QuakeIndex

Earthquakes in Santa Clara County, California

← Earthquakes in California

95

Unusual QuakeIndex 95 / 100

9 quakes of M1.5 or larger in the last 7 days within 50 km. Normal for here is 3 to 6 in a week.

Compared against Santa Clara 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 (M1.7–M2.4), 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

7 in the latest snapshot we hold; the full 7 days load from USGS as this page opens.

  1. 1.2 26 km WSW of Westley, CA 30 km (19 mi) SW · 5 km deep
  2. 1.3 26 km WSW of Westley, CA 30 km (19 mi) SW · 4 km deep
  3. 1.7 26 km WSW of Westley, CA 31 km (19 mi) SW · 4 km deep
  4. 1.4 26 km WSW of Westley, CA 31 km (19 mi) SW · 5 km deep
  5. 2.6 26 km WSW of Westley, CA 30 km (19 mi) SW · 3 km deep
  6. 1.3 26 km WSW of Westley, CA 30 km (19 mi) SW · 5 km deep
  7. 3.5 27 km WSW of Westley, CA 30 km (19 mi) SW · 2 km deep

Source USGS · snapshot of

Where this is

Centre 37.222, -121.690 — 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 5.1 15km ESE of Alum Rock, CA
M 4.6 1 km SE of Boulder Creek, CA
M 4.5 15 km SW of Westley, CA
M 4.2 4km SE of Aromas, CA
M 4.2 3 km of Aromas, CA
M 4.1 14 km ESE of East Foothills, California
M 4.0 5 km S of San Juan Bautista, CA
M 4.0 2 km ESE of Aromas, California

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

After an earthquake here