GAINESVILLE, Ga. -

A number of variables contributed to price softening in the lanes last week, one of which was a curveball thrown from Mother Nature, herself.

Black Book’s Ricky Beggs pointed out in his latest “Beggs on the Used Car Market” report that vehicle damage from a group of storms — which produced tornadoes and hail that whipped past the Denver airport a few weeks ago and toward the auctions in Aurora, Colo. — had an impact on prices in the lanes last week.

“Well, this past week a significant number of the damaged cars from that day of storms made it to the local auctions,” said Beggs, editorial director and senior vice president at Black Book. “Even though the market activity was pretty solid, some of the values reflected the existing dings that covered many of the cars and trucks.”

Taking a look at auction price movement last week, the number of price changes sat at 1,318, the lowest number this month.

Of those changes, only 28 percent were increases — the lowest rate since the week ending Feb. 21.

That said, the car segments are performing a bit better, Beggs shared, with an average decline of $45, the smallest seen this month.

Though it continues to see better price retention than cars, the truck market has seen its weekly decline increase each week in June.

Last week, the average decline for trucks was $34. And for the first time in the last three month, full-size pickups did not increase in price, showing no change from rates seen two weeks ago.

Another trend pushing prices down at auction: expanding supply. Beggs said this trend is also allowing dealers to be a bit more selective at auction, perhaps pushing sales rates down right along with prices.

“Add in the traditional and expected seasonal summer softening and the comments such as ‘downtime in the business’ and the feeling that the buyers are in a ‘wait-and-see attitude’ goes right along with several reports that referenced that prices seem to be leveling off and adjusting down,” said Beggs.

To view the latest "Beggs on the Used Car Market" report, see the video above.