Yellowstone star Cole Hauser has sent a heartfelt message to those hit by the catastrophic Texas floods.

The Lone Star State was battered by flash floods during the Fourth of July weekend, with over 100 lives tragically lost as the disaster enters its fifth day.

Kerr County has reported a staggering 84 fatalities, and Camp Mystic, a girls' summer camp, has sadly confirmed 27 girls and staff among the deceased, with 10 children and a counsellor still unaccounted for.

Following the calamity, Hauser, famed for his role as Rip Wheeler in Paramount's renowned series, took to Instagram alongside Free Rein Coffee Company, which he co-founded, to express his solidarity with the victims.

"Our hearts are with everyone impacted by the flooding in the hill country," began the emotional post, reports the Mirror US.

"To the first responders working around the clock, thank you. Your courage and commitment mean everything, especially in moments like this."

Hauser then announced that his company will be extending a helping hand by delivering coffee and supplies to Kerr County as a gesture of support.

"We're bringing coffee and supplies to Kerr County to support you in any small way we can," read the heartfelt announcement.

"If you're on the front lines and could use some, let us know in the comments."

Signing off with a note of encouragement, he wrote: "Stay safe, Texas. We're with you."

Hauser's touching words have sparked an outpouring of appreciation from his followers, many of whom reside in Texas or have relatives affected by the devastating floods.

One fan expressed their distress: "San Angelo we're a small community impacted. We weren't hit as hard as Kerr County but definitely devastating for the people who live here that lost everything."

Another responded with gratitude: "Thank you to all the first responders working so hard to save lives. Free Rein, you guys are something special for always doing your part."

An appreciative Texan remarked: "Thank you Cole. We Texans appreciate your generosity and kindness during this unimaginable loss and devastation."

A commenter shared a personal note: "My husband and I are from kerrville and I thank you for doing this.

"My FiL is on the water rescue and recovery team. They will be thankful for anything yall are bringing."

Lastly, an Instagram user acknowledged the support: "Thank you for your thoughtfulness. The families of Kerrville, and along the Texas Hill Country need all the love and prayers they get right now."

If you want to help those affected by the disaster, you can donate to the Kerr County Flood Relief Fund, which supports the relief and rebuilding efforts.

Additionally, the nonprofit first responder organization TEXSAR has asked for donations to help their relief efforts.