Overview

• Advisories cover multiple county clusters in central, western and northeastern Pennsylvania, with a separate alert for Tompkins and Cortland counties in New York.
• End times vary by location, with several advisories scheduled to expire between 9 a.m. and 10 a.m. Friday.
• The NWS notes most areas face visibility of a half mile to one mile, with localized spots dropping to a quarter mile or near zero.
• Drivers are advised to reduce speed, use low‑beam headlights, increase following distance, and pull over safely if visibility collapses.
• A 7:35 a.m. update added Southern Centre County under an advisory through 10 a.m., with local outlets distributing the alerts via an automated NWS feed.