9/1/2011 4.2 earthquake rumbles across Los Angeles

Source: AP and CBS
Date: September 1, 2011 5:20 PM

(CBS/AP) LOS ANGELES - A magnitude-4.2 earthquake and aftershocks rattled nerves across the Los Angeles region Thursday, but there were no immediate reports of damage.
...
Read full article here

Editor's Note: The nearest nuclear power plant I could find was the San Onofre Nuclear Generating Station which is 60 miles SE of Los Angeles.

View Live Ustream Radiation Detectors in a larger map