M2.3 earthquake 38 km ENE of Big Pine, California

A magnitude 2.3 earthquake struck 38 km ENE of Big Pine, California on Sun, Sep 24, 2017, 10:49 PM PDT (05:49 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.3 12 km WSW of Aspen Springs, California. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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
2.32	Md, duration	Northern California Seismic System	Preferred · Final · ±0.273 · 39 stations
2.3	ML, local (Richter)	Nevada Seismological Laboratory	Reviewed · ±0.27 · 14 stations

3 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 104 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event nc72898431 (also filed as nn00606893). Read Mon, Oct 5, 2026, 3:46 AM UTC.