Over 70 schools reported foggy day schedules throughout the Valley; a few had to cancel buses altogether this morning. Oak Valley even canceled classes for the day.
At its worst, the fog brought zero visibility from as far north as Sacramento to Bakersfield to the south.
Action News took a satellite picture of the fog situation at about 8 Tuesday morning. The entire Valley appeared to be covered in a cloud.
As of 11:00am the fog was still pretty dense but was lifting a bit.