The first of three moderate rain storms spread out across San Diego County Saturday, where it dropped up to a half-inch of rain at the coast, according to the National Weather Service. As of 4 p.m., the fairly warm system from the central Pacific had soaked Solana Beach with 0.52 inches, Fallbrook with 0.72 inches and Palomar Mountain with 1.48 inches. Other areas saw much less precipitation, such as the San Diego International Airport with only 0.17 inches. A wind advisory is in effect until midnight in the mountains. Forecasters say isolated showers could last into Sunday.