Massive Pile-Up on Highway 99 in California Due to Dense Fog

On January 31, 2026, a significant vehicle pile-up occurred on Highway 99 in Tulare County, California, involving 59 vehicles. The California Highway Patrol (CHP) reported that the incident took place shortly after 8:15 a.m. local time, with dense fog severely limiting visibility to between 100 and 200 feet. The crash resulted in the temporary closure of the highway in both directions and sent ten individuals to local hospitals with injuries ranging from minor to moderate.

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The pile-up was exacerbated by a prolonged period of dense tule fog, a phenomenon common in California's Central Valley during winter months. Meteorologists attributed the persistent fog to a stagnant high-pressure system that trapped cold, moisture-rich air near the ground, preventing the usual morning burn-off that typically clears fog. This season has seen a notable increase in fog-related accidents, with multiple incidents reported across the region.

Massive car pileup shuts Highway 99 near Earlimart amid dense tule fog

Emergency services received numerous calls about the collisions, which involved both northbound and southbound lanes near Avenue 24. The CHP and local fire departments worked to clear the wreckage, which included a mix of cars and large trucks. The highway was closed for over six hours, reopening around 2:30 p.m. local time. Fortunately, no fatalities were reported, although the CHP noted that some vehicles were severely damaged, with images showing wreckage strewn across the highway.

CHP: Several injured after 59 vehicles involved in Highway 99 crash near Earlimart

The CHP emphasized the dangers of driving in foggy conditions, urging motorists to slow down, increase following distances, and use low-beam headlights. They warned against relying on automatic headlights, which may not illuminate vehicles adequately in fog. The County of Tulare also echoed these safety messages, advising drivers to exercise caution and avoid travel during dense fog.

Massive car pileup shuts Highway 99 near Earlimart amid dense tule fog

Despite the CHP's efforts to clarify the situation, initial reports from the County of Tulare inaccurately estimated the number of vehicles involved as 150, which led to confusion. The CHP later confirmed the actual count was 59, highlighting the importance of accurate communication during emergencies.

59-vehicle crash forces temporary closure of Highway 99 in Central California, CHP says

This incident underscores the ongoing risks associated with driving in foggy conditions, particularly in areas like the Central Valley, where such weather phenomena are prevalent. The CHP has noted a pattern of accidents linked to sudden visibility drops, emphasizing the need for heightened awareness and safety measures among drivers.

9 Hospitalized After 'Extremely Dense Fog' Causes 43-Vehicle Pile-Up on California Highway

Authorities continue to monitor weather conditions and advise the public on safe driving practices during foggy weather. Investigations into the causes of the pile-up are ongoing, and further safety campaigns may be implemented to prevent similar incidents in the future.

Massive car pileup shuts Highway 99 near Earlimart amid dense tule fog

• “Drivers were hitting fog so thick they couldn’t see brake lights until it was too late,” — California Highway Patrol

Massive car pileup shuts Highway 99 near Earlimart amid dense tule fog

• “During dense fog avoid travel and DO NOT rely on automatic headlights.” — County of Tulare

150-vehicle pileup in dense fog shuts down Highway 99 between Bakersfield and Fresno

• “It’s the classic tule fog setup,” — NWS meteorologist Eric Kurth

Massive car pileup shuts Highway 99 near Earlimart amid dense tule fog

This incident serves as a reminder of the critical importance of road safety, particularly in adverse weather conditions.

9 Hospitalized After 'Extremely Dense Fog' Causes 43-Vehicle Pile-Up on California Highway