Overview
- The National Weather Service issued a Freeze Warning for Adams, Cumberland, Franklin and York counties from 2 a.m. to 9 a.m. Saturday.
- A Frost Advisory covers Dauphin, Lancaster and Lebanon counties for the same hours, with additional advisories in Lower Bucks and Berks counties.
- The advisory area extends to portions of Delaware, northeast Maryland, New Jersey and east central and southeast Pennsylvania, remaining in effect until 9 a.m.
- Temperatures are expected to fall to around 32°F with sub‑freezing pockets, supporting widespread frost formation.
- Officials warn frost and freeze conditions can kill crops and sensitive vegetation and may damage unprotected outdoor plumbing, noting valleys and sheltered rural areas will be coldest.