Latest Earthquakes near Simi Valley
Live map and archive of seismic activity in and around Simi Valley, California.
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1 day agoSimi Valley Activity Report
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Live map and archive of seismic activity in and around Simi Valley, California.
Common Questions about Earthquakes near Simi Valley
How often are earthquakes recorded in the Simi Valley area?
In the past 7 days, the number of earthquakes of magnitude 1.5 or above recorded in the area within 100 km of Simi Valley was 2. These figures describe the available records, not a prediction of future earthquakes.
When was the last earthquake near Simi Valley?
The most recent recorded earthquake in the area within 100 km of Simi Valley had a magnitude of 2.0 and occurred on October 23, 2026 at 02:39 AM PDT.
How strong was the largest recent earthquake in the Simi Valley area?
Among the available records for the area within 100 km of Simi Valley, the largest earthquake in the past 365 days had a magnitude of 4.1. These figures describe the available records, not a prediction of future earthquakes.
How far back does the earthquake data go?
The historical search starts in 1900, but available records vary by region and source. Older and smaller earthquakes may be missing. A long search can reach the list’s display limit, so narrow the date range to explore it in more detail.
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Oct 24, 2026, 22:42 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0.
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).