"This is a whopper of a storm on the way," Russo said.
Showers could begin falling in North County as early as 2 p.m., but most of the precipitation is expected to come Thursday evening and Friday, Russo said. A few showers could linger through Saturday morning. the weekend.
More than 1 inch of rain could fall in San Diego coastal areas, Russo predicted. El Cajon could get more than 2 inches of rainfall, and Ramona and Julian could receive 3 inches before the storm system moves out of the area Saturday, Russo said. Borrego Springs may get more than an inch as well, she said.
The storm will hit San Diego in two waves, Russo said, with the first wave hitting Thursday evening. The second wave is expected to arrive early Friday morning. It should bring the heaviest rain all Friday and into Saturday morning.
Snow will likely fall in mountain areas with altitudes higher than 6,000 feet, according to the National Weather Service.
Gusty wind is also expected Thursday in the mountains and deserts. A wind advisory for those areas will remain in effect until 8 p.m. West winds of 20 to 30 miles per hour are forecast along with gusts that may reach 55 mph, forecasters said.
The wind could cause hazardous driving conditions, especially along Interstate 8, the NWS said. Visibility along some desert roadways could be reduced by blowing sand and dust.