Flash Flood Warning for Arcadia, CA until 4:45PM today. 
From the National Weather Service @2:57PM 10-11-2012:
THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LOS ANGELES COUNTY IN SOUTHWEST CALIFORNIA... THIS INCLUDES THE CITY OF ARCADIA UNTIL 445 PM PDT * AT 245 PM PDT.
DOPPLER RADAR INDICATED STRONG AND NEARLY STATIONARY THUNDERSTORMS PRODUCING RAINFALL RATES IN EXCESS OF ONE INCH PER HOUR ACROSS THE SAN GABRIEL MOUNTAINS AND FOOTHILLS. FLASH FLOODING IS LIKELY ACROSS THE WARNING AREA.
PEOPLE IN LOCATIONS NEAR THE STATION FIRE BURN AREA SHOULD BE ESPECIALLY ALERT FOR FLOODING AND DEBRIS FLOWS. PRECAUTIONARY/PREPAREDNESS ACTIONS.
Instructions:
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE.
Address/Location
Arcadia Police Department
250 W Huntington Dr
Arcadia, CA 91007
Contact
Emergency: 9-1-1
Non-emergencies: 626-574-5150
Alert Details
- Severity:
- Severe - Significant threat to life or property
- Urgency:
- Immediate - Responsive action SHOULD be taken immediately
- Certainty:
- Likely (p > ~50%)
- Category:
- Meteorological (inc. flood)
- Event:
- Flash Flood Warning