FRESNO, CA — Thick, persistent fog settled over the Central Valley this week, creating dangerous driving conditions that led to several major accidents, including a collision that left a teenage driver in critical condition.

One major crash occurred Friday morning, Jan. 16, on Minnewawa Avenue. According to ABC30, the teenager was critically injured when her van hit a semi-truck in the heavy fog.

Earlier that week, the California Highway Patrol (CHP) responded to a chain-reaction pileup involving four semi-trucks on Highway 43, east of Laton. Officials said the accident happened because it was difficult for drivers to see through the thick fog. The pileup began when one truck hit another truck's trailer.

Historical Fog Intensity

Meteorologists and driving experts say the current weather is some of the most intense seen in the region in recent memory. ABC30 Chief Meteorologist Kevin Musso described the fog as the densest he has seen in years, and likely decades. Sylvia Vargas, owner of the Learn 2 Drive Center, compared the current conditions to the thick fog seen during the 1970s and 1980s.

Road Hazards and Safety Advice

In addition to low visibility, police are warning drivers about other road hazards. CHP Officer Anthony Daulton noted that fog leaves moisture on the road, making the pavement slick and increasing the danger of skidding.

To help prevent accidents, safety experts recommend that motorists follow these steps:

  • Manually turn on low-beam headlights instead of relying on the automatic setting.
  • Use hazard lights when driving slowly.
  • Avoid abrupt stops on the road.

Impact on Driver Training

The extreme weather has also changed how local students learn to drive. Vargas said the Learn 2 Drive Center has adjusted its lessons to focus on fog safety and driving in low visibility. This change helps make sure students are ready for the dangerous weather currently hitting the area.

While fog is common during Valley winters, experts say these unusually thick conditions require extra caution from all drivers. Fog is expected to stay in the region throughout the season.