LOS ANGELES -- An earthquake of 4.4 magnitude struck about 4 miles from San Bernardino, Calif., on Tuesday, the U.S. Geological Survey reported, jangling nerves but not resulting in any reports of damage.
The agency classified the temblor as light. The epicenter was near Rialto, Calif., according to the agency.
The Pasadena, Calif., Fire Department tweeted that the small quake was a "Good reminder to be prepared."
In the past 10 days, there have been four earthquakes of magnitude 3 or greater nearby, according to the Los Angeles Times.
"Felt hard in Rancho Cucamonga," wrote Keith Lair, a resident who took to Twitter.
Lucy Jones, a seismologist for the U.S. Geological Survey, told NBC4 News that the quake occurred on near the San Jacinto Fault in a geologically active area.