MARYSVILLE – Caltrans is reminding motorists to plan for extra travel time and remember safe driving tips for foggy conditions this holiday season.
Throughout the fall, winter and early spring, the Central Valley often finds itself shrouded in thick ground fog, better known as Tule fog, which emerges after rains saturate the soil.
Foggy conditions can form along the Sierra Nevada within mountain valleys in a similar fashion. At the higher peaks, fog can also form when moist winds blow toward a mountain and cause the air to rise and cool.
The National Weather Service forecast includes the potential for valley fog Saturday morning but less extensive than this morning due to increasing northly winds.