A cold Pacific storm to the north pushed its way into San Diego County Wednesday, bringing with it some rain.
Heavy, widespread showers and the possibility of thunderstorms and lightning along the coast were expected as the storm moved south from the Los Angeles area, according to NBC 7 Meteorologist Sheena Parveen.
First Alert Doppler 7 offers viewers real-time data on the location of rain.
Precipitation which began just before lunchtime became heavier and more widespread as the day progressed.
Rainfall led to flooding and closures of several county roads. It forced the closure of Sorrento Valley Road near the Interstate 5/I-805 interchange, a road that has seen its share of flooding.
The city of San Marcos tweeted at around 7:15 p.m. that Bent Avenue and Via Vera Cruz between Discovery Street and San Marcos Boulevard were closed due to flooding, adding, "San Marcos, you know the drill."
In Lakeside, an olive tree split in half and crashed onto the sidewalk of Ashwood Street, feet away from where a couple was walking their dog.
Jean Paul said he heard cracking noises, then he "turned around and whop, saw it come down. I thought, 'Oh, man, a tree just came down.'"
In Fallbrook at the Rancho Monserate Country Club, where nearly 70 mobile home units were destroyed in last fall’s Lilac Fire, sandbags were stacked along the nearby bare hillside to protect the community from mudslides.
SDPD said a small sinkhole opened up in the College Area but officers were able to block it off before anyone drove into it.
SeaWorld San Diego announced it would be closed Thursday because of the heavy rain.
Over the course of two days, areas from the coast to the inland valleys could see up to two inches of rain while the mountains may see more than that. Desert areas could see a half inch to three-quarters of an inch.
NBC 7 meteorologist Dagmar Midcap said there was an atmospheric river moving through the county during the early evening that would eventually dip south of the border.
Behind it, a low-pressure system was making its way into the county overnight Wednesday.
No weather watches or advisories are in effect for the county.
By 5:30 p.m. Wednesday, Encinitas had seen .86 inches of rain, and La Jolla, Chula Vista, Escondido, and Palomar had all seen between a third and two-thirds of an inch of rain.
Midcap said Wednesday evening's slow and steady rain would give way to more spotty showers overnight.
The heaviest downpours, which were expected on Thursday, may be confined to southern San Diego County. Thunderstorms could be possible Thursday, Midcap said.
The storm could bring snow to San Diego's mountains at elevations above 6,000 feet, Parveen said.
Some lingering storm clouds may bring light rainfall on Friday before San the storm moves east towards Arizona.