Flood Watch Through 5 AM PDT Friday. Heavy rain may cause flooding in northeastern Lassen County and Surprise Valley, California, and northern Washoe and northwestern Pershing counties, Nevada. Storm totals of 0.5–1.5 inches, locally 2 inches or more, are possible. Small streams may flood rural roads, while sediment from the Biscar and S1-Vya burn scars may clog culverts. Runoff may linger overnight. Never drive through flooded roads.