M3.6 earthquake on San Gorgonio Pass fault zone shakes Banning

An M3.6 earthquake struck 4 km south of Banning, California on February 17, 2026 at 10:57 AM PST (18:57:13 UTC). USGS placed the epicenter in Riverside County at a depth of 14.0 kilometers, about 5.3 km from the mapped trace of the San Gorgonio Pass fault zone.

The event drew 399 "Did You Feel It?" reports submitted to USGS, with a community-reported intensity (CDI) of 3.4. ShakeMap modeled a maximum instrumental intensity (MMI) of 3.6. Both values are consistent with weak-to-light shaking felt indoors across the I-10 corridor.

At a depth of 14.0 km, the event sits in the mid-crustal range. USGS assigned a significance score of 335 on its internal 0–1000 scale.

Riverside County has a population of approximately 2,280,000. USGS PAGER did not produce a population-exposure estimate for this event.

USGS catalog data shows 2 other M3.6+ earthquakes within 20 km of this epicenter in the past 10 years, suggesting events of this size occur about once every 5 years at this location.

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Event data

• Magnitude: M3.6 (Ml)
• Depth: 13.98 km
• Time: 2026-02-17 10:57 AM PST (18:57:13 UTC)
• Coordinates: 33.8930°N, -116.8688°W
• County: Riverside
• Nearest mapped fault: San Gorgonio Pass fault zone, 5.3 km
• USGS event page: https://earthquake.usgs.gov/earthquakes/eventpage/ci41187255