India, Oct. 12 -- Newport Beach in Southern California has declared a local emergency after coastal flooding submerged streets, stranded vehicles and damaged homes and businesses on the Balboa Peninsula. The city is preparing for more flooding as high surf and unusually elevated tides continue to threaten the coastline.

The flooding occurred on Friday, October 9, as ocean water surged onto streets and properties. City officials said crews were working to strengthen beach barriers, drain flooded roads and prepare vulnerable areas for another round of high tides over the weekend.

Flooding affected several blocks of the Balboa Peninsula, with some streets covered in water deep enough to leave vehicles stranded. Local reports described cars...