Green-flag warning of possible flooding issued in Sierra Madre

With rain falling across Southern California, the foothill city of Sierra Madre has issued a green-flag warning to alert residents of possible flooding, mud and debris.

The warning was triggered Thursday afternoon when the National Weather Service forecast an 80% chance of rain.

Up to 2,000 of the city's residents live in the canyon and foothill areas most effected by heavy rain, said a spokesman for the Sierra Madre Police Department.

The city last dealt with small amounts of debris and mudflows in March, he said, adding that the latest warning would not be rescinded until the storm has passed.

The city uses a green-, yellow- and red-flag system to inform citizens about possible hazardous weather conditions.

Green-flag alerts ask residents to monitor weather conditions and be ready for possible evacuations.     

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