Despite the presence of a low pressure center being situated of the Southern California coast providing for some high clouds during much of the period, persistent dense fog impacted portions of the central San Joaquin Valley between Merced and Madera with the dense fog being more intermittent elsewhere in the San Joaquin Valley between the evening of January 14 and the morning of January 16. The fog finally dissipated by midday on January 16 as the offshore low provided for enough mixing to help dissipate  the fog.  The dense fog was at least partially responsible for a fatal accident involving three cars near Biola in Fresno County during the evening of January 14.

Dense Fog in MERCED-MADERA-MENDOTA, CALIFORNIA
From 14-JAN-22 17:20:00 to 16-JAN-22 11:02:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility below a quarter mile was reported in Atwater, Merced and Madera. Several webcams showed visibility below 1000 feet.

Dense Fog in WEST SIDE OF FRESNO AND KINGS COUNTIES, CALIFORNIA
From 14-JAN-22 18:37:00 to 15-JAN-22 03:10:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility below a quarter mile was reported in Lemoore. Several webcams showed visibility below 1000 feet.

Dense Fog in FRESNO - CLOVIS, CALIFORNIA
From 14-JAN-22 21:53:00 to 15-JAN-22 07:17:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility below a quarter mile was reported in Fresno. Several webcams showed visibility below 1000 feet.

Dense Fog in VISALIA - PORTERVILLE - REEDLEY, CALIFORNIA
From 14-JAN-22 15:05:00 to 16-JAN-22 09:45:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility below a quarter mile was reported in Visalia and Porterville. Several webcams showed visibility below 1000 feet.

Dense Fog in BAKERSFIELD, CALIFORNIA
From 15-JAN-22 03:35:00 to 16-JAN-22 09:50:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility below a quarter mile was reported in Bakersfield. Several webcams showed visibility below 1000 feet.

Dense Fog in DELANO - WASCO - SHAFTER, CALIFORNIA
From 14-JAN-22 18:55:00 to 16-JAN-22 09:55:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility below a quarter mile was reported in Delano. Several webcams showed visibility below 1000 feet.

Dense Fog in CARUTHERS - SAN JOAQUIN - SELMA, CALIFORNIA
From 14-JAN-22 18:00:00 to 16-JAN-22 10:00:00 (PST-8)
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Department of Highways

Several webcams showed visibility below 1000 feet. A collision involving three vehicles at the intersection of W. Shaw Ave. and W. Bishop Ave near Biola resulted in one fatality. Visibility was reported be below 100 feet at the time by California Highway Patrol.

Dense Fog in HANFORD - CORCORAN - LEMOORE, CALIFORNIA
From 14-JAN-22 18:35:00 to 16-JAN-22 10:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility below a quarter mile was reported in Hanford. Several webcams showed visibility below 1000 feet.

Avalanche in LOS BANOS-DOS PALOS, CALIFORNIA
From 16-JAN-22 07:00:00 to 16-JAN-22 11:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported visibility below 1000 feet on SR 152 between Los Banos and the SR 59 exchange.