WESTFIELD, NJ — Westfield Police Chief David Wayman sent out a message Saturday afternoon via Nixle advising residents that black ice is expected to develop during the evening and overnight hours. 

“Temperatures will fall into the 20s, causing melted snow to refreeze,” Wayman warned. “Hazardous condition will develop on untreated surfaces.” 

He urged people to please travel only if necessary and to use caution if walking outside.