As the low pressure system that was responsible for the strong winds on December 4 and 5 and the snow which disrupted travel over the Kern County Mountains on December 6 moved east of our area, high pressure built in bringing clearing skies and diminished winds to the San Joaquin Valley on the morning of December 7. This resulted in the formation of widespread dense fog over the San Joaquin…
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.
As the low pressure system that was responsible for the strong winds on December 4 and 5 and the snow which disrupted travel over the Kern County Mountains on December 6 moved east of our area, high pressure built in bringing clearing skies and diminished winds to the San Joaquin Valley on the morning of December 7. This resulted in the formation of widespread dense fog over the San Joaquin Valley which adversely impacted travel on several major highways including on State Routes 99, 41, 180 and 152 and caused several school districts to ether delay morning bus service or open late. The fog dissipated in most of the valley by late morning.
4 dense fog. Local standard time, as filed.
Visibility below a quarter mile was reported in Fresno, Madera, Merced and Atwater. Several school districts either delayed bus service or opened late due to dense fog.
Visibility below a quarter mile was reported in Visalia, Porterville and Bakersfield. Several school districts either delayed bus service or opened late due to dense fog.
Visibility below a quarter mile was reported in Hanford.
Several school districts either delayed bus service or opened late due to dense fog.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2018Every state in 2018This day in weather historyWarnings in California, December 2018
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: 788642, 788645, 788644, 788641.