Central Arizona was rocked by a trio of small earthquakes late Sunday, with the largest rattling homes across the Phoenix metro area.
The U.S. Geological Survey says a magnitude-4.1 temblor struck at 11:29 p.m. MST Sunday, followed by a magnitude-4.0 quake about 20 minutes later. A smaller, magnitude-3.2 quake, hit at 9 p.m. There were no reports of injuries or any notable damage.
The USGS says all the quakes ranged from 3-6 miles in depth and were centered near Black Canyon City, about 45 miles north of Phoenix.
The agency's website recorded scores of responses from people in such suburban Phoenix cities as Cave Creek, Peoria, Scottsdale and Glendale who reported feeling at least one of the quakes.
The Arizona Republic reported that those who felt the largest earthquake reported hearing one quick rap and compared it to an unexpected knock at the door.
"I just heard this rumble and this movement and I thought it was my dog falling off the bed," Tempe City Concilwoman Lauren Kuby told the paper. "It felt like a rumble and a slight movement and then like a thud.”
"In general, it’s relatively small,” Zachary Reeves of the USGS said of the magnitude-4.1 peak earthquake Sunday, the largest of the series. “If people are in bed then people may not even be woken up by it.”
The sheriff's offices in Yavapai County and Maricopa counties didn't immediately comment when contacted by the Associated Press about the quakes.
A magnitude-4.7 earthquake shook the Oak Creek Canyon fault line near Sedona this past December, while other tremors rocked an area near the New Mexico state line, the Republic said.
The Associated Press contributed to this report.