LOS ANGELES—A winter storm will make its way into the Southland late March 9, with some mountain areas potentially seeing more than a foot of snow and the rest of the region expected to see rainy conditions into March 11. A winter storm watch will take effect March 9 and continue until Thursday evening for Los Angeles County mountains, excluding the Santa Monica range, with the National Weather Service anticipating snow accumulations of 6 to 12 inches and potentially up to 15 inches above 4,500 feet. The snowy conditions will be joined by southwest winds of 15 to 30 miles per hour (mph), with gusts up to 45 mph. Forecasters warned that conditions will make driving hazardous in the county’s northern reaches, with the Golden State and Antelope Valley freeways likely to be affected. “A rain band looks to move into the region late Tuesday afternoon through Wednesday morning, then …