* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Caruthers - San Joaquin - Selma, Delano-Wasco-Shafter, Hanford - Corcoran - Lemoore, Merced - Madera - Mendota, Southeast San Joaquin Valley, and Visalia - Porterville - Reedley.
* WHEN...From midnight tonight to 10 AM PST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.