A mini heat wave is expected to bring triple digit temperatures to some parts of Southern California this week.

Southern California was feeling the effects of a mini heat wave, with temperatures expected to climb about 5 to 10 degrees above area norms Wednesday and Thursday. The heat spell was forecast to peak Wednesday and Thursday,

Big changes [are] coming ... as high pressure over Arizona expands west into Southern California,' the weather service warns.

New research finds that not only will climate change make heat waves hotter and longer, but the lengthening of heat waves will accelerate with each additional fraction of a degree of warming.

Summer is underway and WA residents are turning on the fan or air conditioning. But can utility companies cut power if the grid is strained?

Climate risk models, which are widely used in the insurance industry, can estimate the likelihood that fires or floods will affect a specific place in the U.S., even down to the address level.

French and Spanish firefighters battled blazes that burned through thousands of acres for a second day. The fires followed a heat wave that dried out the terrain, creating fuel for wildfires, according to weather agencies and experts.