9 km W | 42,948 |
| Hollister | 38.5 km SSW | 37,462 |
| Ridgemark | 41.5 km SSW | 3,016 |
| Hilmar-Irwin | 42.5 km NE | 5,197 |
Earthquake history in this area
12 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in California.
Other earthquakes near this epicentre
4 other events within 100 km in the last 30 days.
Be first to know about the next earthquake near 23 km WSW of Gustine, CA
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Frequently asked questions
How strong was the 23 km WSW of Gustine, CA earthquake?
Magnitude 3.1 (local (Richter) magnitude), at a depth of -0.7 km. Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
Exactly when did it happen?
Oct 21, 2026, 09:18 PM (local time at the epicentre — PDT, UTC-7). In universal time: 2026-10-22 04:18 UTC.
Was it felt?
Felt by 2 people · community intensity I (not felt). Not felt except by a very few under especially favourable conditions.
Was there a tsunami warning?
No tsunami evaluation was flagged for this earthquake.
Which towns are closest to the epicentre?
The closest is Gustine, 22.7 km ENE (population 5,756).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 6.9 (The 1989 Loma Prieta, California Earthquake, 1989), and 4 further events were recorded within 100 km in the last 30 days.
How do I get alerts for the next earthquake here?
Install the free SeismoWatch Android app, draw a box over this area, set a minimum magnitude, and turn alerts on.
About this page
Event data: U.S. Geological Survey (USGS), the European-Mediterranean Seismological Centre (EMSC), in Venezuela FUNVISIS and in Brazil the RSBR through the Centro de Sismologia da USP. Populated places and time zones: GeoNames (CC BY 4.0). Preliminary solutions are revised as more observations arrive.