Dense Fog in E Central S.j. Valley, California

Visibility below a quarter mile was reported in Fresno, Madera, Merced and Atwater.

High pressure strengthened over the area on December 8. With winds remaining light in the San Joaquin Valley and skies having cleared out the previous afternoon. Widespread dense fog developed in the San Joaquin Valley during the early morning hours impacting travel along several of the major highways in the valley. While the fog lifted into a low clouds deck across most the the valley, the dense fog persisted in the Merced and Atwater areas into the afternoon and reformed during the evening. Visibility finally improved during the early morning of December 9 as the fog lifted into a low cloud deck.