The Thunder Mountain Pro Rodeo originated as a PRCA rodeo in 1975 under the direction of rodeo committee members Mel Boultinghouse, Cal Christensen, Vern Eaton, Wayne Gossett, Bill Merz, George Moore, Les Nelson, and Jan Searing. The rodeo was originally called The Cowlitz County Fair & Rodeo, but after Mount Saint Helens spewed its fire and thunder upon this area in 1980, committeeman George Moore suggested in 1981 that the rodeo’s name be changed to The Thunder Mountain Pro Rodeo.     

Since 1981, the rodeo has been known by this memorable
name, which though was derived from a volcanic eruption, it also aptly denotes the thundering hooves and energy, which this rodeo brings to town.

When the rodeo began in 1975 we used a borrowed, portable arena that was erected just before the Cowlitz County Fair opened, and had to dismantle it after the fair ended. In 1979, we established a permanent arena. Although this arena was a vast improvement over a portable arena, we now have a state of the art arena, which we are proud to state was entirely constructed by committee members.

Our present committee is comprised of 12 committee members, whereas we had 8 committee members when the rodeo originated. Present committee members are Mel Boultinghouse, Kim Cooper, Bob Covington, Chuck Ellston, Ron McCoy, Bill Merz, Debby Merz, Mike Monroe, George Moore, Dan Ritchie, Roy Ritchie and Jan Searing.
 
Christensen Brothers was our original stock contractor. Flying Diamond Rodeo Company is our present stock contractor. We began with $300.00 per added event, and now we add $3,000.00 per event, including barrel racing.

Since this rodeo’s origination we have consistently drawn top cowboy and cowgirl contestants to the competition. The Thunder Mountain Pro Rodeo committee believes that the keys to success in having a great rodeo consist of having excellent stock, quality contestants, talented bullfighters, funny clowns, and exciting half-time entertainment. Each year we strive to make the rodeo the most successful rodeo competition we can bring to the Lower Columbia region. We hope that you have the opportunity to experience the Thunder Mountain Pro Rodeo!