A fast-moving fire erupted in hillside terrain near Murrieta on Wednesday night, quickly scorching almost 1,000 acres and prompting mandatory evacuation orders for multiple residential enclaves as fire officials urged others nearby to voluntarily leave. At least 300 firefighters responded to the Tenaja fire in Riverside County, which sent up an eerie and massive plume of smoke at dusk. By nightfall, hillsides were aglow in hot and windy conditions on a day marked by thunderstorms in the region. By late Wednesday, the fire had burned hillsides in unincorporated Riverside County and appeared to be headed northeast toward Murrieta. .....