Earthquake · 17 Oct 2026
M2.6 earthquake — 18 km WSW of Petrolia, CA
- Event
- Earthquake
- Magnitude
- M2.6 (Minor)
- Severity
- Low
- Time
- (16 days ago)
- Location
- 18 km WSW of Petrolia, CA
- Country
- United States
- Coordinates
- 40.273°, -124.488°
- Source
- USGS Earthquake Hazards Program
What this means
This was a minor earthquake of magnitude 2.6. Often felt by people near the epicenter but rarely causes damage.
Magnitude measures the energy released at the source. How strongly the ground shook at any particular place depends on distance from the epicenter, the depth of the quake, local geology and building construction, so the same magnitude can be harmless in one place and damaging in another. First magnitudes are preliminary and are often revised by a few tenths as more stations report.
Other events within 300 km (±14 days)
- M2.9 earthquake — 29 km W of Petrolia, CA — 12 km away, 30 Oct 2026, 13:56 UTC
- M3.9 earthquake — 10 km N of Lake Pillsbury, CA — 157 km away, 28 Oct 2026, 12:01 UTC
- M2.8 earthquake — 236 km W of Ferndale, California — 219 km away, 27 Oct 2026, 23:34 UTC
- M3.9 earthquake — 209 km WSW of Pistol River, Oregon — 269 km away, 24 Oct 2026, 22:26 UTC
- M2.5 earthquake — 7 km W of Cobb, CA — 216 km away, 24 Oct 2026, 20:39 UTC
- M2.8 earthquake — 193 km WSW of Pistol River, Oregon — 250 km away, 24 Oct 2026, 17:49 UTC
- M3.4 earthquake — 70 km W of Ferndale, CA — 64 km away, 23 Oct 2026, 05:38 UTC
- M3.3 earthquake — 14 km SE of Petrolia, CA — 27 km away, 22 Oct 2026, 01:43 UTC
- M2.5 earthquake — 2 km NW of The Geysers, CA — 221 km away, 20 Oct 2026, 16:23 UTC
- M3.1 earthquake — 80 km WNW of Ferndale, CA — 87 km away, 20 Oct 2026, 07:39 UTC
Smaller earthquakes close in time and space to a larger one are often aftershocks or foreshocks, though GlobalRisk does not classify them.
More from United States
GlobalRisk has recorded 602 events in or near United States in the data we hold. See the full United States risk monitor.
Source and attribution
Source: USGS Earthquake Hazards Program. View the original report ↗
GlobalRisk republishes only basic facts (type, time, location, magnitude or alert level) and links to the original report. Details may be revised by the source after this page was generated on 3 Nov 2026, 06:56 UTC.
Related guides
- Earthquake Magnitude Explained: What M4, M6 and M7 Really Mean
- Earthquake Safety: What to Do Before, During and After
For situational awareness only, not an official warning. Follow local authorities. Open the live map