Hanford, California – A Dense Fog Advisory remains in effect until noon today for large portions of central California, creating hazardous travel conditions across major transportation corridors.
According to the National Weather Service in Hanford, dense fog continues to affect the San Joaquin Valley, the Tehachapi Mountains, and the Grapevine, with visibility reduced to 800 feet or less in some locations. The advisory highlights a high transportation risk, particularly during the morning commute.
Roadways impacted include Interstate 5 through the Grapevine, State Route 99 across the San Joaquin Valley, and multiple mountain and valley highways such as Highways 41, 43, 58, 180, 198, and 152. Drivers may encounter rapidly changing visibility, especially in low-lying areas and near agricultural fields.
The National Weather Service advises motorists to slow down, increase following distance, and use low-beam headlights, noting that automatic high-beam systems may reduce visibility in dense fog. Travelers are also urged to anticipate delays and remain alert for sudden stops.
Forecasters report high confidence that dense fog will redevelop each night and morning, continuing through the weekend and into next week, even after today’s advisory expires. While visibility may improve during afternoon hours, overnight conditions are expected to repeatedly deteriorate.
No precipitation is required for these fog events, as persistent moisture near the surface combined with light winds is allowing fog to reform consistently.
Commuters, early-morning workers, and commercial drivers should plan for extended travel times, particularly along State Route 99 and I-5, where traffic volumes are highest.
Residents are encouraged to monitor official updates from the National Weather Service in case the advisory is extended or expanded.
