An weak upper trough dropped through central California during the evening of November 19 and the morning of November 20. This resulted in fog lifting into a low cloud deck shortly after developing in the San Joaquin Valley during the morning of November 20.
Every event with a place to put it; 1 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.
An weak upper trough dropped through central California during the evening of November 19 and the morning of November 20. This resulted in fog lifting into a low cloud deck shortly after developing in the San Joaquin Valley during the morning of November 20. Some dense fog did impact SR 99 during the morning of November 20 between Kingsburg and Tulare, but the fog had lifted by late morning and skies cleared out throughout the valley during the afternoon.
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Visibility below a quarter mile was reported in Visalia.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2021Every state in 2021This day in weather historyWarnings in California, November 2021
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: 985884.