Get your rain boots ready. Much of South Louisiana, including the New Orleans and Baton Rouge areas, are under a flash flood watch until 6 p.m. The watch was put into effect beginning at 6 a.m. Saturday. Rain from 2 to 4 inches is expected, with higher amounts possible in some areas, forecasters said. “Have a way to receive warnings if they’re issued, and never drive through flooded roads,” the Nation Weather Service said Saturday morning. Low temperatures are expected to reach the 50s throughout the day, and drop into the 40s overnight. New Orleans-area weather updates: Track storms on radar Baton Rouge weather: Track storms on radar Check back for updates.