At least five people died and 29 others were injured in a massive 30-car pileup on a Colorado highway caused by a blinding 'brown out' storm.
Dozens of sedans, SUVs, and commercial trucks slammed into each other around 10am on Tuesday on Interstate 25, just south of Pueblo.
Karen Marsh, 66, Mary Sue Thayer, 72, David Kirscht, 90, and Scott Kirscht, 64, a father and son, died in the crash, according to the Pueblo County Coroner's office.
The identity of the fifth victim has not yet been released, the Pueblo County Coroner's office told the Daily Mail. They died in the hospital on Wednesday morning.
The deadly crash, which involved 36 passenger vehicles and seven semi-trucks, is believed to have been caused by a severe dust storm brought on by 70pmh winds.
The storm, also referred to as a 'brown out,' creates a thick cloud of dirt that causes little to no visibility.
Blinding dust quickly took over the highway, leaving drivers stuck in dangerously fatal conditions.
'The dirt and everything just traversed all the way across I-25 and created just what I'll call as a dirt or a brown out,' Major Brian Lyons with the Colorado State Patrol (CSP) said. 'That visibility was next to nothing.'
A terrifying 30-car pileup left at least four dead and dozens injured on Tuesday morning just south of Pueblo, Colorado. A severe dust storm brought on by 70mph winds created little to no visibility for drivers.
Mary Sue Thayer (pictured with her husband Tom), 72, is one of the four victims who died in the pileup.
Karen Marsh, 66, also lost her life in the crash. She has been remembered as a loving hospice worker.
Dozens of others, including one person in critical condition, were transported to local hospitals. Seven people suffered serious injuries and 21 were treated for moderate to minor injuries, CSP said.
Just hours before the pileup, the CSP warned that the day would bring 'wild weather' due to powerful winds and heavy mountain snow rocking the state.
'Check the conditions before you head out and remember - two hands on the wheel with no distractions,' the agency said in a post on X.
A pickup truck pulling a trailer carrying 30 sheep and one goat was also involved in the collision.
Four of the sheep died as a result and the remaining animals were removed from the chaotic scene.
The Humane Society of the Pikes Peak Region shared photos of chaos and explained the animals got 'trapped inside the damaged trailer' while others were left, 'running loose along the interstate in immediate danger'.
The surviving farm animals were taken home 'in a trailer supplied by another community member,' the post read.
I-25 was closed in both directions after the pileup before reopening around 3pm, the Pueblo County Sheriff's Office said.
As the identities of the deceased were confirmed loved ones began paying heartbreaking tributes to the victims.
Marsh, of Pueblo, has been remembered as a 'dear friend' who worked for a local hospice center for several years, according to Jason Adamczyk.
'I worked with Karen for several years at Sangre De Cristo Hospice. We worked together as doubles seeing several hospice patients over the years and formed a very strong friendship,' he wrote on Facebook alongside a picture of him with Marsh, who he called 'Aunt Karen.'
Michelle Randall, another employee from the hospice center, shared a heartbreaking tribute for Marsh on Facebook.
'If you ever had the chance to meet Karen -- as a patient, coworker, or even just in passing -- you experienced her hugs, her radiant smile, and her infectious laughter,' Randall wrote.
'She showed up every single day for her patients and her team like a ray of sunshine.'
Thayer, of Rye, leaves behind her husband Tom and their children.
The Humane Society of the Pikes Peak Region shared photos of goats involved in the crash after the truck they were travelling in got caught up in the collision
Amber Shipley, a spokesperson for the Colorado Department of Transportation, reminded drivers that dust storms need to be taken just as seriously as blizzards
David and Scott Kirscht were from Walsenburg, Colorado. Their deaths come just months after Shawn Kirscht, their son and brother, died according to Shawn's obituary.
They are survived by their wife and mother, Laura Kirscht.
The investigation into the cause of the crash remains ongoing, and the victims' cause of death have not yet been released.
Amber Shipley, a spokesperson for the Colorado Department of Transportation, warned drivers that dust storms need to be taken just as seriously as blizzards.
Shipley told The Pueblo Chieftain that drivers should put their lights on, drive slowly, and use caution if they are ever caught in a 'brown out'.
The Daily Mail contacted the CSP and the Pueblo County Coroner's office for comment.