In past years, the Central Valley in California has been infamous for its dense winter fog, sometimes called tule fog, that hugs the ground and limits visibility to just a few feet. Driving in tule fog is incredibly dangerous and multi-car freeway pileups especially during commute hours are not uncommon. Dense tule fogs have been mostly absent the past few years possibly due to the drought and overly dry conditions that have kept this fog from forming. We do still get the occasional foggy day and this past week, on a couple of days for a few hours during my morning walk, the fog returned. It’s a dense fog but it’s not nearly the dense tule fog that can so dangerous. Visibility was limited but it’s still possible to see three Valley Oaks in a row.