A preliminary magnitude 3.6 earthquake rattled San Bernardino County late Monday evening, marking the third temblor to hit the region within a 12 hour time period, according to the United States Geological Survey.

A magnitude 3.5 earthquake was reported Monday near San Bernardino at 9:44 a.m., followed by a 3.0 quake four minutes later, the U.S. Geological Survey reported.

Some described the trio of earthquakes in San Bernardino on Monday as quick jolts that rattled nerves and frightened pets in the Victor Valley. A magnitude 3.5 earthquake occurred at about 9:44 a.m. and about 3 miles north-northeast of San Bernardino,