Overview
- NWS Birmingham’s advisory runs 3 a.m. to 9 a.m. CT Friday for 27 central counties, including Birmingham, Tuscaloosa, Hoover, and Selma.
- A separate advisory covers parts of north Alabama from 1 a.m. to 8 a.m. CT, with lows near 35 to 36 degrees likely to produce patchy frost.
- Forecasters say frost can form even where air temperatures remain slightly above freezing under clear skies and light winds.
- More than 1 million residents fall within the alerts, with officials urging protection for cold-sensitive vegetation and care for pets.
- Daytime highs rebound to the mid-60s Friday, with frost possible again Saturday morning as a late-autumn cooldown persists into next week.