QuakeIndex

Earthquakes in San Francisco County, California

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Quiet QuakeIndex 0 / 100

0 quakes of M1.5 or larger in the last 7 days within 50 km. Normal for here is 0 to 1 in a week.

Compared against San Francisco County, California's own 10 years · USGS catalogue · updated

The last 30 days

Aug 29 Sep 13 Sep 27
Each mark is a day's largest quake within range; its size is the magnitude. The shaded band is the magnitude a day's largest quake normally falls in here (M1.6–M2.1), from this place's own 10-year record. A mark above the band is a bigger day than usual.

Live · last 7 days

Latest earthquakes within 50 km

None within 50 km in the latest snapshot we hold; the full 7 days load from USGS as this page opens.

Source USGS · snapshot of

Where this is

Centre 37.727, -123.032 — the Census internal point, from the US Census Bureau Gazetteer (2024). Activity is measured within 50 km of it.

Largest on record nearby

MagnitudeWhenWhere
M 3.5 5km WSW of Colma, CA
M 3.5 5 km NW of San Francisco Zoo, CA
M 3.3 7km S of Muir Beach, CA
M 3.2 5 km WSW of San Francisco Zoo, CA
M 3.0 3 km SSW of Colma, CA
M 3.0 25 km SW of Inverness, California
M 2.9 7 km SSW of Muir Beach, California
M 2.9 3 km SSW of San Francisco Zoo, CA

From the QuakeIndex catalogue, built from the USGS FDSN event service · within 50 km of the centre above.

After an earthquake here