An earthquake with a preliminary magnitude 4.1 struck northern Sonoma County Monday morning, officials said. According to the U.S. Geological Survey, the earthquake struck less than a mile northwest of the Geysers at 7:08 a.m. An aftershock with a preliminary magnitude of 2.8 struck the same area less than a minute later.

SONOMA COUNTY, CA - A preliminary 3.9 magnitude quake was registered close to The Geysers Monday morning, according to the U.S. Geological Survey.

Morgan Geyser was 12 when she and a friend lured their classmate into the woods and stabbed her 19 times to appease the fictional Slender Man.

On a chilly Saturday night, Morgan Geyser left the group home where she was living in Madison, Wisconsin, and met up with an acquaintance on a quiet residential street nearby.

SONOMA COUNTY, CA - A preliminary 2.2 magnitude quake was reported close to The Geysers Monday morning, according to the U.S. Geological Survey.