Blog: Heavy rain and mudslides are possible as L.A. heads into a week of storms

There is the potential for thunderstorms and for rainfall rates to rise to 0.5 to 0.75 inches per hour — just enough to start producing flows of mud and debris, Thompson said. If thunderstorms develop, there might be even higher rainfall rates in small geographic areas. There may be shallow mud and debris flows near recent burn areas — mainly a nuisance, although localized damage is possible, the weather service said.