High pressure strengthened over California during the morning of December 23. While a mild airmass prevailed over the higher elevations, inversion conditions over the San Joaquin Valley along with clear skies and light winds made conditions favorable for widespread dense fog to form during the early morning of December 23.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS HNX wrote it up.
High pressure strengthened over California during the morning of December 23. While a mild airmass prevailed over the higher elevations, inversion conditions over the San Joaquin Valley along with clear skies and light winds made conditions favorable for widespread dense fog to form during the early morning of December 23. The fog persisted until late morning when it lifted into a low cloud deck.
The national radar mosaic for the moment the first event began.
8 dense fog. Local standard time, as filed.
Visibility below a quarter mile was reported in Delano. Several webcams showed visibility below 1000 feet.
Visibility below a quarter mile was reported in Bakersfield. Several webcams showed visibility below 1000 feet.
Visibility below a quarter mile was reported in Reedley, Visalia and Porterville. Several webcams showed visibility below 1000 feet.
Several webcams showed visibility below 1000 feet.
Visibility below a quarter mile was reported in Hanford. Several webcams showed visibility below 1000 feet.
Visibility below a quarter mile was reported in Fresno. Several webcams showed visibility below 1000 feet. A trained spotter reported visibility near 100 feet near Sanger.
Visibility below a quarter mile was reported in Merced and Madera. Several webcams showed visibility below 1000 feet.
Visibility below a quarter mile was reported in Lemoore. Several webcams showed visibility below 1000 feet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2022Every state in 2022This day in weather historyWarnings in California, December 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1061488, 1061491, 1061490, 1061492, 1061489, 1061484, 1061481, 1061482.