A devastating multi-vehicle accident occurred on Interstate 25 near Pueblo, Colorado, resulting in five fatalities. The crash, involving nearly 30 vehicles, was primarily attributed to a severe brownout condition that drastically reduced visibility. The sequence of events began when an SUV collided with a pickup truck towing a trailer, which was moving at a significantly reduced speed due to the brownout. This initial collision led to a series of subsequent crashes as drivers struggled to react in the near-zero visibility conditions.