Which active faults threaten San Diego?

The fault systems associated with San Diego are named in the hub header and drawn on the map alongside recorded seismicity. Proximity alone does not rank hazard: rupture length, slip rate and the time elapsed since the last event all matter, so the page shows the traces and the observed activity rather than a single ranking.

Who is the emergency service for San Diego?

The civil protection agency responsible for San Diego, with its emergency number, is shown on this page. Call it for any life-threatening situation; for official damage reports and aftershock bulletins, follow the national seismological agency listed among our data sources.

Photo:Kalash Studiovia Unsplash

Back to Regions List UNITED STATES

San Diego

The Rose Canyon Fault runs through the bay and downtown before continuing offshore; it is a slower relative of the San Andreas system, which makes its recurrence long and its record short rather than its hazard low.

Danger Level (72h)

72-hour composite hazard forecast

Recent Quakes (14d)

Recorded in the selected 14d period

Max Magnitude (14d)

Largest earthquake in the selected 14d period

Tectonic Profile

Seismotectonic hazard assessment, structural exposure & historical context

Associated Faults3

Click to locate on map

Regional PopulationLandScan

Living within 180 km of the city centre

Building VulnerabilityModerate

Mixed construction stock with regional engineering standards

Tectonic Setting

Transform / Strike-Slip

High Hazard

Active fault boundary with frequent seismicity

Seismically Stable Period

No significant earthquakes recorded in the selected 14d period.

PAGER GREEN

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LIVE

Oct 22, 08:35:04 PM

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Seismic Activity

Every recorded earthquake in this area — filter by time range and sort by time or severity.

No earthquake activity data available for this period.

Regional Volcanism & Monitored Vents

Active vents and Holocene volcanic structures within the monitored boundary (San Diego) · 1

Last eruptionVolcano & TypeDetailsSummit

210

Salton Buttes

Lava dome•United States

GVP

0.0 km

Catalogue: Smithsonian Institution, Global Volcanism Program.Volcanoes of the World

Emergency services

Cal OES

911 Official site

Frequently Asked Questions (FAQ)

Verified scientific, operational, and emergency protocols

The event table on this page lists every earthquake recorded inside the felt radius of San Diego, newest first, with its distance from the city centre and its magnitude. The top row is therefore the most recent event, and the list updates as soon as a reporting agency publishes a solution.