Locals are on urban and small stream flood watch as hail, dangerous lightning and heavy rain are expected overnight through Tujunga, Sunland and La Crescenta, according to the National Weather Service.
A flood warning is issued until 7:45 p.m. throughout , where minor flooding is likely in and below the recent burn areas, the NWS reported.
"Rainfall gauges and trained weather spotters in and near this storm are reporting as much as one half inch of rainfall has occurred in one half hour," according to the NWS.
"Runoff from this tunderstorm may swell creeks, streams and washes around Sunland, Tujunga and La Crescenta late this afternoon and evening," the NWS reported.
Officials urge locals to not drive on areas where water covers the roadway because the depth may be too deep for a car to cross safely.
"It takes only a few inches of swiftly flowing water to carry vehicles away," the NWS reported.
Authorities warned that if threatening weather approaches your area to take shelter in a secured building.
Here is the expected forecast:
Sunday: A 20 percent chance of showers and thunderstorms before 10 p.m. Partly cloudy, with a low around 44 degrees; Wind gusts could reach 15 mph at night
Monday: High near 62 degrees, low around 45 degrees and northeast wind around 5 mph
Tuesday: High near 67; Low around 46 degrees
Wednesday: High near 71; Low around 49 degrees
Thursday: High near 69 degrees; Low around 51 degrees
Veterans Day: High near 64 degrees; Low around 48 degrees