Sunday's soaring temperatures spurred Andrew Leonard to head out looking to purchase an air conditioner for his Chanate Road-area home, to no avail. Trips to several area big box retailers found them sold out, he said.

On his way back from his fruitless errand, Leonard said he drove past the unusual sight of a sidewalk apparently buckled upward by the heat. The combination of thin concrete and ineffective joints meant that when the material expanded, the sections of sidewalk pushed against one another and raised several inches off the ground, he said.

“I thought ‘This is amazing. This is crazy,’ ” he said.

The sidewalk has been reported to the city's Transportation and Public Works Department, according to a Santa Rosa Fire Department Facebook post.

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