USGS · September 30, 2026
Magnitude 2.6 earthquake near Windsor, California
A magnitude 2.6 earthquake was recorded near 1 km SW of Anderson Springs, CA on Sep 30, 2026, 01:48 PM (local time at the epicentre — PDT, UTC-7), at a depth of about 1.8 km, according to USGS.
USGSFelt by 5 people · community intensity IV (light)Shallow (0–70 km)Automatic solution — subject to revision
Updated 2026-09-30 23:36 UTC
The full record
- Magnitude
- M 2.6 · duration magnitude
- Location
- 1 km SW of Anderson Springs, CA
- Local time at the epicentre
- Sep 30, 2026, 01:48 PM — PDT, UTC-7
- Time (UTC)
- 2026-09-30 20:48 UTC
- Depth
- 1.8 km · Shallow (0–70 km)
- Coordinates
- 38.766, -122.701
- Felt reports
- Felt by 5 people · community intensity IV (light)
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 108 / 1000 · routine event
- Solution quality
- 68 seismic stations used · 27° 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 IV (Light): Felt indoors by many; dishes and windows rattle and parked cars rock.
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 97,205 people live in towns within 30 km of the epicentre, and 1,730,838 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| Cobb | 6.5 km NNW | 1,778 |
| Middletown | 7.6 km ESE | 1,323 |
| Hidden Valley Lake | 13.2 km ENE | 5,579 |
| Lower Lake | 17.8 km NNE | 1,294 |
| Clear Lake Riviera | 20.9 km N | 3,090 |
| Clearlake | 22.3 km NNE | 15,182 |
| Healdsburg | 22.7 km SW | 11,742 |
| Calistoga | 23.4 km SSE | 5,330 |
| Windsor | 26.4 km SSW | 27,464 |
| Kelseyville | 26.4 km NNW | 3,353 |
Earthquake history in this area
8 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in California.
Other earthquakes near this epicentre
11 other events within 100 km in the last 30 days.
M 2.6 6 km W of Yountville, CAFelt · 50
M 2.6 9 km NW of Redwood Valley, CAFelt · 7
M 2.7 10 km W of Boonville, CAFelt · 17
M 3.7 10 km W of Boonville, CAFelt · 136
M 2.6 3 km ESE of Santa Rosa, CAFelt · 171
M 2.8 4 km W of Cobb, CAFelt · 3
M 3.0 10 km WNW of Cobb, CAFelt · 3
M 2.8 10 km WNW of Cobb, CAFelt · 1
M 2.6 12 km WNW of Cobb, CA
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Frequently asked questions
How strong was the 1 km SW of Anderson Springs, CA earthquake?
Magnitude 2.6 (duration magnitude), at a depth of 1.8 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?
Sep 30, 2026, 01:48 PM (local time at the epicentre — PDT, UTC-7). In universal time: 2026-09-30 20:48 UTC.
Was it felt?
Felt by 5 people · community intensity IV (light). Felt indoors by many; dishes and windows rattle and parked cars rock.
Was there a tsunami warning?
No tsunami evaluation was flagged for this earthquake.
Which towns are closest to the epicentre?
The closest is Cobb, 6.5 km NNW (population 1,778).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 6.2 (The 1984 Morgan Hill, California Earthquake, 1984), and 11 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.