Here we go again: chances of rain Friday are estimated at 60%, and National Weather Service has started a flash flood watch: 

..FLASH FLOOD WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY MORNING FOR THE RECENT BURN AREAS…

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A

* FLASH FLOOD WATCH FOR THE RECENT BURN AREAS IN LOS ANGELES COUNTY IN   SOUTHWESTERN CALIFORNIA.

* FROM FRIDAY EVENING THROUGH SATURDAY MORNING

* RAINFALL RATES BETWEEN ONE HALF AND ONE INCH PER HOUR WILL BE POSSIBLE AT TIMES DURING THE STORM…WITH THE HIGHEST RATES EXPECTED ON SOUTH AND SOUTHWEST FACING MOUNTAIN AND FOOTHILL LOCATIONS. THESE ANTICIPATED RAINFALL RATES WILL POSE A THREAT FOR SIGNIFICANT FLASH FLOODING AND DEBRIS FLOWS IN THE RECENT BURN AREAS.

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

SOUTHERN CALIFORNIA RESIDENTS…ESPECIALLY THOSE WHO LIVE IN OR BELOW THE RECENTLY BURNED AREAS ARE URGED TO TAKE THE STEPS NECESSARY TO PROTECT THEIR PROPERTY. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT AND FOLLOW DIRECTIONS OF EMERGENCY PREPAREDNESS OFFICIALS. EVACUATIONS SHOULD BEGIN IMMEDIATELY WITHOUT WAITING FOR INSTRUCTIONS IF HEAVY FLOWS OF WATER OR MUD ARE OBSERVED.