Slow-moving storm produces on-and-off rain throughout county Many residents see double rainbow between storms Slow-moving storm brings off-and-on rain throughout San Diego County. and last updated 2021-03-11 02:24:30-05 SAN DIEGO COUNTY (KGTV)-- A slow-moving storm rolled over San Diego County, producing on-and-off rain throughout the day. Impressive clouds floated atop San Diego County, some becoming rainmakers, others dissipating. The rain was like a light switch through the day, on-and-off precipitating starting before sunrise. In North and East County, residents saw slushy rain before lun...