Dense Fog in Western San Joaquin Valley, California

Visibility below a quarter mile was reported in Lemoore.

An upper ridge strengthened over the region between the afternoon of January 17 and the morning of January 18. With clear skies, light winds and inversion conditions over the San Joaquin Valley, widespread dense fog formed overnight and reduced visibility below a quarter mile across much of the valley north of Kern County until late morning when the fog lifted into a low cloud deck. The low clouds hung on across much of the valley for much of the day and kept visibility above a quarter mile the following night.