Dense Fog, Sw S.J. Valley
- When
- February 3, 1:15 AM PST to 9:39 AM PST
- Where
- Sw S.J. Valley forecast zone
- Reported by
- ASOS
Visibility below a quarter mile was reported in Hanford.
Dense Fog in California, February 3, 2018
While fog was more localized on February 2, the large ridge centered off the California coast strengthened overnight resulting in dense fog becoming more prevalent during the morning of February 3 a low level inversion persisted over the San Joaquin Valley. The fog dissipated by late morning.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
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.
What happened
The episode as NWS HNX wrote it up.
While fog was more localized on February 2, the large ridge centered off the California coast strengthened overnight resulting in dense fog becoming more prevalent during the morning of February 3 a low level inversion persisted over the San Joaquin Valley. The fog dissipated by late morning.
Event by event
2 dense fog. Local standard time, as filed.
Dense Fog, E Central S.J. Valley
- When
- February 3, 2:15 AM PST to 4:55 AM PST
- Where
- E Central S.J. Valley forecast zone
- Reported by
- AWOS
Visibility below a quarter mile was reported in Atwater.
What these are
- Dense Fog
- Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Winter Weather in Wisconsin, February 3 to 4, 2018
- Winter Weather in Iowa, February 3, 2018
- Winter Weather in Minnesota, February 3, 2018
- Winter Weather in Wisconsin, February 3, 2018
- Winter Storm and Winter Weather in Montana, February 3 to 5, 2018
- Winter Storm and High Wind in Wyoming, February 3 to 5, 2018
- Winter Storm and Winter Weather in West Virginia, February 3 to 7, 2018
- Winter Weather in Nebraska, February 3 to 4, 2018
- Winter Weather in Michigan, February 3 to 4, 2018
- Cold in South Dakota, February 3 to 4, 2018
- Winter Storm in Wyoming, February 3 to 5, 2018
- Heavy Snow in Montana, February 3 to 4, 2018
More
Every storm in California in 2018Every state in 2018This day in weather historyWarnings in California, February 2018
Sources
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: 729647, 729646.