Some Southern Californians were awakened by shaking from a magnitude-3.4 earthquake early Tuesday centered in southwestern San Bernardino County.
The pre-dawn quake was centered near Rancho Cucamonga and Ontario at about 3:30 a.m. It was 4.3 miles deep.
There are no reports of damage or injuries.
Shaking was reported in San Bernardino and Riverside counties, La Verne, Rialto, Glendora, Orange, Fullerton, Anaheim and elsewhere.
Get top local stories in Southern California delivered to you every morning. >Sign up for NBC LA's News Headlines newsletter.
Photos: What to Keep in Your Disaster Emergency Kit
About 25 miles to the northwest, another early morning earthquake rattled the mountain community of Alpine Village. The magnitude 3.3 earthquake was recorded at about 5 a.m. at a depth of 7.4 miles.
The earthquake was 18.4 miles southwest of La Quinta, 19.4 miles south southwest of Palm Desert and 19.7 miles south southwest of Rancho Mirage.
Local
Get Los Angeles's latest local news on crime, entertainment, weather, schools, COVID, cost of living and more. Here's your go-to source for today's LA news.
No damage or injuries were reported.
About 200 earthquakes in the magnitude-3.0 to 4.0 range are recorded in California every year. They're often felt, but rarely cause damage.