Newark Mayor Cory Booker is warning city residents not to underestimate the impact of the major winter storm that's already edging into the area.

Light freezing rain was falling on New Jersey's largest city by Friday afternoon. But Booker said not to be lulled into complacency since the heavy snow accumulation is expected to happen overnight. He says forecasters have said Newark could see more than a foot of snow by Saturday morning.

The mayor also urged residents to make contingency plans because of the likelihood of widespread power outages. He compared the coming storm to a late October 2011 storm that dumped heavy snow and felled trees and power lines, causing major outages.

Booker told residents to prepare for the storm as if they were preparing for Superstorm Sandy.

Copyright 2013 The Associated Press.