Overview
- NWS Hanford issued a new dense fog advisory at 6:23 p.m. Sunday for the I-5 Grapevine and surrounding foothills, in effect until 11 a.m. Monday.
- Visibility is expected to drop to a quarter mile or less at elevations between 1,000 and 2,500 feet, including areas such as Tehachapi and the Frazier Mountain communities.
- A separate freezing fog advisory in north Alabama ran through 9 a.m. Sunday for Madison, Marshall, Jackson and DeKalb counties.
- Forecasters said the freezing fog was most widespread in the Tennessee River, Paint Rock and Big Wills valleys and around Lake Guntersville, with potential for rime and black ice.
- The National Weather Service urges drivers to slow down, use low-beam headlights, leave extra space, and, if visibility nears zero, activate hazards and pull into a safe location to stop.