Heavy rain fell on San Diego County early Friday bringing precipitation just days after the region was under a red flag warning.
A storm front swept through the county dropping most of the rainfall in the foothills and mountains but there were pockets of moderate rain in the valley overnight.
As of 4:45 a.m. PT, Poway had received a third of an inch of rain, San Marcos received nearly a quarter of an inch with Del Mar getting slightly less. Less than one-tenth of an inch of rain was measured at the Oceanside airport, according to the National Weather Service.
The heaviest ban was pushing out to Imperial County as of 6:30 a.m. There was potetntial for a thunderstorm until approximately 8 a.m.
Clouds will push through Friday with possible showers forecasted through 10 a.m.
The wet roads were slick with several spin-outs and crashes reported on highways around the county including Interstate 15.
The rains triggered mudslides in an area of the Los Angeles-area foothills scorched bare by a wildfire earlier this year.
LA County fire officials say a 4-foot-high flow of debris went through a home in the suburb of Glendora before dawn.
A flash flood warning was posted for that section of Southern California after a storm dumped hail and heavy rain in the foothills of the San Gabriel Mountains from Pasadena to as far east as Claremont.