Dense Fog, W Central S.J. Valley
- When
- December 10, 2:00 AM PST to December 12, 10:00 AM PST
- Where
- W Central S.J. Valley forecast zone
- Reported by
- ASOS
Behind a departing low, an upper-level ridge over the eastern Pacific built into California, bringing more stratus and patchy dense fog during the morning of December 8th. A weak upper-level disturbance moved over the central California interior, bringing light rain to the central and southern San Joaquin Valley; a few hundredths of an inch fell at Fresno.
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.
Behind a departing low, an upper-level ridge over the eastern Pacific built into California, bringing more stratus and patchy dense fog during the morning of December 8th. A weak upper-level disturbance moved over the central California interior, bringing light rain to the central and southern San Joaquin Valley; a few hundredths of an inch fell at Fresno. High pressure rebuilt over the central California interior, bringing more dense fog to the central and southern San Joaquin Valley. The worst dense fog conditions were prevalent during much of the overnight and morning hours on December 9, 10, 11, and 12, when visibilities were lowered to near zero in some areas due to very dense fog.
4 dense fog. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2008Every state in 2008This day in weather historyWarnings in California, December 2008
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 2026-10-01. Each event’s entry at NCEI: 147588, 147589, 147590, 147591.