From Toronto to Minneapolis, Chicago to Omaha many places in North America are seeing a surge in summer heat well into fall. But one of the drivers is a weather phenomenon occurring thousands of miles ...

A dangerous heat wave is building across Wisconsin and the Great Lakes this week, with temperatures climbing into the upper 80s and 90s — 20–25 degrees above normal. Much of the state normally expects ...

A record-setting marine heat wave stripped huge portions of Florida's coral reef of their colors in 2023, triggering the ninth and worst mass bleaching event in the Caribbean. Temperatures soared for ...

Australia has always had heat waves. But this week's heat wave in southeastern Australia is something else. Temperatures in some inland towns in South Australia, New South Wales and Victoria were up ...

Water temperatures several degrees above normal span thousands of miles, though they have mostly stopped short of the Pacific Northwest coast. Cool water welling up from the depths is thought to be ...

Millions of people in southeastern Australia are sweating through a record-breaking heat wave. The heat this week is likely to be one for the history books. The heat began on Saturday January 24th. On ...

Vast swaths of southeastern Australia are sweltering in a heat wave that’s pushed temperatures to close to 50 degrees Celsius (122 degrees Fahrenheit) and forced some residents to protect their ...

Waves from the Pacific Ocean break along the coast near the 60-ft high Victoria Beach Pirate Tower on a summer day on Sept. 19, 2025 in Laguna Beach, Calif. Waves from the Pacific Ocean break along ...