Drivers are being warned of possible snow squalls, reduced visibility and roadway freezing Sunday as an arctic cold front moves through New Jersey. The cold front is expected to sweep through the region starting a few hours after sunrise in eastern Pennsylvania before moving toward the I-95 corridor by late morning or early afternoon, the National Weather Service said. Snow squalls are intense bursts of heavy snow accompanied by strong winds that can quickly coat roads and reduce visibility for drivers. Many snow squalls are short-lived, but some can last as long as an hour or more. “During a …