Three earthquakes shook Southern California within about a half hour Monday morning, centered around the unincorporated Lennox area, near Inglewood -- with the first two considered foreshocks.
No damage was reported.
The largest -- a sharp, magnitude 4.0, according to the U.S. Geological Survey -- was at 4:44 a.m., about a mile east-northeast of Lennox.
"Would have been felt by most people awake in LA," earthquake expert Lucy Jones tweeted of the largest temblor. "Was thrust, probably not on any mapped fault."
The first quake, downgraded from 3.3 to 3.0, came at 4:15 a.m. and was centered about a mile east-northeast of the Lennox area. It was felt from the South Bay to the Montebello area, and to the Burbank area, according to the USGS.
A 2.5-magnitude earthquake was felt within a minute later and was centered .62 miles northwest of Lennox.
The first two were foreshocks, Jones said.
The third quake was more widely felt around the Southland.
"All the events are at the same depth," Jones said.
The Los Angeles County Fire Department and sheriff's department both said no damage was reported.
"A 4.0 earthquake in Inglewood shook the L.A. area this morning," Los Angeles Mayor Eric Garcetti tweeted. "Our @LAFD conducted its routine survey of the City of L.A. and reports no damage."