This webpage is being phased out and is no longer maintained. Please use the new Real-time Earthquake Map instead and update your bookmark. See Quick Tips & User Guide.

2006 October 20 17:00:08 UTC

Earthquake Details

  • This event has been reviewed by a seismologist.
  • Friday, October 20, 2006 at 17:00:08 UTC
  • Friday, October 20, 2006 at 10:00:08 AM at epicenter
Location38.867°N, 122.788°W
Depth4.2 km (2.6 miles)
Distances15 km (10 miles) SW of Clearlake, California
50 km (30 miles) SE of Ukiah, California
50 km (30 miles) N of Santa Rosa, California
115 km (75 miles) WNW of SACRAMENTO, California
Location Uncertaintyhorizontal +/- 0.1 km (0.1 miles); depth +/- 0.5 km (0.3 miles)
ParametersNST=213, Nph=213, Dmin=7 km, Rmss=0.1 sec, Gp= 47°,
M-type=regional moment magnitude (Mw), Version=3
Event IDnc40190077
  • Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others.

Earthquake Summary

Small globe showing earthquakeSmall map showing earthquake

Felt Reports

Felt (V) at Middleton; (IV) at Clearlake, Hidden Valley Lake, Kelseyville and Lakeport; (III) at Calistoga, Cloverdale, Geyserville, Saint Helena and Santa Rosa.

Earthquake Information for California

Additional Information