March 21, 2012 11:54 am Whitney Southwick's Afternoon Weather Forecast for Wednesday March 21st, 2012 Whitney Southwick’s afternoon weather forecast for Wednesday, March 21, 2012. US & World Videos 2:26 Shark attacks swimmer in Del Mar, beaches closed 2:38 National City family honors teen bicyclist fatally hit by car on way to school 3:13 Spring Valley protesters call on San Diego County to scrap homeless shelter project 2:26 Rubio's closes 13 locations in San Diego County 2:49 Mexico set to elect a new president this weekend